In most GMC Terrain models, the number of camshaft position sensors depends on the engine you have. The common 2.4L inline-4 typically uses a single camshaft position sensor, while the available 3.0L V6 variant uses two sensors. Always verify against your exact model year and engine code.
Engine options and CMP sensor configurations
The Terrain has seen several engines across its production run. The camshaft position sensor count tracks the DOHC arrangement in each engine.
- 2.4L Ecotec inline-4 (DOHC) — typically 1 camshaft position sensor.
- 3.0L V6 (DOHC) — commonly 2 camshaft position sensors (one per bank).
Notes: Variations can occur by model year or regional market. The exact sensor count should be confirmed with the vehicle’s VIN and service documentation.
Why the sensor count matters
Knowing the correct sensor count helps when diagnosing idle, misfire, or timing issues. Replacing the wrong sensor or misidentifying its location can lead to incorrect timing data and drivability problems.
How to verify on your vehicle
To confirm the exact CMP sensor arrangement for your GMC Terrain, check the engine code in the VIN plate, consult the GM service manual for your year, or inspect the timing cover area to locate the sensor(s) and markings.
Summary: The GMC Terrain's camshaft position sensor count varies by engine. The 2.4L engine typically uses one CMP, while the 3.0L V6 variant typically uses two CMP sensors. Always verify with VIN and engine code.