DEF Heater Replacement

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****** PLEASE READ FOR GM DMAX OWNERS*************
Campaign - DEF System Components Warranty Extension
# 14652: Special Coverage Adjustment - Diesel-Emission- Reduction Fluid Tank - (Jul 7, 2015)
Subject: 14652 - Special Coverage Adjustment - Diesel-Emission-Reduction
Fluid Tank

Models: 2010-2012 Chevrolet Express
2011-2012 Chevrolet Silverado HD
2010-2012 GMC Savana
2011-2012 GMC Sierra HD
Equipped with 6.6L Diesel Engine (LML/LGH)


On some 2010-2012 model year Chevrolet Express and GMC Savana vehicles and 2011-2012 model year Chevrolet Silverado HD and GMC Sierra HD vehicles that are equipped with a 6.6L diesel engine (LML/LGH), a malfunction-indicator light (MIL) may illuminate due to an offset in the temperature sensor in the diesel-emission-reduction fluid (DEF) tank reservoir, increased tank-heater resistance, or reductant-system performance.

Special Coverage Adjustment

This special coverage covers the condition described above for a period of 10 years or 120,000 miles (193,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership.

Dealers are to replace the DEF tank reservoir and/or supply module pump. The repairs will be made at no charge to the customer.

For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after July 7, 2015, 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 July 7, 2015, must be submitted to the Service Contract provider.

* Service Call if your zip-code is not in the selector at this time we do not service your area. If you want to schedule a out of town service call three to four weeks is required for these bookings.