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.
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HOMESERVICE MANUALSCHEVROLET2007EXPRESS 2500 V8-6.0LREPAIR AND DIAGNOSISBODY AND FRAMELOCKSKEYLESS ENTRYTESTING AND INSPECTIONSYMPTOM RELATED DIAGNOSTIC PROCEDURESKEYLESS ENTRY SYSTEM INOPERATIVE
2007 Chevrolet Express 2500 V8-6.0L
Keyless Entry System Inoperative
2007 Chevrolet Express 2500 V8-6.0LSECTION Keyless Entry System Inoperative
Keyless Entry System Inoperative
Test Description
Step 1 - Step 11:
Step 12 - Step 24:
The numbers below refer to the step numbers on the diagnostic table.
14. A DMM must be used in this step. A test lamp may give incorrect results, testing for B+ supply from the body control module (BCM).
15. An illuminated test lamp at step 16 reveals a short to voltage in the serial data circuit.
RENDER: 1.0x
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.