2000 Pontiac Grand Am GT "vacuum" Questions

...on face and heat only. Selector won't change setting to defrost, face only, etc. The mode switch is vacuum controlled , do you know anything about vacuum controls , how to test vacuum circuits ? here ...

...the radiator it worked for a min now its back to blowing cold air. You could have a bad (broken) vacuum line going to the dashboard area from the engine compartment. These cars use vacuum to open ...

tranmision on 2002 grand am started shifting hard only 50,000 If your unit has a vacuum modulator on it (small can with a vacuum line on radiator side of trans) check that the vacuum hose has vacuum ...

.../ uneven idle problem can cause by a lot of components. Dirty air filter Dirty injectors + o-rings Vacuum leak at intake manifold and vacuum hose. Bad Idle Air Control Motor (IAC) Low compression ...

...It is most likely under the hood, on the front side of the transaxle. It may have a 3/16 dia. metal vacuum line from the intake manifold down to it. The line has rubber vacuum hose on both ends. ...

...95 grand am...but the heater works great...help the mode switch may be the cause, it work on engine vacuum. check all the vacuum lines connect to it. if the vacuum line connects to the defrost ...

...Only settings vehicle will allow are hot or cold. Vaccum leak? I would say it has to be a vacuum leak. The reason i'm thinking this is because the HVAC controls uses no electrical wires the ...

I have a 2001 pontiac grand am and my car makes a vacuum noise when i put on the brakes and the brakes go to the floor and then my abs, trac off and service vehicle soon light comes on. Does that mean

no cold air coming out 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 of the inner fenders. Trace the lines back to the ...

...repair shop . EVAP Leaks P0442 and P0455 The evaporative emission system is tested by applying vacuum to the EVAP system and monitoring for a vacuum decay. The PCM monitors the vacuum level ...