Questions & Answers for: vacuum 2004 gmc

2004 gmc yukon Your brake booster is the heart of your power brakes. It runs off a vacuum from the intake to booster. Your brakes will still work as long as they have fluid. They'll just get stiff. It

...gmc envoy air only blows out of floor and defrost. I hear no air leak and cannot find vacuum lines from engine to firewall. Please help. Air does blow to the rear console. check you air flow position ...

...2004 safari blower is not working whenever i turn on the ac/heat it does not work in the front but the rear works fine. passenger side under dash. Your going to find two clear vacuum hoses have been ...

2004 gmc envoy xuv is idleing i put the heat on n it stalls out.why? Either you have a vacuum leak or electrical issue. First Inspect all vacuum lines. Next test engine vacuum (17-21 hg's) If all a-ok

...2004 gmc envoy 65mph for one hr it won't go over 10 mph and backfires under the hood is your "service engine soon" indicator lit?If so have the computer scanned for error codes and post it on fixya. ...

...2004 GMC Envoy. I recently changed my battery and ever since it was replaced my air conditioning hasn't worked right. It does not blow on the face, only on the feet and on defrost. Please help!! when ...

on my 2004 gmc envoy the ac heater blower works only on direction Sounds like the switch could be bad, or a problem with the vacuume system.

2004 gmc Yukon 4.8 liter engine, can't diagnose? Have a code 0300 multiple misfires (5 and 7), fuel lean banks 1 and 2; and maf sensor "out of range". Replaced sensor, all plugs and the coils on 5 and

2004 5.3 1500 These codes let you know the engine is running to lean on gasoline . May be only a plugged fuel filter or weak fuel pump. A vacuum leak can cause this problem . The engine controller may

2004 GMC Envoy XL. Do you have a Vacuum hose diagram for it please? Click on the link and then click on the Images tab. https://www.google.com/search?q=2004+GMC+Envoy+XL.+Vacuum+hose+diagram ..