...split causing a bad air/vacuum leak. Sometimes in older vehicles the rubber diaphragm inside the brake booster can perish and split allowing excessive air through the booster into the inlet ...
Error code P0174.What the heck would that be `? PCM software needs to be updated Vacuum leaks (Intake Manifold Gaskets, vacuum hoses, PCV hoses, etc.) Mass Airflow Sensor (MAF) Plugged Fuel Filter or ...
My A/C will only blow through the defrost. I have a 2003 yukon XL. The back A/C works fine. it is vacuum controled and when the controls on the dash recieve no vacuum, the system defaults to the ...
...vacuum leak. If the vehicle is over 15 years old, replace all under-hood vacuum hoses. You can find a vacuum leak by spraying carburetor cleaner on all vacuum connections with the engine running. The ...
my 2004 denali does not blow air thru the vents. what could be the problem It sounds like vacuum is not getting to the vent, heat and A/C controls. Find the vacuum can. It may be under the hood on one
rough idle and engine vibraton Some gaskets have been known to fail and cause vacuum leaks, it happened on mine. I took it in to have them checked/replaced.
...the actuator is bad or you have a vacuum leak. Check line under hood which goes to vacuum reservoir for vacuum, and check one way valve(check valve). Replace any old soft or cracked vacuum
Question about 2001 Yukon XL
...which direct the air flow are all controlled by engine vacuum which is piped through a one way valve (check valve), then into a vacuum resivoir, then to dash. Any leak in vacuum will cause this
no air blowing out front vents,, back vents only... which a/c fuse is too control vents.. Not a fuse issue. Likely blend air door actuator failed or vacuum leak.
Question about 2004 Yukon XL
...in the fuel pump itself. The regulator does not come into effect until the engine is running and a vacuum supply is produced to it. If the regulator is leaking internally, it could send fuel back to ...
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