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.
2012 GMC Canyon 2WD L5-3.7LFACTORY OEM SERVICE PROCEDURE
Transmission Position Sensor/Switch: Service and Repair
Manual Shift Detent Lever with Shaft Position Switch Assembly Replacement
Removal Procedure
1. Remove the transmission oil pan and filter. Refer to Automatic Transmission Fluid and Filter Replacement Automatic Transmission Fluid and Filter Replacement.
2. Remove the following parts: (89), (92), (88), (85) and (84)
3. Remove the manual shaft seal (82) with a screwdriver.
Installation Procedure
1. Inspect the following items:
* Manual shaft (84) for damage or burrs
* Parking lock actuator assembly (85) for damage
* Manual shift detent lever with shaft position switch assembly (88) for damage or cracks
* Manual valve link (89) for damage
* Manual shift detent lever pin (92) discard - Do NOT reuse.
Caution: Refer to Fastener Caution Fastener Caution.
2. Install the following items:
* Manual shift detent lever with shaft position switch assembly (88)
* Parking lock actuator assembly (85)
* Manual shaft (84) (model dependent)
* NEW manual shift detent lever pin (92)
* Manual valve link (89)
Tighten the nut to 31 Nm (23 lb ft).
3. Install the transmission oil pan and filter. Refer to Automatic Transmission Fluid and Filter Replacement Automatic Transmission Fluid and Filter Replacement.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.