March & April 2014

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www.acdelcotechconnect.com, click the Newsletters link

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An engines cooling system is typically designed to remove approximately one-third of the heat produced by the burning of the air/fuel mixture during the combustion process. Moving hundreds of gallons of coolant through the cooling system is the job of the water pump. Eventually, the water pumps bearings and seal wear out, potentially causing a noise or coolant leak.

ACDelco water pumps are thoroughly pressure-tested to prevent leaks and feature high-quality bearings, heat-treated impellers and coated seals for long-lasting performance.

Leaking

Some leakage around the water pump weep hole is evidence of normal coolant weepage, which prevents coolant from accumulating around the bearing shaft seal. The water pump may have a res-ervoir that collects the coolant seeping from the seal and allows it to evaporate off. This is a normal condition. However, if there is a constant drip or stream out of the weep hole, especially under pres-sure, the seal may be worn and the water pump may need replacement.

Contamination and Corrosion

Water pumps also may fail due to con-tamination and corrosion caused by the lack of proper maintenance or servicing

Cool Tips on Water Pump Service and Installation . . . . . . . . . . . . . . . . . . . . . . . . 1

Reprogramming the Body Control Module . . . . . . . . . . . . . . . . . . . . . . . . . 3

New Pigtail Catalog Integrated into the ACDelco Illustrated Catalog . . . . . . . . . . . . . . 4

New Online Medium Duty and Heavy Duty Filter Catalog . . . . . . . . . . . . . . . . 4

Circuit Testing . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Electrical Diagnostic Test Probe and Terminal Removal Tools . . . . . . . . . . . . . . 6

Tech Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Training Update . . . . . . . . . . . . . . . . . . . . . . . . . 8

IN THIS ISSUE

on Water Pump Service and Installation

A. Bearing assembly; B. Seal

Coolant residue on the cover plate

Cool Tips

2 Volume 21, Number 2 (ST-PU-0002-14)

ACDelco TechConnect is published bi-monthly and online for technicians of Professional Service Center and Key Fleet accounts to provide timely service information, increase knowledge and improve the performance of the service center.ACDelco 360 represents our mission to look at our businesses at every possible angle to provide value and assistance to our distributors and their customers as well as offer a full circle of support with programs, tools, training and marketing focused on enhancing and growing our partnership successfully.

Publisher: Rick Balabon ACDelco E-mail / richard.balabon@gm.comEditor: Greg St. Aubin ACDelco E-mail / gregory.staubin@gm.com

Technical Editor:Mark Spencer E-mail /mspencer@gpstrategies.com

Production Manager:Marie Meredith

Desktop Publishing:5by5 Design LLC E-mail / dkelly@5by5dzign.com

Write to: * ACDelco TechConnect P.O. Box 500 Troy, MI 48007-0500

On the Web::To read or print recent issues of TechConnect: www.acdelcotechconnect.com,

click the Newsletters link.

ACDelco service tips are intended for use by professional technicians, not a do-it-yourselfer. They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained techni-cians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, it cannot be assumed that the information applies to all vehicles or that all vehicles will have that condition.All materials and programs described in this magazine are subject to change. Submission of materials implies the right to edit and publish. Inclusion in the publication is not necessarily an endorsement of the individual or the company.TechConnect is published for ACDelco by Sandy Group, Troy, MI.

2014 ACDelco. All rights reserved.

Cool Tips on Water Pumps continued from page 1

of the cooling system. Failure to flush the cooling system when the water pump or other system components are replaced can leave excessive contami-nation and lead to repeat failure.

Cavitation Damage

Cavitation is the process where a bubble in a liquid (usually caused by the pressure of the liquid falling below its vapor pressure) rapidly collapses, pro-ducing a shock wave. The shock wave is strong enough to cause damage. Possible cavitation is most likely at the impeller blade of a pump, where flow rates and turbulence may be high.

Cavitation can cause vibration and noise as well as pitting erosion and additional wear. The pitting accelerates the erosion because it increases the turbulence of the fluid flow, which cre-ates more cavitation and, eventually, may lead to pump failure.

Service Tips

When replacing a water pump, there are several key items to keep in mind in order to complete a successful repair and eliminate a comeback.

Determine the root cause of failure, especially if the water pump failed prematurely

Flush the cooling system completely

Use the recommended 50/50 coolant/water mix

Do not use any non-approved flush agents

Follow the installation instructions that are included with the water pump

Use sealant tabs only if recom-mended. Some sealant tabs or sim-ilar compounds may restrict coolant flow through the passages of some cooling systems.

Engine Coolant

Quality coolant and water are critical to water pump operation. Contaminated coolant, depleted coolant, and poor water quality can result in corrosion and seal damage. Water quality varies great-ly in different areas. Unclean water also leaves mineral deposits in the cooling system, which can reduce coolant flow.

Engine coolants come in various colors and formulations, ranging from conventional green coolants to a variety of long-life coolants that may be orange, red, gold or blue. The color is mainly a dye, but the chemistry of the coolants is different.

Vehicle manufacturers have different coolant requirements and there may be some confusion over which type of coolant to use in a vehicle. Check the manufacturers service information for the correct coolant for the vehicle being serviced. Most manufacturers do not recommend mixing long-life coolant and conventional coolant.

When replacing a water pump, its critical to flush the cooling system. Prior to performing the flush procedure, remove, clean and reinstall the cool-ant recovery reservoir. To flush the system, use power flush equipment or thermal cycle the system with clean water three times. The most effective method of flushing the cooling system is to use a coolant exchanger. Follow the manufacturer's operating instruc-tions. A coolant exchanger can replace virtually all of the old coolant with new coolant without spillage and offers easy waste collection.

Water Pump Installation

When installing a water pump, along with flushing the cooling system and replacing the coolant according to man-ufacturers specifications, here are a few additional tips that can help ensure a proper repair:

Internal pump corrosion

Damage from cavitation

continued on page 3

3 Clean all sealing surfaces.

Never strike the water pump shaft. This will cause damage to the new water pump.

Tighten and torque all bolts according to the manufacturers specifications.

Adjust belts to proper tension (if applicable) to manufacturers specifications.

With the new water pump installed, turn the hub by hand and check for rotation.

After installation, pressure-test the system for leaks and check for sufficient fan blade clearance between the blade and radiator shroud.

Check Related Components

There are several other components that should be inspected when replac-ing the water pump. These include:

Fan blades Check for cracks, bends, breaks, loose rivets or damage. Also make sure the fan blade does not have any run-out.

Fan clutch (if applicable) Check for any loss of silicone, too much play or damage.

Engine mounts Check for worn or broken engine mounts and replace if necessary.

Radiator Inspect for any damage to the radiator, including the radiator shroud and mounts. Pressure test the radiator cap for proper holding pressure and inspect the thermostat and thermostat housing; replace if necessary.

Belts and hoses Check belts for any glazing, cracking or damage and replace if necessary. Check the belt tensioner (if applicable) and the pul-leys. Also check the cooling system hoses for damage.

Reservoir Check the overflow reservoir for cracks or damage. Thanks to Peter Robert

Cool Tips on Water Pumps continued from page 2

Reprogramming the Body Control Module

If diagnosis for a repair calls for replacing the Body Control Module (BCM) on a 2005-2006 Chevrolet Equinox or 2006 Pontiac Torrent, there are several steps that should be taken to ensure the new BCM is programmed correctly.

Do not remove the malfunctioning BCM from the vehicle until instructed to do so in the reprogramming procedure. If the new BCM is installed and information is requested from the new BCM, the BCM may need to be replaced again.

Due to the time requirements of programming a control module, it is recommended that an external power source be used to maintain system voltage, such as a fully charged 12V jumper or booster pack disconnected from the AC voltage supply or a Midtronics PSC charger. Stable battery voltage is critical during programming. Any fluctuation, spiking, overvolt-age or loss of voltage will interrupt programming. Battery voltage should be greater than 12 volts but less than 16 volts. Turn off or disable any system that may put a load on the vehicles battery, such as the automat-ic headlamps, interior lights, Daytime Running Lamps (DRL) (applying the parking brake before turning on the ignition will disable the DRLs), HVAC systems, and the radio.

Securely connect the scan tool and CANdi module to the vehicle, and connect the RS-232 cable from the PC to the scan tool.

In the Techline Information System (TIS) programming, select J2534 Tech 2 as the diagnostic tool and Reprogram ECU as the program-ming process. Do not select Replace and Program as the programming process.

Build the vehicle in TIS and select BCM and Normal programming.

Make sure not to install the new BCM until prompted to by the TIS programming procedure. When prompted to install the new BCM, do not disconnect the scan tool or disturb the tool harnesses. If an interruption occurs during the programming procedure, programming failure or control module damage may occur.

Check that all the options for the BCM are correct, such as ABS, 2WD or AWD, cruise control, fog lamps, etc.

Also check that the mileage and Sensing Diagnostic Module (SDM) part numbers are correct. The SDM part number should end in the following number:

2005 model year 3328 without RPO ASF (Inflatable Restraint Roof Side) or 3329 with RPO ASF.

2006 model year 1065 without RPO ASF or 1066 with RPO ASF.

The mileage displayed on the PC should be correct. The mileage may have to be manually entered if there was no communication with the original BCM or it was not available).

Click OK to accept the original BCM information. Next, click OK again to confirm all the BCM information or click Change if something is not cor-rect and needs to be updated.

At this point, BCM programming will begin. Do not turn off the ignition if the programming procedure is interrupted or unsuccessful. Ensure that all control module and Data Link Connector (DLC) connections are secure and the TIS terminal operating software is up to date. Attempt to reprogram the control module. If the control module cannot be programmed, replace the control module.

After BCM programming and setup, program the Theft Deterrent System and the key fobs. Thanks to Todd Merkle

4New Pigtail Catalog Integrated into the ACDelco Illustrated Catalog

A new Wiring, Pigtail and Sockets Catalog is available in WIP, ACDelcos online parts catalog and ordering applica-tion. This new catalog is integrated into the innovative ACDelco Illustrated Catalog that contains replacement components for General Motors vehicles from the current model year back to 1992.

The Pigtail Catalog has easy search functions: part number for pigtails and sockets, number of cavities and gender for pigtails, as well as a separate search for wiring sockets. The catalog also features high quality images that can be enlarged to show more detail.

Specialty Catalogs

To access the Pigtail Catalog or other ACDelco Specialty Catalogs, open the Illustrated Catalog, and then hover over the green Show Catalogs button at the bottom of the screen.

ACDelco has integrated the shopping cart throughout the Specialty Catalogs to simplify parts ordering. Click the shopping cart to add parts, and then click the Submit button to update the WIP order screen.

The user-friendly ACDelco Illustrated Catalog significantly streamlines lookups through advanced, interactive displays of vehicle systems and corresponding parts. The displays are integrated with the users inventory for immediate identification of available parts and corresponding prices.

WIP

ACDelco WIP connects independent service centers (ISCs) directly to their ACDelco supplier, displaying the availability and price of parts while allowing parts ordering at any time. WIP is web-based so there is no hardware or software to install.

To learn more about ACDelco WIP and the Illustrated Catalog, contact your local ACDelco Warehouse Distributor. Thanks to Kim LaClear

The Pigtail Catalog features easy-to-view high quality images.

ACDelco has introduced a new online Medium Duty (MD)/Heavy Duty (HD) Filter Catalog. The online catalog includes filter applications in the Heavy Duty, Industrial, Off-Road and Marine segments.

The new catalog is accessible through ACDelco WIP or at www.showmetheparts.com/ACDelco.

As with ACDelcos other online catalogs, the Filter Catalog contains tools to help users select the correct filter. The Part Detail guide pro-vides filter measurements, including inside and outside diameter, and filter height, shown in standard and metric measurements. The catalog also contains make and model fitment information in the Buyers Guide.

Currently, the catalog is not integrated into the WIP application. Users can locate the appropriate part numbers in the MD/HD Filter Catalog and then return to ACDelco WIP for pricing, availability, and ordering.

A link to the MD/HD Filter Catalog along with the other ACDelco Specialty Catalogs, such as the ACDelco Illustrated Catalog and newly integrated ACDelco Pigtail Catalog, is available in WIP. Look for a new online ACDelco Battery Information Center coming soon. Thanks to Kim LaClear

New Online Medium Duty and Heavy Duty Filter Catalog

The MD/HD Filter Catalog offers filters for a variety of applications.

5Most circuit testing requires the use of a Digital Multimeter (DMM), such as testing for continuity, short to ground, short to voltage, and intermittents. Other tests require use of a non-self-powered test lamp. Before testing a circuit, always connect the test lamp to the vehicle's battery positive and negative terminals to check the test lamp bulb.

To take a meter reading at a terminal, use the properly sized test probe. Do not insert DMM test probes into any connector or fuse block terminal. The diameter of the test probes may deform the terminals, possibly causing a poor connection.

TESTING FOR CONTINUITY

Using a Digital Multimeter

1. Set the DMM to the OHM position (typically indicated by the Greek symbol ).

2. Disconnect the power feed (i.e., fuse, control module) from the suspect circuit.

3. Disconnect the load.

4. Select the MIN MAX function on the DMM.

5. Connect one lead of the DMM to one end of the circuit to be tested.

6. Connect the other lead of the DMM to the other end of the circuit.

7. If the DMM displays low or no resistance, the circuit has good continuity.

Using a Test Lamp

Use the test lamp procedure only on low impedance power and ground circuits.

1. Remove the power feed (i.e., fuse, control module) from the suspect circuit.

2. Disconnect the load.

3. Connect one lead of the test lamp to one end of the circuit to be tested.

4. Connect the other lead of the test lamp to battery positive voltage.

5. Connect the other end of the circuit to ground.

6. If the test lamp illuminates (full intensity), the circuit has good continuity.

TESTING FOR SHORT TO GROUND

Using a Digital Multimeter

1. Remove the power feed (i.e. fuse, control module) from the suspect circuit.

2. Disconnect the load.

3. Set the rotary dial of the DMM to the position.

4. Connect one lead of the DMM to one end of the circuit to be tested.

5. Connect the other lead of the DMM to a good ground.

6. The DMM should display infinite resistance (OL). If the DMM does not display infinite resistance, there is a short to ground in the circuit.

Using a Test Lamp

1. Remove the power feed (i.e. fuse, control module) from the suspect circuit.

2. Disconnect the load.

3. Connect one lead of the test lamp to battery positive voltage.

4. Connect the other lead of the test lamp to one end of the circuit to be tested.

5. If the test lamp illuminates, there is a short to ground in the circuit.

Fuse Powering Several Loads

Review the system schematic and locate the fuse that is open (blown). Open the first connector or switch lead-ing from the fuse to each load. Connect a DMM across the open fuse terminals (be sure that the fuse is powered).

When the DMM displays voltage, the short is in the wiring leading to the first connector or switch.

If the DMM does not display voltage, perform the next step.

Close each connector or switch until the DMM displays voltage in order to find which circuit is shorted.

TESTING FOR SHORT TO VOLTAGE

1. Remove the power feed (i.e. fuse, control module) from the suspect circuit.

2. Disconnect the load.

3. Set the DMM to the V (DC) position.

4. Connect the positive lead of the DMM to one end of the circuit to be tested.

5. Connect the negative lead of the DMM to a good ground.

6. Turn on the ignition and operate all accessories.

7. If the voltage measured is greater than 1V, there is a short to voltage in the circuit.

TESTING FOR INTERMITTENTS

If the fault is not identified by test-ing for continuity, short to ground, and short to voltage, perform the following procedure using the MIN MAX feature on the Digital Multimeter.

This feature allows you to manipulate the circuit without having to watch the DMM. The DMM will generate an audi-ble tone when a change is detected. The DMM can monitor current, resis-tance or voltage while recording the minimum (MIN) and maximum (MAX) values measured.

1. Connect the DMM to both sides of a suspected connector (still connect-ed), or from one end of a suspected circuit to the other.

2. Set the DMM to the V (AC) or V (DC) position, whichever is appropriate.

3. Select the voltage range feature of the DMM in order to select the desired voltage range. The 100 ms Record mode is the length of time an input must stay at a new value in order to record the full change.

4. Select the MIN MAX function of the DMM. The DMM displays the 100 ms Record and emits an audi-ble tone.

5. Simulate the condition that is poten-tially causing the intermittent con-nection, either by wiggling the con-nections or the wiring, test driving, or performing other operations.

6. Listen for the audible MIN MAX alert that indicates a new minimum or maximum value has been recorded.

7. Press the MIN MAX button until the MAX value is displayed and note the value.

8. Press the MIN MAX button until the MIN value is displayed and note the value.

9. Determine the difference between the MIN and MAX values.

If the variation between the recorded MIN and MAX voltage values is 1V or greater, an intermittent open or high resistance condition exists. Repair the condition as necessary. Thanks to Todd Merkle

Circuit Testing

6Professional Service Center

Electrical Diagnostic Test Probe and Terminal Removal Tools

Electrical terminals are critical to the operation of all electrical circuits. Terminals are quite reliable. But, because they are small, precision-made components, terminals may be dam-aged by improper assembly and disas-sembly, improper testing, corrosion or use of improper service tools. If a termi-nal becomes damaged, it may have to be replaced.

Bosch Automotive Service Solutions is currently offering two GM-approved test probe and terminal removal (pick) kits containing only the most frequently used tools for a limited time.

Terminal Test Probes

When testing an electrical terminal, insert a test probe into the terminal; then touch the Digital Multimeter (DMM) probe to the open back side of the test probe.

Never touch the probes of a DMM to a terminal, either in an electrical harness or on a component, as the mating surfaces of the terminal could be deformed or otherwise damaged. This could result in poor retention or a poor electrical connection.

Test probes are made in a variety of sizes, both male and female. Mating terminal probes are color coded for quick identification.

To test an electrical circuit that is car-rying current, unplug the connector, and then insert matching male and female test probes into the corresponding cir-cuit terminals. Join the test probes with the appropriate jumper cable to com-plete the circuit. Then perform the test by applying the DMM probe to the back side of the test probe.

Terminal Removal Tools (Picks)

When it is necessary to remove an electrical terminal from a connector, use the appropriate terminal removal tool, or pick.

A small lock tang retains the terminal in the matching connector by engaging a lock shoulder in the connector. It is necessary to depress the lock tang to slide the terminal out. There is a canal in the connector to permit installing the appropriate terminal removal tool to depress the lock tang.

Many connector pairs use a Connector Position Assurance lock (CPA) to ensure that the connector halves remain together. A CPA cannot be installed until the connector halves are properly mated. Once the CPA is installed, the connector halves can-not be disassembled until the CPA is removed.

Many terminals also use a Terminal Position Assurance lock (TPA) to ensure that the terminal remains installed into the connector.

Terminal Test Probe Kit and Terminal Removal Tool Kit Offers

EL-35616-300 Terminal Test Probe Kit

Price: $73.35 (USD)

Bosch terminal probes are the tools of choice for wiring and electronic component diagnosis. They are GM approved and engineered to support proper diagnosis and will not damage terminals or harnesses. The EL-35616-300 Probe Kit includes only the most popular probes and components that are required to service 8090% of cur-rent GM vehicles globally. It is a less expensive option than the complete J-35616-F kit.

The kit includes:

963716-2-PKG Micro 0.64 Terminal Test Lead Package

J-35616-64B Blue Male Micro 0.64

J-35616-65B Blue Female Micro 0.64

J-35616-35 Purple

J-35616-14 Green

J-35616-16 Light Green

J-35616-2A Gray

J-35616-4A Pink

J-35616-20W White Jumper Cable

J-35616-20G Green Jumper Cable

Storage Pouch

EL-38125-300 Terminal Removal Tool Kit

Price: $98.60 (USD)

Bosch terminal picks (removal tools) are the only GM-approved products to remove terminals from connector bod-ies. Engineered to GM specifications, these tools will not damage terminals or harnesses during service. Other terminal removal devices and methods that do not meet GM-approved specifi-cations may cause damage to terminals and wiring harnesses. The EL-38125 Pick Kit contains only the most popular tools that are required to service the majority of current GM vehicles globally.

The kit includes:

J-38125-11A Dark Blue

J-38125-12A Light Transparent Green

J-38125-21 Red Delphi Micro 0.64

J-38125-553 Black Chisel Point

J-38125-216 Brown

J-38125-215A Purple

J-38125-213 Gray Micro 0.64

J-38125-561 White

Storage Pouch

To order either kit, call 1-800-GM-TOOLS or visit gmspecial- servicetools.service-solutions.com. Thanks to Jill Brown

EL-35616-300 Terminal Test Probe Kit

EL-38125-300 Terminal Removal Tool Kit

DTC P0300 Setting after Engine Repairs

2004-2007 Buick Rainier; 2008-2009 Buick LaCrosse; 2006-2013 Cadillac CTS-V; 2002-2013 Cadillac Escalade; 2010-2013 Chevrolet Camaro; 2011-2013 Chevrolet Caprice PPV; 2002-2013 Chevrolet Avalanche; 1999-2013 Chevrolet Express, Silverado, Suburban, Tahoe, and GMC Savana, Sierra, Yukon; 2002-2014 Chevrolet Silverado HD and GMC Sierra HD; 2009-2013 Chevrolet Colorado and GMC Canyon; 2003-2009 Chevrolet Trailblazer and GMC Envoy; 2006-2009 Chevrolet Impala SS; 2006-2007 Chevrolet Monte Carlo SS; 2003-2006 Chevrolet SSR; 2005-2013 Chevrolet Corvette; 2003-2010 Hummer H2; 2008-2010 Hummer H3; 2008-2010 Pontiac G8; 2005-2006 Pontiac GTO; 2005-2008 Pontiac Grand Prix GXP; 2005-2009 Saab 97X; equipped with a V8 engine

DTC P0300 (Engine Misfire Detected) may set after performing engine repairs on these models equipped with a V8 engine. It is possible to have the fuel injector electrical connectors crossed for cylinders 5-7 and 6-8, which may cause an engine misfire. The engine misfire may not be detected and may happen during deceleration.

If crossed injector connectors may be a possible cause, follow the appropriate Service Information to validate the injec-tor connector routing and correct the routing if necessary.

Tire Pressure Monitor System TipsTPMS Low Tire Light

If the Tire Pressure Monitor System (TPMS) low tire light on the instrument panel is illuminated, it could be due to low tire pressure or the result of a TPMS malfunction.

If the low tire light illuminates and stays on solid, tire air pressure is low. Properly adjust all tire air pres-sures to the recommended levels.

If the low tire light illuminates for a few minutes when the vehicle is started and then goes off after driving, the tire air pressure is likely low in one or more of the tires.

After driving awhile, the tires will heat up, allowing air pressure to increase above the threshold and causing the light to go off. Properly adjust all tire pressures to the rec-ommended levels.

If the low tire light flashes for one minute and then stays on solid, a TPMS system condition exists. The vehicle will require further diagno-sis.

Dashes Indicate System Malfunction

If dashes (- - -) are displayed in only one or two of the tire pressure read-outs, it is likely caused by a previous TPMS relearn that was performed incorrectly due to interference from another vehicles TPMS during the relearn process. Each tire monitor sensor is learned to a specific vehicle corner. When performing a TPMS relearn (only after a tire rotation or replacement of a TPMS sensor or module), use a scan tool or a tool such as the J-46079 TPMS Tester or the EL-50448 TPMS Activation Tool to initi-ate the relearn process and lock out other vehicle TPMS signals that may be broadcasting in the area. This method avoids storing false TPMS I.D.s. Check the four TPMS I.D.s with a scan tool prior to and following the relearn proce-dure to verify they are the same.

If dashes (- - -) are displayed in all four of the tire pressure readouts, there is a system condition. The vehicle will require further diagnosis.

Timing High-Feature V6 Engines

2013-2014 Cadillac ATS, XTS; 2012-2014 Chevrolet Impala; 2012-2013 Chevrolet Caprice; 2010-2014 Chevrolet Camaro, GMC Terrain; 2009-2014 Chevrolet Traverse; 2008-2014 Buick Enclave, Chevrolet Equinox; 2008-2012 Chevrolet Malibu; 2008-2010 Saturn Vue; 2008-2009 Pontiac Torrent; 2007-2014 Cadillac CTS and SRX, GMC Acadia, and Buick LaCrosse; 2007-2011 Cadillac STS; 2007-2010 Saturn Outlook; 2007-2009 Pontiac G6, Saturn Aura; equipped with the high feature 3.6L V6 engine (RPO LY7, LLT, LFX, LF3), 2.8L V6 engine (RPO LP1) or 3.0L V6 engine (RPO LF1, LFW)

Before beginning the timing proce-dure, keep these items in mind:

In a front-wheel-drive vehicle, it may be easier to remove the engine before beginning.

When removing the front cover, be sure to remove the belt tensioner and all the bolts; otherwise, dam-age may occur to the block.

When removing the front cover, do not pry against or strike the cam actuators. This will cause damage to the reluctor or actuator.

Intake cam actuators have marks on them for the Right Bank (R) and the Left Bank (L). They must be positioned respectively.

Be sure to note the orientation of the injector wiring harness. The harness with connector should come out on the front side of the engine. If installed backward, it will cause misfires and/or fuel trim DTCs.

4-screw Delphi cam actuators and 5-screw Aisin cam actuators are interchangeable, but require the correct shim behind them when applicable. 4-screw Delphi actua-tors use a 0.043-in. shim and the 5-screw Aisin actuators use a 0.063-in. shim.

7

The following technical tips provide repair information about specific conditions on a variety of vehicles. If you have a tough or unusual service repair, the Diagnostic Hotline can help. Call 1-800-825-5886, prompt #2, from 8 a.m. to 8 p.m. ET MondayFriday, to speak with a technical expert with the latest OEM information.

TechTips

Product InformationFor free technical assistance and product

information regarding specific ACDelco products, contact these toll-free information hotlines staffed by ASE-certified technicians:

Brakes 1-888-701-6169 (prompt #1)

Chassis and ReadyStruts 1-800-270-2124

Clutches 1-888-725-8625

Lift Supports 1-800-790-5438

Shocks 1-877-466-7752

Starters and Alternators (New) 1-800-854-0076

Starters and Alternators (Reman) 1-800-228-9672

Steering 1-855-451-1212

Wiper Blades 1-800-810-7096

ST-PU-0002-14 8

TrainingUpdate

Course Number Course NameS-AC07-02.01ILT Automotive Air Conditioning Advanced Refrigerant System DiagnosticsS-AC07-03.01ILT HVAC Control System Operation and DiagnosticsS-BK05-01.01ILT Braking SystemsS-BK05-03.01ILT Electronic Brake and Chassis Controls: Is the vehicle really smarter than the driver?S-DS11-13.01ILT Vehicle Network Communications: When modules talk, who is really listening?S-EL06-10.02ILT Electrical Power ManagementS-EL06-11.02ILT Enhanced Automotive Circuit DiagnosisS-EL06-13.01ILT Body Electrical Global DiagnosticsS-EL06-14.01ILT Advanced Body Control System Electrical DiagnosticsS-EP08-04.01ILT Engine Performance Fault Monitoring and Emission System DiagnosticsS-EP08-05.01ILT Engine Performance Advanced Drivability DiagnosticsS-EP08-06.01ILT After Combustion Sensors: Is what is in the exhaust making your engine run rough?S-EP08-07.01ILT Air Induction and Fuel Injection SystemsS-EP08-08.02ILT Evaporative Emissions Controls: Why is there always a code but never a leak we can find?S-EP08-09.01ILT Spark Generation: Is a lack of spark sending you up in flames?S-EP08-81.02ILT Duramax Diesel Operation and Diagnosis

Thanks to Greg St. Aubin

How to Take ACDelco Training

Training Spotlight

Advanced Technology Vehicle Transmission 2 (S-EL06-59.01WBT)

This WBT course covers the 1ET35 transmission charac-teristics, components, modes of operation, and service tips, including transmission cooling and fluid type. Mechanical and electrical components are covered as well as drive, reverse, and regenerative braking modes of operation. Service tips include the fluid filling procedure and transmission disassem-bly. The 1ET35 transmission is first used in the 2014 Chevrolet Spark EV.

Battery Electric Vehicle Introduction (S-EL06-60.01WBT)

This WBT course provides an introduction to the Battery Electric Vehicle (BEV), covering key features, characteristics and components of high voltage vehicle systems and support-

ing systems. High voltage vehicle systems covered include the propulsion system, thermal management system, and the charging system. Supporting systems covered include the climate control system, electrical and vehicle communication systems, braking system, and the steering system. Modes of operation, the diagnostic process, the high voltage disabling procedure and safe work practices also are reviewed.

High Voltage Energy Storage Systems 2 (S-EL06-61.01WBT)

This WBT course covers the Battery Electric Vehicle (Spark EV) high voltage energy storage system. It covers character-istics and failure modes of the drive motor battery, as well as special tools required to diagnose and service the drive motor battery. It also reviews characteristics of the lithium-ion bat-tery modules and battery control systems along with operation of the contactors. The thermal management system, including its characteristics, components, and operation, also is covered.

Go to www.acdelcotechconnect.com and click the Training tab to log in to the ACDelco Learning Management System (LMS).

To launch or enroll in courses in your training path, open the home page to view your Training Progress Status Report, select Show Detail, and then click the course number and title to view details on a specific course and to launch or enroll in the course.

To enroll in an Instructor-Led Training (ILT) course (ILTs are full-day hands-on classroom courses), click Take Training > Catalog > Catalog Search and select Instructor-Led Training under Delivery Type.

To launch a Web-Based Training (WBT) course (WBTs are 1- to 4-hour self-guided online courses), click Take Training > Catalog > Catalog Search and select Service or Business Web-Based Training under Delivery Type.

To launch a TechAssist (TAS) course (TAS courses are 15- to 20-minute online presentations on a specific topic), click Take Training > Catalog > Catalog Search and select TechAssist under Delivery Type.

To launch a Simulation (SIM) (SIMs require users to complete all repairs for a condition), click Take Training > Catalog > Catalog Search and select Simulation under Delivery Type.