This bulletin applies to 2009-2019 Chevy Suburban vehicles. A high-pitched whine or buzz noise may be heard with the key on and engine off, or for up to one minute after the engine has been shut off.
This bulletin applies to 2002-2018 Chevy Escalade, Avalanche, Express, Silverado, Tahoe and Suburban models, Cadillac Escalade, Hummer H and GMC Savana, Sierra and Yukon models.
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.
Some 2017 Cadillac Escalade vehicles (in addition to Chevy Suburban and Tahoe and GMC Yukon) may have been assembled with the wrong fasteners retaining the brake master cylinder to the brake vacuum booster.
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.
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.
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.
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).
This bulletin applies to 2009-2013 Chevy Avalanche, Silverado, Suburban and Tahoe models. DTC B0081 may be set in the SDM (Sensing Diagnostic Module) and PPS (Passenger Presence System). In most cases, the DTC will set due to a communication fault and does not always require a module replacement.
Some customers may comment on a fluid leak under the front of the GM vehicle. The technician may find fluid leaking from the power steering system.
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