20 Most Recent 2000 GMC Yukon - Page 3 Questions & Answers

Check the connections on the back of the instrument cluster. Also check any bulbs on the back of it for failure

It should be in With the fuse block inside of the vehicle

yeah, I think you have known what is the problem that caused the fault code._____________launch x431 diagun

your assuming is bang on wright

Do you have a cabin air filter? Consult your owner's manual for location. The filter may be plugged, also check at base of windshield for something blocking the air intake to the system like leaves or paper.

Seafoam

blow that dang truck up

the idle air control (IAC) probably needs removed and cleaned. this is what controls idleing on most vehicles now days. but do not put entire unit in any liquid. use an old tooth brush or similar to clean the carbon from it, also be sure where it mounts is all clear.(use aerosol carburetor cleaner) The throttle body of your engine controls the secondary air intake for the engine. The throttle body becomes dirty with air contaminants that the air filter cannot keep out. This condition is called "coking" and can cause stalling as well as lower the engine idle. clean out throttle body and throttle plate very good. especially on the sides of the throttle plate where it will stick. good-day !

I will need more to begin with on the problem. Does the light on the dash work when the button is pushed in. If not it could simply be a fuse. One other issue on these is the selenoid that engages the 4wd unit in the transfer case. How does it act when you select 4wd?

you need to scan the codes to figure out whats going on

Heater core is probably plugged, or the blend doors are stuck. check the in and out hoses on the fire wall

make sure you are getting consistant spark