Question about 2002 GMC Envoy

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Will not kick down high rev

Goes into gear wont kick down right away and at 100 kph stays at 3000rpm

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  • 14 Answers

Maybe the ECU blocks the engine, becase of some kind of fault...
Try to read faults from ECU via some kind of reader... Can buy one on EBAY for few bugs, 10 maybe

Posted on Apr 16, 2014

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wadingriver
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SOURCE: gmc sierra high rev on start

clean your High Idle control valve. It's attached to the Throttle body

Posted on Oct 05, 2012

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