The 2012 Buick Enclave's 3.6-liter V6 uses two camshaft position sensors—one for each bank. In total, there are two sensors.
These sensors provide timing data to the engine control module to coordinate ignition timing and variable valve timing, ensuring proper operation across all cylinders. They are mounted on the front of the engine, one on the left bank and one on the right bank, near the timing cover, and monitor the position of the camshafts in their respective banks.
Sensor count and placement
Here is a concise breakdown of how this is arranged on the Enclave's engine timing system.
- Two camshaft position sensors in total
- One sensor monitors the left-bank camshafts
- One sensor monitors the right-bank camshaft position
- Each sensor detects cam position to help the ECM control ignition timing and variable valve timing
With both sensors functioning, the engine maintains smooth idle, proper timing, and optimal performance. If a CPS fails, you may see a malfunction indicator light and start or running issues, and diagnostics should confirm the fault code.
Additional context
Why this matters
Understanding the two-sensor arrangement helps with diagnosing start-up problems and misfires in GM's 3.6L VVT engines. Replacement typically involves disconnecting the battery, removing the faulty sensor, and installing a new one with correct torque and alignment to the timing reference.
Summary: The 2012 Buick Enclave has two camshaft position sensors—one on each bank of the 3.6L V6—providing essential timing data for ignition and valve timing control.