1998 GMC Sierra "leaking high" Questions

...high mileage Fully Synthetic that has additives that help protect and close up an leaking seals? It's not good to Switch back to Regular oil after using Synthetic. Use the High Mileage oil. It will ...

...leaking on the inside on the driver side firewall. Looks to be coming from where the brake peddle presses into the hydro boost. your high pressure line is rotted out,replace it The power steering ...

i hit a deer and the body shop replaced the condenser and when they charged the system it leaks around the orifice where they put the refridgerant in. do you charge this system on the low or high side

98 GMC 5.7L high idle and strong suction on oil filler cap High idle usually indicates a vacuum leak, you may have one of the smog hoses disconnected, that would also cause a suction at the filler cap

...on these trucks with high milage. to see if your intake is leaking spray it down with Brake cleaner and if it is leakin you will hear a drop in Rpm's hope this helps please rate me Thank you ...

...leaking at the manifold coolant can be drawn into the cylinders and go out the exhaust. Other possibility is blown head gasket, cracked cylinder head or cracked engine block. The reason the heater is ...

I have a high idle and the computer hasnt thrown a code. How do I fix this or what all could it be? I also hhave a sunpro tach and dont know what to hook it up to....? if u own a 1989 sierra u dont ...

I know What the codes mean and how about going to fix them but will that also cure the high idle speed of 1600 rpm in neutral also the hose that goes from the air intake to the passenger side valve co

cooling fan relay location on a 2005 gmc sierra truck is over heating and blowing hot then cold air. I can keep it from over heating if i turn my heater fan on high. If air is hot then cold it sounds ...

...leaking at an idle,it must only leak at high RPMs when the oil is flying around in the pan,you might have good luck on a hoist and take it thru the gears and get it up to forty mph, double check your ...