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 MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 60 (SHIFT INTERLOCK SYSTEMS)REMOVAL & INSTALLATIONSHIFT LOCK SOLENOIDINSTALLATION
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Shift Lock Solenoid: Installation
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
- Using a flat head screwdriver, pry the lock button of the park lock cable into the UNLOCKED position (1). Install the park lock cable at the shift control assembly.
- With the shift control assembly in Park position and the ignition key in RUN position, snap the park lock cable into the inhibitor housing. Turn the ignition key to the LOCK position.
- Snap the cable end onto the pin of the transmission gearshift lever (4). Push the park lock cable toward the gearshift lever assembly in order to remove the slack. Push the lock button on the park lock cable down into the LOCKED position.
- Inspect the park lock cable as follows:
- With the gearshift lever in Park position and the ignition key in the LOCK position, ensure the gearshift lever cannot move to another position. The ignition key should be removable from the lock cylinder.
- Turn the ignition key to RUN position and move the gearshift lever to Neutral position.
- Ensure the ignition key cannot be turned to the LOCK position. If the above checks are okay, proceed to next step. If the above checks are not okay, readjust the park lock cable.
- Raise the steering column and install the 4 bolts. See appropriate STEERING COLUMNS article in STEERING. Install the console trim plate. See CONSOLE TRIM PLATE .
- Install the left closeout insulator panel. See LEFT SIDE INSULATOR PANEL . Secure the left front carpet.
NOTE:
Do not attach the cable end to the pin on the control lever. Do not attempt to perform this step with the ignition key in any other position except RUN.
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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.