Oil service reset Chevrolet GMC Trucks Colorado/Canyon

2004

Turn the ignition to run (one position before starting engine).
Display OIL LIFE on the DIC by pressing the reset stem button.
Press and hold the reset stem. The oil life will change to 100% and a beep will sound.
Turn the ignition off and then start the engine to verify the indicator has been reset.

or

Turn the ignition to run (one position before starting engine).
Immediately after Step 1 press and release the gas pedal 3 times within 5 seconds.
Turn the ignition off and then start the engine to verify the indicator has been reset.

2005-2010

Turn the ignition to run (one position before starting engine).
Press and release the TRIP/RESET stem button in the DIC until the OIL LIFE message is displayed (located in the lower centre of instrument cluster).
Once the alternating OIL LIFE and RESET messages appear on the DIC display, press and hold the reset stem until several beeps sound. This confirms that the oil life system has been reset.
Turn the ignition off and then start the engine to verify the indicator has been reset.

Service oil reset Hummer H3

2006-2010
Turn the ignition to run (one position before starting engine).
Press and release the stem in the lower center of the instrument cluster until the OIL LIFE message is displayed.
Once the alternating OIL LIFE and RESET messages appear, press and hold the stem until several beeps sound. This confirms that the oil life system has been reset.
Turn the ignition off and then start the engine to verify the indicator has been reset.