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 MANUALSCADILLAC2002ELDORADO V8-4.6L VIN YREPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTCELLULAR PHONESERVICE AND REPAIRONSTAR REPROGRAMMINGVEHICLE COMMUNICATION INTERFACE MODULE (VCIM)
2002 Cadillac Eldorado V8-4.6L VIN Y
Vehicle Communication Interface Module (VCIM)
2002 Cadillac Eldorado V8-4.6L VIN YSECTION Vehicle Communication Interface Module (VCIM)
1. Record the STID number from the label on the new module (10 Digits).
2. Record the ESN number from the label on the new part, (11 digits, no letters).
3. Install the new VCIM.
4. After replacement, press and hold the OnStar "End Call" button (black with white dot); watch for the OnStar status light change from Green to Red to Green.
5. After replacement, press the blue OnStar button twice to connect to OnStar. Tell the advisor that this vehicle has a new VCIM and a new STID number to put in the customers account. Tell the advisor that this vehicle has a new VCIM and a new ESN to put in the customers account. Follow any additional instructions given by the Advisor.
6. The old CIM must be returned for core credit. Use the address label included in the original box. Failure to return core will result in a debit.
2. Record the ESN number from the label on the new part, (11 digits, no letters).
3. Install the new VCIM.
4. After replacement, press and hold the OnStar "End Call" button (black with white dot); watch for the OnStar status light change from Green to Red to Green.
5. After replacement, press the blue OnStar button twice to connect to OnStar. Tell the advisor that this vehicle has a new VCIM and a new STID number to put in the customers account. Tell the advisor that this vehicle has a new VCIM and a new ESN to put in the customers account. Follow any additional instructions given by the Advisor.
6. The old CIM must be returned for core credit. Use the address label included in the original box. Failure to return core will result in a debit.
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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.