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 MANUALSCHEVROLET1994K 2500 SUBURBAN 4WD V8-350 5.7LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULESERVICE AND REPAIRVEHICLE CONTROL MODULE (VCM) REPLACEMENT
1994 Chevrolet K 2500 Suburban 4WD V8-350 5.7L
Vehicle Control Module (VCM) Replacement
1994 Chevrolet K 2500 Suburban 4WD V8-350 5.7LSECTION Vehicle Control Module (VCM) Replacement
Fig. 80 VCM Replacement.:
Fig. 81 PROM Removal.:
1. Disconnect battery ground cable.
2. Remove righthand hush panel, then disconnect VCM electrical connectors.
3. Remove VCM mounting hardware, Fig. 80.
4. Remove VCM from vehicle, then remove PROM from VCM as follows:
a. Push both PROM retaining clips back away from PROM, Fig. 81.
b. Grasp PROM at both ends and lift it out of the socket.
c. Do not remove the cover from the PROM.
5. Gently install PROM into new VCM.
6. Reverse procedure to install VCM, then reprogram VCM according to TECH 1 scan tool instructions.
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.