Sierra

Diagnosing High Speed LAN Concerns – 2007-2014 Cadillac Chevrolet GMC Hummer

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2014 Cadillac Escalade

NHTSA ID Number: 10114600 Manufacturer Communication Number: PIT4667D Summary This Preliminary Information communication advises the technician of additional steps for diagnosing General Motors high speed local area network. This should only be used if normal service information doesn’t lead to a diagnosis this is not a replacement for normal service information.   107 Affected Products Vehicles CADILLAC … Read more

Wax Coating on Frame Peeling, Metal Shows Corrosion/Rusting – 2011-2019 Cadillac Chevrolet GMC

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2019 Chevrolet Silverado

NHTSA ID Number: 10154649 Manufacturer Communication Number: PI0564K   Summary This preliminary informational bulletin provides frame coating repair information to correct a customer concern of wax coating on frame peeling, metal shows corrosion/rusting (U.S. and Canada Only).   111 Affected Products Vehicles CADILLAC ESCALADE 2011-2019 CADILLAC ESCALADE ESV 2011-2019 CADILLAC ESCALADE EXT 2011-2013 CHEVROLET AVALANCHE 2011-2013 CHEVROLET … Read more

15114 – MIL Lamp On / Glow Plug Heater Inoperative – 2010-2012 Chevrolet & GMC

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2012 Chevrolet Silverado

NHTSA ID Number: 10089893 Manufacturer Communication Number: 15114 Summary 15114 – SPECIAL COVERAGE. ON SOME 2010-2012 MODEL YEAR CHEVROLET SILVERADO HD AND GMC SIERRA HD OR 2011-2012 CHEVROLET EXPRESS AND GMC SIERRA HD VEHICLES EQUIPPED WITH A 6.6L DURAMAX DIESEL ENGINE (RPO LML, LGH) THE MALFUNCTION INDICATOR LAMP (MIL) MAY ILLUMINATE DUE TO A CONDITION WITH THE … Read more

Special Coverage Adjustment – Diesel-Emission- Reduction Fluid Tank – 2010-2012 Chevrolet & GMC

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2012 Chevrolet Silverado

NHTSA ID Number: 10130605 Manufacturer Communication Number: GCUS-9-2952   Summary 14652A-Special Coverage. On some vehicles 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. If this condition occurs within the stated terms, dealer will replace the DEF tank reservoir … Read more

Advanced Diagnostics – Proactive Alert – 2015-2016 Cadillac Chevrolet GMC

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2016 Chevrolet Corvette

NHTSA ID Number: 10112820 Manufacturer Communication Number: PI1250D Summary This preliminat informational bulletin provides information on the proactive alert advanced diagnostics. Proactive Alert monitors the Engine Cranking system and the Fuel Delivery system and if either one of these monitored systems triggers certain performance issues, specific Customer and Dealer Communication are sent.   14 Affected Products Vehicles … Read more