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 Terrain AWD V6-3.0LFACTORY OEM SERVICE PROCEDURE
Liftgate Control Module (TB5)
Luggage Compartment/Rear of Vehicle Component Views
Liftgate Components
1 - B71R Liftgate Object Sensor - Right (TB5)
2 - E18 Rear Defogger Grid
3 - B71L Liftgate Object Sensor - Left (TB5)
4 - M45 Rear Wiper Motor
5 - K39 Liftgate Control Module (TB5)
6 - A23C Liftgate Latch Assembly
7 - B70 Liftgate Close Switch (TB5)
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.