I need to reset the ECU on a 2003 Tahoe. The power seats are not working properly and I am having issues with the the Climate Control blower where only high works. I have read several places that unplugging the ECU fuse will reset these. I have done this by disconnecting the battery before (and everything is fine for a few months) but that resets EVERYTHING and it is a pain. Nothing in the manual or in any of the 3 fuse boxes is marked "ECU". Which one or ones power the ECU. Thanks, Mason
SOURCE: Recently changed battery in 03 tahoe now climate
Look around under the hood. You probably dislodged a vacuum hose.
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