change oil light
#11
It's not a trick, it was purposefully engineered in on many GM platforms. Key on, engine off, doors closed, depressing the accelerator pedal (3+ quick times) causes the PPS to communicate to the PCM and upon the 3rd quick press command it to reset the CHANGE OIL message.
Why 3 complete quick presses (to the floor) you ask? A consumer may bump the accelerator pedal once or twice getting settled in/preparing to get out, but they are highly unlikely to bump the pedal 3 quick times all the way to the floor and accidentally reset the OLMS.
There are a bunch more short cuts built in, that are not shared with John Q (because people that can't change a light bulb could screw up a free lunch ) like how to clear a BCM fault with the emergency brake...... and .....
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