Posted by Justin on March 01, 04 at 18:51:53:
A friend asked me about this procedure the other day, thought others might be interested
2001 - 04 Sierra
2002 - 04 Sierra Denali
2001 - 04 Silverado
2001 - 04 Yukon and Yukon XL
2001 - 04 Tahoe and Suburban
2001 - 04 Escalade
2002 - 04 Escalade EXT
2002 - 04 Avalanche
2001 - 04 Yukon Denali
2003 - 04 Hummer H2
2003 - 04 Express
2003 - 04 Savana
1. Turn the ignition to RUN but with the engine off.
2. Fully push and release the accelerator pedal slowly three times within five seconds.
3. If the Change Oil Soon light flashes, the system is resetting.
4. Turn the key to OFF.
5. Start the vehicle.
6. The oil life will change to 100%.
7. If the Change Oil Soon light comes back on, the system has not reset.
Repeat the procedure.