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.
Pinpoint Test X: U3000:49
- Normal Operation and Fault Conditions
The BCM receives voltage at all times from the BJB.
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition BCM U3000:49 Control Module: Internal Electronic Failure This DTC sets when the BCM detects an internal failure. Possible Sources
- BCM
- X1 CONFIRM THE DTC (DIAGNOSTIC TROUBLE CODE) RESETS
- Check vehicle service history for recent service actions related to the BCM.
- Ignition ON.
- Connect the diagnostic tool.
- Using the diagnostic scan tool, clear the DTC.
- Wait 10 seconds.
- Using the diagnostic scan tool, perform the BCM self-test.
Is DTC U3000:49 still present?
Yes GO to X2 No The system is operating correctly at this time. The DTC may have been falsely set by the BCM causing the signal to momentarily stop and set the DTC. - X2 INSTALL BCM (BODY CONTROL MODULE) PMI (PROGRAMMABLE MODULE INSTALLATION)
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
- Install BCM As-Built data from PTS following scan tool instructions.
Is DTC U2100:00, U2101:00 and/or U2200:00 still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM. REFER to: Body Control Module (BCM) . No The system is operating correctly at this time.
NO RELATED
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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.