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 MANUALSCHEVROLET1999CUTAWAY 7.4 JREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCRUISE CONTROL SYSTEMSCRUISE CONTROL SYSTEM - TRUCKS DIESELSYSTEM TESTSCRUISE CONTROL WILL NOT DISENGAGE WHEN BRAKE PEDAL IS APPLIEDEXPRESS & SAVANA
1999 Chevrolet Cutaway 7.4 J
Express & Savana
1999 Chevrolet Cutaway 7.4 JSECTION Express & Savana
- Disconnect Powertrain Control Module (PCM) 24-pin connector C2 (Brown). Turn ignition switch to RUN position. Connect a test light between PCM connector C2 (harness side) terminal B9 (Purple wire) and ground. Test light should be illuminated. While observing test light, apply brake pedal. If test light remains illuminated, go to next step. If test light goes out, replace PCM.
- Disconnect TCC/brake switch connector. Connect a test light between TCC/brake switch connector (harness side) terminal "C" (Purple wire) and ground. If test light does not illuminate, replace TCC/brake switch. See BRAKE & CLUTCH RELEASE SWITCHES under REMOVAL & INSTALLATION. If test light illuminates, repair short to voltage in Purple wire between TCC/brake switch, PCM and Electronic Brake Control Module (EBCM).
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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.