2003

6.6L LBZ, LB7, LLY Duramax Diesel Engine Cylinder Head Gasket Design Change — New Head Gasket Part Numbers and Head Bolt Torque Specifications – 2001-2006 Chevrolet GMC

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2006 Chevrolet Silverado

NHTSA ID Number: 10019849 Manufacturer Communication Number: 060601006 Summary INFORMATION ON 2006 6.6 LBZ LLY DURAMAX DIESEL ENGINE CYLINDER HEAD GASKET CHANGE – NEW HEAD GASKET AND TORQUE SPECIFICATION. *TT   8 Affected Products Vehicles MAKE MODEL YEAR CHEVROLET C4500 2006 CHEVROLET C5500 2006 CHEVROLET EXPRESS 2006 CHEVROLET SILVERADO 2006 GMC C4500 2006 GMC C5500 2006 GMC … Read more

Information Regarding the Differences Between Fluid Leakage and Seepage – GM Passenger Cars and Trucks

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General Motors

NHTSA ID Number: 10222777 Manufacturer Communication Number: 15-00-89-004E Summary This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.   This bulletin is intended to help identify the differences between what is considered a fluid leak and what is considered seepage. … Read more

New Engine Coolant Fill Procedure – 2003 Chevrolet Express & GMC Savana

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2003 Chevrolet Express

58-562 and 55-13411 OVERHEATING AFTER WATER PUMP REPLACEMENT   Application: 2003 Chevrolet Express, 2003 GMC Savana with 4.8L, 5.3L or 6.0L Gen III V8 Engine (VIN’s V, T, U – RPO’s LR4, LM7, LQ4)   Problem: Major engine overheating after replacing water pump.   Cause: Because the engine cooling system no longer uses a pressurized … Read more

Information on Higher Than Expected Oil Consumption – 2001-2016 Chevrolet GMC with 6.6L Duramax

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2016 Chevrolet Silverado 3500

NHTSA ID Number: 10137617 Manufacturer Communication Number: 02-06-01-027D   Summary This informational bulletin provides information on higher then expected oil consumption.   Information on Engine Oil Consumption Guidelines for the 6.6L Duramax Diesel Engine All engines require oil to lubricate and protect the load bearing and internal moving parts from wear including cylinder walls, pistons and piston … Read more

General Motors Dealership Critical Equipment Requirements and Recommendations – GM Passenger Cars and Trucks

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NHTSA ID Number: 10220308 Manufacturer Communication Number: 05-00-89-029E Summary This service bulletin provides information on General Motors Dealership Critical Equipment Requirements and Recommendations.   Critical Equipment As established in the Dealer Sales and Service Agreement, in addition to required essential service tools, the dealer agrees to provide such other tools and equipment as reasonably necessary to fulfill … Read more