Question about 2003 GMC Yukon XL
Probably all related , all these systems are interrelated .One won't work without the other. Could have a problem with the TAC system - electronic throttle control . Your best bet , take it an have the computers checked for DTC'S - diagnostic trouble codes . Do you know anything about automotive electronic's ,serial data communication networks ?
Posted on Sep 16, 2017
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Posted on Jan 02, 2017
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