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GM BCM no communication — GM BCM (Body Control Module) unresponsive
GM diagnostic code. Below: what it means, common causes, symptoms, and the exact bench-programming fix path.
Common causes
- •BCM internal failure
- •Power loss to BCM
- •Comm-bus fault
Symptoms you'll see
- •Multiple body systems dead
- •PassLock fault
- •Cluster shows errors
The fix path
BCM repair varies by chassis. For cluster + PassLock-related faults: GM Instrument Cluster Upgrade + Mileage Program ($200) clears the cluster side.
AML services that fix this
Mail in the affected module, we bench-program, ship back next business day. Flat pricing, return shipping included.
Related diagnostic codes
Cluster mileage mismatchReplacement cluster shows wrong mileagePasslock faultGM Passlock anti-theft triggered after cluster swapGM Passlock II faultGM Passlock II anti-theft activeChevy Cruze IMMO faultChevy Cruze BCM-pinned IMMO failureCadillac CTS cluster failureCadillac CTS / SRX instrument cluster faultGM Duramax no startChevy/GMC Duramax cranks no startNot sure which service applies?
Text us your year/make/model + which scanner caught the code — we'll tell you exactly which module to ship and which service to pick.