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TOPIC : Chevy Silverado

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Modifications Can Cause Problems

Some owners of 2007-2019 Chevy Silverado trucks may comment about unwanted Stability Activation and/or a Service Stability message.

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Modifications Can Cause Codes

Some owners of 2007-2019 Chevy Avalanche, Silverado, Suburban or Tahoe vehicles, GMC Sierra and Yukon vehicles and Cadillac Escalades may comment on unwanted Stability Activation and/or a Service Stability message.

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Mixed Up Coils?

Several GM vehicle models may feature two distinctively different-looking per-cylinder valve-cover-mounted ignition coils. This is due to a supplier difference and, according to GM, does not affect performance or serviceability.

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Dirty Diesel Deeds

Chevy and GMC vehicles equipped with LGH, LML, LUZ, LWN, L5P and LH7 diesel engines may exhibit excessive smoke at the tailpipe, with DTC P2002 set. This may be the result of a cracked or broken diesel particulate filter (DPF).

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Shifty Chevy

Some owners of 2011-2014 Chevy Silverado 2500/3500 trucks equipped with the Allison A1000 automatic transmission may experience a bump feeling and/or a clunk noise when shifting from drive to reverse. Harsh shifting into reverse may be involved as well.

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Dirty Steering Kills Hydro-Boost

This bulletin applies to 1998-2013 Chevy Silverado models equipped with the Hydro-Boost system. Customers may notice that the brake pedal will move down or self-apply during or near full-lock turns.

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GM SIR MIL

This bulletin applies to 2007-2013 Chevy Avalanche, Silverado, Suburban and Tahoe; Cadillac Escalade; and GMC Sierra and Yukon models. During a low battery/voltage condition, the Passenger Presence System (PPS) may set a B1325 and/or B1000 along with other faults that are caused by a low battery/voltage condition.

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Chevy Is Dead in its Tracks

This bulletin applies to 2007-2013 Chevrolet Silverado vehicles equipped with the Allison LCT1000 5-speed or 6-speed transmission, where the vehicle may not move in forward or reverse.

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Another Mystery Buzz

Some owners of 2007-2013 Chevy Avalanche, Silverado, Suburban and Tahoe models may complain about a buzz or rattle noise during light acceleration around 1,200-2,000 rpm. The noise may also sound like a squeak, creak or tap coming from behind the instrument panel. This could be caused by the fuel line or fuel line bracket above the transmission contacting the floor pan.

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DTC B0081 Diagnosis

This bulletin applies to 2009-2013 Chevy Avalanche, Silverado, Suburban and Tahoe and GMC Sierra and Yukon models. DTC B0081 can be set in the SDM (sensing diagnostic module) and PPS (passenger presence system).

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