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.
2008 Saturn Astra L4-1.8LFACTORY OEM SERVICE PROCEDURE
Transmission Range Switch Replacement
Transmission Range Switch Replacement
Removal Procedure
1. Remove the left transmission mount. Refer to Transmission Mount Replacement - Left Side (Service and Repair) .
2. Detach the selector cable (2) from the selector lever.
3. Remove the wiring harness plug (1) from the selector lever position switch.
Release the wiring harness plug (arrow) and disconnect.
4. Detach the selector lever (2) from the selector lever shaft.
Remove the nut (1).
5. Remove the 2 bolts (1).
6. Remove the nut (1).
Open the retaining plate (2).
7. Release the transmission range switch from the selector lever shaft and transmission.
Installation Procedure
1. Attach the transmission range switch to the selector lever shaft and transmission.
* Attach the new retaining plate (2).
Notice: Refer to Fastener Notice (Fastener Notice) .
* Secure nut with the retaining plate.
Tighten the nut (1) to 8 N.m (71 lb in).
Important: Do not tighten bolts yet.
2. Install the 2 bolts (1).
3. Attach the selector lever (2) to the selector lever shaft.
Tighten the nut (1) to 16 N.m (12 lb ft).
4. Adjust the selector lever position switch. Refer to Transmission Range Switch Adjustment (Adjustments) .
5. Tighten the 2 bolts and the transmission range switch on the transmission.
Tighten the 2 bolts to 25 N.m (18 lb ft).
6. Attach the selector cable (2) to the selector lever.
7. Attach the wiring harness plug (1) to the selector lever position switch.
Attach the wiring harness plug and lock (arrow),
8. Install the left engine mount. Refer to Transmission Mount Replacement - Left Side (Service and Repair) .
9. For programming procedures, refer to Control Module References (Programming and Relearning) .
Factory Service Tools
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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.