Question about 1994 GMC Safari

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What vacuume line do I use to pour seafoam into on a 94 gmc safari

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Pour right down the carburetor slowly while engine is running at high idle

Posted on May 17, 2017


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1992 GMC Safari Van 4.3 V-6 Engine. Will not come up to idle and dies with-in 3-5 min.

Sounds like throttle body and/or its components,"IAC motor-IdleAirControl motor, TPS-ThrottlePositionSensor. Throttle body/Carb cleaner and SeaFoam @the brake booster.

Dec 17, 2016 | 1992 GMC Safari

2 Answers

How can I get my 1999 Honda crv to get sensors ready to smog

what do you mean? do you have a check engine light on?

Apr 04, 2015 | 1999 Honda CR-V

1 Answer

1999 gmc safari blower motor works perfect but no air comes out of the ac vents only defrost vent works

you have a sucked shut or broken vacuum line under the hood somewhere. mine was burnt and broke, same problem. it is a little, skinny, hard vacuum line from left side of motor over to right across the front.

Jul 10, 2011 | 1999 GMC Safari

1 Answer

I have a 94 GMC safari with 295K on it. I let an oil change go a year and thought because it was around town it wouldn't burn much, well I had about a litre of oil left, changed filter and oil and changed...

The loud knock you here is a bering knock.(not good)By letting oil change go so long i would assume you have caused internal damage.And you say your oil pressure is 275 psi should be around 25 to 50 psi .Bering can't last long without oil.

Feb 10, 2011 | 1994 GMC Safari

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I have a 97 gmc safari. AC control is stuck on defrost. AC runs cold but will not switch from defrost to vents even when changing knob position. Any ideas what could be wrong?

The HVAC system uses engine vacuum to open and close the blend doors. Check for a broken vacuum line in the engine compartment. It will exits the firewall left (passenger side) of center and will be a hard plastic line. With age and exposure to engine compartment temperatures they become brittle and break. It can be repaired with a rubber vacuum line that fits snugly over the line to reconnect them.

Aug 07, 2010 | 2001 GMC Safari

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SeaFoam in my 94 Cadillac Eldorado. Bad idea!

I doubt the Sea Foam had anything to do with that. I'd check for a vacuum hose off, especially by the PCV valve. Maybe a broken hose or the PCV valve itself might be stuck. Maybe just put a new one in, they are not that spendy. No vacuum would explain the brakes not working.

Jan 31, 2010 | 1994 Cadillac Eldorado

1 Answer

My gmc 2004 safari blower is not working

passenger side under dash. Your going to find two clear vacuum hoses have been knocked lose "likely by someones feet." simply reconnect the vacuum hoses together . Problem solved.
The blower switch is controlled by a vacuum line..
let me know if this helps....

Aug 08, 2009 | 2002 GMC Safari

1 Answer

A/c control for dash

If you only get air blowing from the defrost & foot level vents check & replace the hard plastic vacuum lines under the hood with rubber vacuum line. That will fix your problem

Jun 23, 2008 | 2001 GMC Safari

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