Question about 2003 Hummer H2
We have Cadillac 2003 and the message indicate reduce engine power, we scanned by tech 2 and indicates Throttle actuator control performace, we replaced the parts and the problem still exist.
When you replace the throttle actuator, you need to calibrate the part with a proper diagnostic tool
Posted on Jun 02, 2009
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Posted on Jan 02, 2017
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Your going to need to take this to a ASE certified repair shop or the dealer , you probably don't have the diagnostic tools to trouble shoot this problem.
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