GM Service Manual Online
For 1990-2009 cars only
Makes
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GMC_Truck
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2006
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TopKick C-Series (Conventional) C4/C5
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Instrument Panel
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Warning Lights, Gages, and Indicators
🢒 Tachometer
7.2L Caterpillar Diesel Engine and 7.8L DURAMAX Diesel Engines
Gasoline and 6.6L DURAMAX Diesel Engines
This gage shows the safe operating range for the engine speed in revolutions per minute (rpm).