Apr 28, 2016, 06:33 PM
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Reset Engine Light
Reset Engine Light Is there a way to reset an engine light on a 2003 Yukon Denali without an OBDII tool or scanner? I know autozone and the rest can do it but that is the problem autozone is the only place in town and thier scanner is broken. The check engine light stays on and I believe it may be due to gas it does not like. I remember on the LS1s you would pull two fuses then turn on the ignition and everything would reset. Is something like this possible for the Yukon?
TECH Senior Member
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
You can probably reset it by disconnecting the battery for a while, but you really need to find out what the code(s) are. Some codes set the MIL immediately on the first ignition cycle, others take 2 or 3 failures.
