Park Lamp Relay Control Circuit
Table of contents
B3838 GMC Possible Causes
- Faulty Park Lamp Relay
- Park Lamp Relay harness is open or shorted
- Park Lamp Relay circuit poor electrical connection
- Faulty Body Control Module (BCM)
How do I fix code B3838 GMC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the B3838 GMC code
The cost of diagnosing the B3838 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B3838 GMC Description
The Body Control Module (BCM) controls the park lamp relay through the park lamp relay control circuit. The BCM grounds the park lamp relay control circuit which energizes the park lamp relay. The Diagnostic Trouble Code (DTC) sets when the BCM must be commanding the park lamp relay to energize.