Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Tip: Diagnosing Vehicles With ONSTAR DTC B101D-37 (PIC5492E)
Reference number: PIC5492E
Supersedes refnos: PIC5492D
DIAGNOSTIC TIP: DIAGNOSING VEHICLES WITH ONSTAR DTC B101D-37
TECHNICAL SERVICE BULLETIN
| Affected Model(s): | 2011-2017 GM Passenger Cars & Light Duty Trucks with OnStar (RPO UE1) 2000 - 2015 Canada GM Passenger Cars & Trucks with Canada Upgrade (latest version of Bulletin 15-08-44-001) |
CONDITION/CONCERN
While diagnosing a vehicle with an OnStar concern, technicians may find history DTC B101D-37 in the OnStar VCIM while checking for codes.
RECOMMENDATION/INSTRUCTIONS
Engineering has determined that this code will only display in history on the scan tool and will not cause issues with OnStar system operation. Dealers are to disregard this history DTC and address symptoms as described by the customer, including any additional codes that may be current.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.