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Campaign - Engine Replacement: Overview

# 08328: Customer Satisfaction - 4.2L Inline 6 Cyl Engine - Cylinder Block Machined Incorrectly - Replace Engine
(Sep 23, 2008)

Subject:
08328 -- 4.2L Inline 6 Cyl Engine - Cylinder Block Machined Incorrectly - Replace Engine

Models:
2009 Chevrolet TrailBlazer
2009 GMC Envoy

Equipped with 4.2L Inline 6 Cylinder (RPO LL8 - VIN S) Engine

THIS PROGRAM IS IN EFFECT UNTIL MARCH 31, 2009.

Condition

Certain 2009 model year Chevrolet Trailblazer and GMC Envoy model vehicles, equipped with 4.2L inline 6 Cylinder (RPO LL8 - VIN S) engine, may have a condition in which the cylinder block bore chamfer on number one cylinder was machined too deeply such that the bore liner's top lip may be unsupported, leading to cracking of the bore liner. A cracked bore liner may lead to subsequent piston and engine damage. The customer would experience engine noise followed by engine failure.

Important:
This program will expire on March 31, 2009.

Correction

Dealers are to replace the engine.

Vehicles Involved





Involved are certain 2009 model year Chevrolet Trailblazer and GMC Envoy model vehicles equipped with a 4.2L inline 6 Cylinder (RPO LL8 - VIN S) engine and built within the VIN breakpoints shown above.

Important:
Dealers are to confirm vehicle eligibility prior to beginning repairs by using GM Vehicle Inquiry System (GMVIS). Not all vehicles within the above breakpoints may be involved.

For dealers with involved vehicles, a listing with involved vehicles containing the complete vehicle identification number, customer name, and address information has been prepared and will be provided through the applicable system listed below. Dealers will not have a report available if they have no involved vehicles currently assigned.

- US GM dealers - GM DealerWorld Recall Information

The listing may contain customer names and addresses obtained from Motor Vehicle Registration Records. The use of such motor vehicle registration data for any purpose other than follow-up necessary to complete this program is a violation of law in several states/provinces/countries. Accordingly, you are urged to limit the use of this report to the follow-up necessary to complete this program.





Parts Information

Service Procedure

1. Refer to SI for engine exchange procedure.

2. Contact the Product Quality Center (PQC) and request an engine. The full 17-character VIN, and the 08328 bulletin reference number will be required when ordering.

Caution:
To avoid spillage when removing from the shipping container, do not tilt the engine excessively. Do not destroy the container as it will be reused to ship the removed engine to the WPC. Check fluid levels after installation.

3. Refer to SI and replace the engine. The removed engine should be held until a Warranty Parts Center (WPC) request for return is received. DO NOT SHIP WITHOUT AN OFFICIAL WPC REQUEST.

4. After the engine is installed in the vehicle. The following service procedure should be used to test the engine:

4.1. Disable the ignition system.

4.2. Crank the engine several times. Listen for unusual noises or evidence that parts are binding.

4.3. Enable the ignition system.

4.4. Start the engine and listen for unusual noises.

4.5. Check the vehicle oil pressure gage or light and confirm that the engine has acceptable oil pressure.

4.6. Run the engine speed at about 1000 RPM until the engine has reached normal operating temperature.

4.7. Listen for a sticking lifter and other unusual noises.

4.8. Inspect for fuel, oil and/or coolant leaks while the engine is running.

4.9. Perform a final inspection for the proper engine oil and coolant levels.

5. Return the removed engine to the WPC following the procedures outlined in bulletin 99-00-89-019E, including the draining of fluids.

Courtesy Transportation

The General Motors Courtesy Transportation program is intended to minimize customer inconvenience when a vehicle requires a repair that is covered by the New Vehicle Limited Warranties. The availability of courtesy transportation to customers whose vehicles are within the warranty coverage period and involved in a product program is very important in maintaining customer satisfaction. Dealers are to ensure that these customers understand that shuttle service or some other form of courtesy transportation is available and will be provided at no charge. GM dealers should refer to the General Motors Service Policies and Procedures Manual for Courtesy Transportation guidelines.

Claim Information





Submit a Product Claim with the information shown above.

Customer Notification - For US

General Motors will notify customers of this program on their vehicle (see copy of customer letter shown in this bulletin).

Customer Notification - For Export

Letters will be sent to known owners of record located within areas covered by the US National Traffic and Motor Vehicle Safety Act. For owners outside these areas, dealers should notify customers using the sample letter.

Dealer Program Responsibility - All

All unsold new vehicles in dealers' possession and subject to this program must be held and inspected/repaired per the service procedure of this program bulletin before customers take possession of these vehicles.

Dealers are to service all vehicles subject to this program at no charge to customers, regardless of mileage, age of vehicle, or ownership, through March 31, 2009.

Customers who have recently purchased vehicles sold from your vehicle inventory, and for which there is no customer information indicated on the dealer listing, are to be contacted by the dealer. Arrangements are to be made to make the required correction according to the instructions contained in this bulletin. A copy of the customer letter is provided in this bulletin for your use in contacting customers. Program follow-up cards should not be used for this purpose, since the customer may not as yet have received the notification letter.

In summary, whenever a vehicle subject to this program enters your vehicle inventory, or is in your dealership for service through March 31, 2009, you must take the steps necessary to be sure the program correction has been made before selling or releasing the vehicle.





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