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Check this out: 2001-2002 Model Year vehicles may be covered by Special Policy Number 04039. Please refer to Special Policy Number 04039 before submitting any warranty claims.

Have your dealer look this up. Here is a copy of it off of dieselplace.com. Be sure to read the statement in bold red underline. You might be able to get your $100 back if you wish to push the issue. This policy should still be current:

Special Policy Adjustment - Injectors-Replace #04039 - (May 26, 2004)
Special Policy Adjustment - Injector - Replace
2001-2002 Chevrolet Silverado

2001-2002 GMC Sierra

Equipped with 6.6L Duramax Diesel (RPO LB7 - VIN Code 1) Engine

Condition
Some customers of 2001-02 model year Chevrolet Silverado and GMC Sierra vehicles, equipped with a 6.6L Duramax Diesel (RPO LB7 - VIN Code 1) engine, may experience vehicle service engine soon (SES) light illumination, low engine power, hard start, and/or fuel in crankcase, requiring injector replacement, as a result of high fuel return rates due to fuel injector body cracks or ball seat erosion.

Special Policy Adjustment
This special policy covers the condition described above for a period of 7 years or 200,000 miles (320,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. The repairs will be made at no charge to the customer.


Important
This special policy only covers the above noted failure modes, which are identified by high fuel return flow.


For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after May 25, 2004, are covered by this special policy and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to May 25, 2004 must be submitted to the Service Contract provider.

Vehicles Involved
Involved are certain 2001-02 model year Chevrolet Silverado and GMC Sierra vehicles equipped with a 6.6L Duramax Diesel (RPO LB7 - VIN Code 1) engine and built within the following VIN breakpoints:

Year
Division
Model
From
Through

2001 Chevrolet Silverado
1E100028 1E346644
1F100001 1F213872
1Z100015 1Z100019

2001 GMC Sierra
1E100021 1E346642
1F1000101 1F213864

2002 Chevrolet Silverado
2E100009 2E306435
2F100004 2F247804

2002 GMC Sierra
2E100003 2E306345
2F100011 2F247974