Folks, Don't be alarmed. This is completely normal....when its near freezing temps the engine will idle for a short while until oil pressure is stabilized and has had a chance to circulate in the engine. Then slowly it will idle up to approx. 1500 rpm. It will hold that rpm until the park brake is released or brake pedal is depressed or until engine temp gets up to near normal (160 deg). When in gear the function is disabled so it won't happen while driving. There's a description of this function in the manual. My GMC duramax has the same feature.
__________________
C and D Meyerhoff
2011 SuperNova 6400
2 Great Kids & 1 Great Dog
|