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
Right Rear Engine Components
Powertrain Component Views
Right Rear Engine Components (LFW)
1 - B74 Manifold Absolute Pressure Sensor
2 - T8E Ignition Coil 5
3 - T8C Ignition Coil 3
4 - Q12 Evaporative Emission Purge Solenoid Valve
5 - Q38 Throttle Body
6 - B23B Camshaft Position Sensor - Bank 1 Intake
7 - B23D Camshaft Position Sensor - Bank 2 Intake
8 - Q6D Camshaft Position Actuator Solenoid Valve - Bank 2 Intake
9 - Q6C Camshaft Position Actuator Solenoid Valve - Bank 2 Exhaust
10 - B23C Camshaft Position Sensor - Bank 2 Exhaust
11 - Q6B Camshaft Position Actuator Solenoid Valve - Bank 1 Intake
12 - Q6A Camshaft Position Actuator Solenoid Valve - Bank 1 Exhaust
13 - B23A Camshaft Position Sensor - Bank 1 Exhaust
14 - B68A Knock Sensor 1
15 - B26 Crankshaft Position Sensor
16 - T8A Ignition Coil 1
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.