2008 GMC 5.3 sierra shifts but won’t engage into gear at all. Like the trans isn’t going into gear cause its not receveing a signal to do so….Related Questions1997 gmc sierra 1500how to replace pump bushing for transmission.. the one located behind torque converter1997 Gmc Sierrabrake lights work if i lightly press the bake pedal, if i push all the way down the brake lights fail. i am not a car guy, i have been told to check my ground? i dont know what that means. any help appreciated93 Gmc Sierrawhen its warmed up it shuts off all new parts from sending unit, Tpsensor, harness wire, etc..