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 MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 55 (SHIFT INTERLOCK SYSTEMS)REMOVAL & INSTALLATIONELECTRONIC COLUMN LOCK ASSEMBLYREMOVAL
1999 GMC Forward Control 5.7 R, Automatic
Electronic Column Lock Assembly: Removal
1999 GMC Forward Control 5.7 R, AutomaticSECTION Removal
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, 2002 Chevrolet RV Cutaway, and 2002 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
- Disable the SIR system. Remove inflator module on steering wheel. See AIR BAG DEACTIVATION PROCEDURES article in GENERAL INFORMATION. Remove steering wheel and SIR coil. See appropriate STEERING COLUMNS article in STEERING.
- Install the plate adapter and the lock plate compressor to the steering shaft and compress the shaft lock shield. See Figure . Remove the lock shield retainer from the steering column shaft. Remove the plate adapter and the lock plate compressor from the steering shaft.
- Remove the following components from the steering shaft: shaft lock shield (4) and turn signal cancel cam (3). See Figure .
- Rotate the steering column lock cylinder to the OFF-LOCK position. Insert a small screwdriver into the slot on the electronic lock module and push down on the park lock cable locking tab and remove park lock cable (1) from the electronic lock module. See Figure . Rotate the key alarm switch connector from the electronic lock module.
- Disconnect the passlock electrical connector from the electronic lock module. See Figure . Remove the ignition lock cylinder. Disconnect the ignition switch (2) from the electronic lock module using the ignition switch connector release tool. See Figure .
- Remove the ignition switch (2) from the electronic lock module (2). See Figure . Allow the ignition switch (2) to hang freely. Remove the electronic lock module (1) mounting screws (2). Remove the electronic lock module from the steering column housing.
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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.