Diagnostic Tips

Unable to Change Camera View, Stuck in Rear Camera View or Video Processing Module (VPM) Not Responding – 2020 Cadillac CT5

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2020 Cadillac CT5

NHTSA ID Number: 10199246 Manufacturer Communication Number: 20NA106   Summary This service bulletin provides repair information to correct a customer concern of Unable to Change Camera View, Stuck in Rear Camera View, or Video Processing Module (VPM) not Responding.     1 Affected Product Vehicle MAKE MODEL YEAR CADILLAC CT5 2020   Condition Some customers may comment … Read more

2.5L LCV 6L50 MYB Rough Idle Or Vibration While In Gear After A Cold Start 800 to 1000 RPM And Or A Short Vibration At A Launch – 2019-2021 Chevrolet Colorado & GMC Canyon

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2021 Chevrolet Colorado

NHTSA ID Number: 10193431 Manufacturer Communication Number: PIP5743A   Summary This Preliminary information communicates to the dealer technician diagnostic tips for a vibration concern at low engine speeds. If using these diagnostics shows root cause of the vibration to be the transmission torque converter the torque converter should be replaced.     6 Affected Products Vehicles MAKE MODEL … Read more

Intermittent Malfunction Indicator Lamp (MIL) Illuminated – DTC P146F Set – 2020-2021 Buick Encore GX & 2021 Chevrolet Trailblazer

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2021 Chevrolet Trailblazer

NHTSA ID Number: 10193432 Manufacturer Communication Number: PIT5831 Summary This Preliminary information communicates to dealer that if a P146F is setting intermittently that engineering is working on a calibration and no repairs are to be competed at this time.   Condition Some customers may comment that the MIL is illuminated. Upon a GDS2 scan check DTC P146F … Read more

No Start Or Unable To Perform Theft Relearn After Replacing Or Programming A Module / DTC U1962 – 2020-2023 Buick Cadillac Chevrolet GMC

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Chevrolet Buick GMC Cadillac

NHTSA ID Number: 10224307 Manufacturer Communication Number: PIT5832C Summary This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.   Condition Some technicians may experience one or more of the following concerns after replacing or reprogramming a module on one of the new Vehicle … Read more

Engine Compartment and/ or Inside the IP/Dashboard Tick or Rattle Noise From Purge Solenoid Resonance Through PCV Tube – 2020-2021 Buick Enclave & Chevrolet Traverse

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2021 Buick Enclave

NHTSA ID Number: 10201269 Manufacturer Communication Number: PIP5796B   Summary This Preliminary information communicates a noise from the purge hose heard in the vehicle and the repair preliminary instructions to dampen this noise. PI was modified to add a special labor operation for this PI.     4 Affected Products Vehicles MAKE MODEL YEAR BUICK ENCLAVE 2020-2021 … Read more