Question about 2004 Chevrolet TrailBlazer
I'm taking a wild guess that you recently unhooked or replaced your battery?
Your problem is a dirty throttle body, and if you do it yourself, can cost you about $5 for the can of throttle body cleaner. Unhook your battery again, and clean the throttle body and butterfly very well, must be shiny. Careful as the butterfly is very sharp. While removing the entire throttle body and cleaning it is best, leaving it bolted on will solve your problem too. When finished, hook your battery back up and drive around for 20 minutes or so with all accessories OFF. During this period, your computer will relearn a properly functioning throttle body.
Your computer learned some bad habits before the battery was unhooked the first time. When it was hooked back up, it thought the throttle body was clean and functioning properly. Cleaning it takes care of this problem. I do mine about once a year.
Posted on Mar 21, 2011
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Posted on Jan 02, 2017
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