...the gas just a little ,,,,, i dont know what to do please help if your car is a manual then your d-vac is low if your car is automatic then either your transmission is going or its low on motor ...
E-vac system on fuel tank code # P0452 2004 GMC Envoy P0452 = Generic Evaporative Emission System Pressure Sensor/Switch Low Input. Since you have a 2004 Envoy, you probably have the dreaded bad 2004 ...
...air is directed to different places by the doors in the duct work..and these door are actuated by vacuum..and you might have a hole in a vac line or the vac line came off of a diaphram or a
why does my truck stall when i turn the heat on when its in park check vac.hoses on your temp. switch at the dash & the heater diaphragm on the pass. side firewall or ...
Air not blowing from top vent of 2002 gmc envoy Air will not bow from dash vents you have a bad vac. line to the hvac system
...that activates a control cable that engages and disengages the front diff. I believe it works on vacuum and is on the passenger side near the front. Find out where that is on your vehicle and
...light or when turning a corner slowly, battery didnt help the problem. sound to me like a manifold vacume problem. your enviroment control is ran by vac and vac leak or low vac will create a stall ...
Question about 2003 Envoy
...WOULD START WITH A PC SCAN FOR CODES, EMISSIONS TEST & FUEL PSI CK. IT COULD BE AS SIMPLE AS A VACUUM LEAK. THAN SCAN PC FOR CODES (TPS, IDLE SPEED SOLINOID. OR RUNS LEAN OR RICH- VAC LEAKS AIR/ ...
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