GMC

Overhead Roof Console Inoperative / Service Safety Restraints Message / Sunroof Inoperative / Dome Lights Inoperative / DTCs B1A7A and U1121 – 2021 Chevrolet GMC

by
2021 Chevrolet Tahoe

NHTSA ID Number: 10204456 Manufacturer Communication Number: PIT5774D Summary This Preliminary information communicates an issue with: Overhead Console Inoperative / Service Safety Restraints Message / Sunroof Inoperative / DTC’s B1A7A and U1121.  Dealers are to cycle the power to the overhead console to correct the issue.  Engineering has released updated roof consoles to correct this concern.  Dealers are … Read more

Fleet Vehicle Aftermarket Calibrations Speed Limited to 70 mph Reduced Power With No MIL or Vibration At Idle – 2015-2021 Chevrolet Colorado & GMC Canyon

by
2021 Chevrolet Colorado

NHTSA ID Number: 10204457 Manufacturer Communication Number: PIP5830   Summary This Preliminary information communicates concerns created by an aftermarket ECM calibration installed by fleet companies.  The Fleet companies install aftermarket ECM calibrations to limit the vehicle speed to approximately 70 mph and reduce the over all power output. This calibration also reduces the engine idle speed and may induce a vibration … Read more

Poor Heater Performance On Drivers Side – 2019-2021 Cadillac Chevrolet GMC

by
2021 Chevrolet Suburban

NHTSA ID Number: 10204458 Manufacturer Communication Number: PIT5868   Summary This Preliminary information communicates an issues will low or poor heater performance on the drivers side.  Dealers are to inspect the HVAC temperature door linkage and if ok replace the heater core.     13 Affected Products Vehicles MAKE MODEL YEAR CADILLAC ESCALADE 2021 CADILLAC ESCALADE ESV … Read more

SES MIL / AC Blows Warm Air / Fuse F4DR Open / DTC B1AA3 U3018 U3505 – 2021-2022 Cadillac Chevrolet GMC

by
2022 Chevrolet Suburban

NHTSA ID Number: 10204460 Manufacturer Communication Number: PIT5869   Summary This Preliminary information communicates an issues with an SES MIL, A/C blowing warm air and DTC’s B1AA3 U3018 U3505 due to Fuse F4DR open.  Dealers are to inspect the wiring in the front floor console.     12 Affected Products Vehicles MAKE MODEL YEAR CADILLAC ESCALADE 2021-2022 CADILLAC … Read more

Tail Lights Remain On After Passive Locking and/or Dead Battery – 2022 Chevrolet GMC

by
2022 Chevrolet Silverado 1500

NHTSA ID Number: 10204464 Manufacturer Communication Number: PIT5849D   Summary This Preliminary information communicates an issue with the rear tail / parking lights staying on and do not time out after exiting the vehicle and passive locking the vehicle.  This condition can lead to a dead battery.  GM Engineering has released a fix and dealers are to reprogram the BCM … Read more