The tachometer displays the engine speed in revolutions per minute (rpm).
Notice: If the engine is operated with the tachometer in the shaded warning area, the vehicle could be damaged, and the damages would not be covered by the vehicle warranty.
Do not operate the engine with the tachometer in the shaded warning area.
Chevrolet Cobalt Service & Repair Manual. Valve Cover Gasket R&R
1.
Remove the intake manifold cover.
2.
Remove the air cleaner outlet duct.
3.
Disconnect the intake (3) and exhaust
(2) camshaft position actuator solenoid valve electrical connectors,
Fig. 1.
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