GM · DTC LOOKUP
GM Passlock II fault — GM Passlock II anti-theft active
GM diagnostic code. Below: what it means, common causes, symptoms, and the exact bench-programming fix path.
Common causes
- •Cluster swap
- •Key tumbler replaced
- •Failed Passlock learn
Symptoms you'll see
- •"Theft" warning
- •Crank-no-start
- •10-minute relearn window often required
The fix path
GM Instrument Cluster Upgrade + Mileage Program ($200) clears Passlock counter via bench access.
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 BCM no communicationGM BCM (Body Control Module) unresponsiveChevy 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.