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GMC Sierra Owners Manual
TachometerInstruments and Controls / Warning Lights, Gauges, and
Indicators / Tachometer
The tachometer displays the engine speed in revolutions per minute (rpm). For a description of how Grade Braking affects vehicle speed while the Tow/Haul Mode is activated, see Tow/Haul Mode on page 9‑42 for more information.
If the vehicle is a hybrid, see the hybrid supplement for more information.
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