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.
Steering Column Lock Actuator Module Parameter Reset (LS - Manual Transmission Only)
2002 Chevrolet Tahoe 4.8 V, 4WDSECTION Steering Column Lock Actuator Module Parameter Reset (LS - Manual Transmission Only)
NOTE:
Steering Column Lock (SCL) actuator will only allow communication with NGS tester after SCL has been activated. SCL can be activated 2 ways: open driver's door and DO NOT put key in ignition lock cylinder, or press a single button on key fob with ignition key removed from ignition lock cylinder. SCL actuator will stay activated for 30 minutes after driver door is opened or a key fob button has been pressed.
- Remove ignition key from ignition lock cylinder. Close and open driver's door. Connect NGS tester to Data Link Connector (DLC) and use service function card. Select SCLM, then ENTER SECURITY ACCESS. Wait 8 minutes for security access to be granted. Select PARAMETER RESET.
- Insert ignition key into ignition lock cylinder and turn ignition switch to RUN position. Using scan tool, select ICM, then select ENTER SECURITY ACCESS. Wait 10 minutes for security access to be granted. Select RESET SCLM PARAMETER. Disconnect NGS tester.
- Turn ignition switch to OFF position. Remove ignition key from ignition lock cylinder. Insert ignition key into ignition lock cylinder. Turn ignition switch to RUN position. Turn ignition switch to OFF position and remove ignition key from ignition lock cylinder.
NOTE:
DO NOT take more than 30 minutes to complete step 1)
. SCL will not stay actuated after 30 minutes.
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.