Service Leveling System

Service Leveling System/Speed Limited Message Due to Aftermarket Modifications – 2021 Cadillac Chevrolet GMC

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NHTSA ID Number: 10202399 Manufacturer Communication Number: PIT5854 Summary This Preliminary information communicates information on vehicle speed being limited due to aftermarket lower kit being installed on the vehicle.   Condition Some customers may comment on a Service Leveling System/Speed Limited message on DIC. Dealers may find no DTC’s present.   Cause This could be caused by … Read more

Vehicle Software Update (VeSCoM) – 2021 Chevrolet GMC

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2021 Chevrolet Suburban

NHTSA ID Number: 10199258 Manufacturer Communication Number: 21NA044   Summary This technical bulletin provides repair information to correct a customer concern of SUV Vehicle Software Configuration Management Update (VeSCoM).     4 Affected Products Vehicles MAKE MODEL YEAR CHEVROLET SUBURBAN 2021 CHEVROLET TAHOE 2021 GMC YUKON 2021 GMC YUKON XL 2021   Condition Some customer 2021 SUVs … Read more

Service Leveling System / Service Headlight System / DTC U0132 – 2021 Cadillac Chevrolet GMC

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2021 Chevrolet Tahoe

NHTSA ID Number: 10184107 Manufacturer Communication Number: PIT5795   Summary This Preliminary information communicates and issue with a either a Service Leveling or Service Headlight message displayed on the DIC.  When checking for DTC’s a U0132 for Lost Communication with K5 Automatic Level Control Module (ALCM) may be set in several modules.  When trying to communicate with the Automatic … Read more