B3055 on Chevrolet: How to Diagnose & Fix
Key Not Present
1 Chevrolet model · 1 documented issue · $250-$700 repair
B3055 on Chevrolet by model: symptoms, diagnosis and fix
First-generation Colorado/Canyon trucks commonly suffer from Passlock-related ignition switch failures that trigger a crank-no-start or start-and-stall condition with the security light illuminated. Owners often report the truck starting normally after a 10-minute relearn wait, then failing again later. GM issued service information on theft deterrent and ignition switch diagnosis, and the issue is widely documented in owner complaints and forums.
Common Symptoms
- crank no start
- starts then stalls
- security light on
- intermittent no start
- must wait 10 minutes before restart
- no injector pulse
How to Fix
Diagnosis includes checking for theft deterrent codes, monitoring the security indicator, and verifying ignition switch/Passlock sensor operation. The usual fix is replacing the ignition switch assembly and performing the relearn procedure; some owners also inspect wiring at the column and battery voltage because low voltage can aggravate the system. If repeated failures continue, the lock cylinder housing and related wiring should be inspected.
Sources for this issue (3)
B3055 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does B3055 mean on a Chevrolet?
B3055 stands for "Key Not Present." B3055 is a vehicle access/keyless-entry body code generally defined as 'key not present.' The keyless/passive entry module sets this code when it cannot detect a valid key fob inside the vehicle during an operation that requires the key (such as a push-button start). It usually points to a low fob battery, a fob/antenna issue, or a system fault, and typically affects keyless start/entry convenience rather than vehicle safety. On Chevrolet it is documented across 1 model: Colorado.
What are the most common causes of B3055?
The most common causes of B3055 are: Dead or weak key fob battery, Key fob out of range or failed, Faulty interior keyless-entry antenna, Damaged wiring or connector to an antenna, RF interference, Keyless control / receiver module fault. The specific cause varies by vehicle.
How much does it cost to fix B3055 on a Chevrolet?
Published repair estimates on Chevrolet range from $250 to $700 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.