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.
Speedometer and Odometer
Safety Belt RemindersChevrolet Cobalt Service & Repair Manual. Precautions
1.
After disassembling power brake unit,
soak metal components in solvent.
2.
Use only alcohol on components containing
rubber. After components have been thoroughly cleaned and rinsed
in solvent, they should be washed again ...