When inspecting cylinder compression, the engine should be at room temperature, the throttle should be open, the spark plugs removed and the battery at full charge. The lowest reading cylinder should not be less than 70% of the highest and no cylinder reading should be less than 100 psi. Turn ignition key until engine cranks through four compression cycles per cylinder. Normal compression builds up quickly and evenly to specified compression on each cylinder. |
Chevrolet Cobalt Owners Manual. Shifting Out of Park (Automatic Transmission)
This vehicle is equipped with an electronic shift lock
release system. The shift lock release is designed to:
- Prevent ignition key removal unless the shift lever
is in P (Park) with the shift lever button fully
released, and
- Prevent movement of the shift lever out of
P (Park) unless the ig ...