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.
1999 Chevrolet Cutaway 7.4 JFACTORY OEM SERVICE PROCEDURE
Test T: Power Door Lock Control Module Attempts To Lock Doors While Side Door Remains Open
- Disconnect power door lock control module connector. Connect self-powered test light between ground and module connector terminal "F" (White/Black wire). Open side door. If test light does not illuminate, go to next step. If test light does illuminate, replace power door lock control module.
- Disconnect side door jamb switch connector. Connect self-powered test light between ground and side door jamb switch connector terminal "B" (Black wire). If test light illuminates, go to next step. If test light does not illuminate, repair open circuit in Black wire between side door jamb switch and ground.
- Connect fused jumper wire between battery voltage and power door lock control module connector terminal "F" (White/Black wire). Connect test light between ground and side door jamb switch connector terminal "A" (White/Black wire). If test light illuminates, replace side door jamb switch. If test light does not illuminate, repair open circuit in White/Black wire between power door lock control module and side door jamb switch.
Factory Service Tools
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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.
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