1998 GMC Envoy Questions

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My truck started to overheat, someone told me I needed antifreeze so after adding antifreeze it started to leak from underneath on driver side of vehicle. Why is that? Will it affect me driving?
JUST STARTED,WENT TO THE STORE AND PARKED. CAME OUT STARTED IT AND WOULDN'T SHIFT PLAYED AROUND WITH IT AND GOT IT TO SHIFT. BROUGHT IT HOME AND PARKED. TRYED TO SHIFT IT OUT OF PARK AGAIN. SHIFT LEVER WOULD NOT SHIFT...
My vehicle has fuel, will crank but not start. I hear the fuel pump kick in when I turn the key. Had the battery checked and ruled out. Is it the fuel filter or fuel pump?
one thing tho it is always throwing hot air no matter what! there is no owners manual to it so i'm lookin for suggestions. also does anyone else have trouble with thier gas gage alll the time? what maybe causing that?...
i have a jerking feeling at 2000rpm and a random misfire codes #2 and a 1890 transfer case code I've replaced plugs,wires,rotor,cap,coil,air filter what is going on
I have an anti-freeze leakage that seems to be coming from the top of the engine near the carburator and runs down the back side of the engine. I can't see where it's coming from. What could be causing this leak? Engi...
my 1998 rear air compresser stays on and my service engine light stays on how do get the rear air compresser off and light
my 98 envoy occasionally makes a grinding noise from the front of the car i was wondering what that could be?
where is the oil pressure switch located on the 1998 gmc envoy
where can i locate the oil pressure switch?
what is the normal pressure of gas fuel coming out of tank
how hard is it to install
my built-in air compressor doesn;t work and i want to know where it is and see if i can fix it if there is a manual that would be great or pictures would do it too
I'm having problems with my A/C compressor clutch engaging. Sometimes it does and sometimes it doesn't. I can spray brake cleaner on the front and back sides of the clutch and it seems to work for a day or so. Do y...