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Reset Engine Light
12-15-2009, 02:07 PM
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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?
12-15-2009, 02:37 PM
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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.
12-15-2009, 03:18 PM
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I bet the fuse trick would work on a Yukon as well. The two for an LS1 car are the PCM BAT and PCM IGN.
