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Jerry
Jerry, Master Mechanic
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Experience:  ASE Master tech, 30 years experience GM certified
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2004 GMC Sierra 3500: fuel injectors..a Duramax 6.6 They..dealership

Resolved Question:

How often should fuel injectors be replaced on a 2004 GMC Sierra 3500 with a Duramax 6.6 They were orginally replaced at 50k miles under warranty now at 92k miles the dealership is telling me I have 3 bad ones?
Submitted: 4 years ago.
Category: GM
Expert:  Jerry replied 4 years ago.

Hello and welcome to Just answer.com, Super mechanic here. About your vehicle.

 

The injectors are not actually a part that is recommended to be replaced at any certain mileage or time, as a normal scheduled maintenence item. They are normally just replaced when they are bad.

 

However, being that it is under the 7 year, 200K mark, you may want to check for the campaign on them. Here is a TSB which explains it.

 

Campaign - Fuel Injector Warranty Extension
Notes
Subject: Special Coverage Adjustment - Injectors-Replace
# XXXXX - (11/19/2007)

 

Models:
2001-2004 Chevrolet Silverado
2001-2004 GMC Sierra
2004 Chevrolet Kodiak
2004 GMC TopKick

 

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

THIS BULLETIN IS BEING REVISED TO ADD 2004 MODEL YEAR TRUCKS. PLEASE DISCARD SPECIAL POLICY BULLETIN NUMBER 04039A, DATED OCTOBER, 2006.

Condition

Some customers of 2001-04 model year Chevrolet Silverado; GMC Sierra; 2003 Chevrolet Kodiak and GMC TopKick 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, ball seat erosion, or high pressure seal extrusion (refer to Corporate Bulletin Number 04-06-04-007G and SI).

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 models, which are identified by high fuel return flow.

 

For 2001-2002 vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or afier 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.

For 2003 vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after October 10, 2006 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 October 10, 2006 must be submitted to the Service Contract provider.

For 2004 vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after November 19, 2007 are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to November 19, 2007 must be submitted to the Service Contract provider.

 

Customer: replied 4 years ago.
Yes I knew about the Special Coverage Adjustment. I printed it and took it in with my vehicle. After they diagnosed that it was the injectors they looked it up and said my injector replacement was already performed under that Adjustment and I couldn't be covered under it again. Do I have any recourse?
Expert:  Jerry replied 4 years ago.
Yeah...the factory doesn't pay for anything to be done twice. However, you may want to try to talk with the factory rep on that. They can make some adjusments, but you never know, till ya try.
Jerry, Master Mechanic
Category: GM
Satisfied Customers: 12982
Experience: ASE Master tech, 30 years experience GM certified
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