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. Body Control System Diagnosis & Testing
The body control module (BCM)
has a bussed electrical center integrated into the housing. Body control
relays and fuses are installed directly on the BCM, which simplifies wiring
and junction blocks on the vehicle. The body control system consists of
the BCM and its associated ...