Question about GMC Yukon
There could be many reasons for the same.This is usually a bad connection or a problem within the vehicles body control module and not the pcm. It is also common to get wiring issues around the parking brake assembly and in the drivers side kick panel. I would check these wiring areas first and then replace the BCM if nothing is found.
If everything is fine, then more likely it is Bad Throttle Control Module.
Let me know,if needed further assistance.
Hope i helped you.
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Posted on Jun 03, 2010
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Posted on Jan 02, 2017
Tips for a great answer:
Limited throttle mode--The control module will continue to use the accelerator pedal for throttle control; however, the maximum throttle opening is limited.
Throttle default mode--The control module will turn off the throttle actuator motor and the throttle will return to the spring loaded default position.
Forced idle mode--The control module will perform the following actions:
Limit engine speed to idle by positioning throttle position, or by controlling fuel and spark if throttle is turned off.
Ignore accelerator pedal input.
Engine shutdown mode--The control module will disable fuel and de-energize the throttle actuator.
Powertrain Control Module Description for the 4.8L, 5.3L and 6.0L engine
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