There is a knock, tap, coming from engine. I've ruled out lifters. But I can't figure where noise is coming from. Goes away sometimes when engine is warm

There is a knock, tap, coming from engine. I've ruled out lifters. But I can't figure where noise is coming from. Goes away sometimes when engine is warm 7 Answers

security light not on, but gmc 1500 will not start there is a noise from the cycliinder where the key goes in, my truck was hit and hasn't started since but will turn over, will run if feed gas.. 1 Answer

Truck hit, have tried the security 10 minute on off stuff, but I do not have a yellow blinking light never did... however there is a noise after you turn the key to try and start that is like from the...

I have a 2010 gmc sierra, I get that service traction control, stabilitrak, engine power reduced. I changed the throttle body but no change? (Engine light is always on) 3 Answers

I lose power and can't go pass 40 mph. I have to pull over and turn the truck off and wait a few minutes, until I can drive again. Truck goes loud, and sort of rattles. Mileage is 140 500 estimat...

Exhaust is not coming out of pipe as it should, loss of power, truck is quieter than usual and hisses when accelerating. help? 1 Answer

The day before this started , the truck was misfiring and there was a small exhaust leak coming from the manifold at idle. The rpm's surge while idling like it's not breathing as it should. When ...

How do I stop the hot air flow coming from drivers side when I roll down windows? 1 Answer

I replaced both actuators and heater and air conditioner both work fine and all my controls seem to be working correctly. Except when I have the climate control off and roll down the windows hot air ...