Quote:
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Originally Posted by MtnHmr
The check engine light and rough idle was explained to me as follows by GM: As I descend the hill with my foot off of the gas pedal the car thinks it should be at idle. As the descend continues the rpm may rise slightly due to the steepness of the hill. Because the computer is confused by the rise in rpm it reacts and shuts off the gas to the motor.
For those of you you take your rigs off road you know how dangerous this could be especially if the motor was to die. Compression braking would be lost as well as your brake assist. I feel that this is totally unacceptable for a vehicle that was designed to be used off road.
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I'm having a hard time with this letter. Have your service department try another five speed and see if it reacts the same. If not, something is wrong with your vehicle. The designers who worked on the H3 product do understand off-road driving, and do understand compression braking, and I can't believe they would allow this to happen.
I have never, in all my years working for a car manufacturer, or working on cars, read a statement that the computer is confused and shuts the engine off. Designed to shut off the motor yes, such as over revving protection, but this does not sound normal.