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Vans & Minivans GMC Safari & Chevy Astro GMC Safari/Chevy Astro Heating / Cooling
237 messages, Last post on Nov 19, 2009 at 8:56 PM
You are in the GMC Safari & Chevy Astro Forum. Your Host is Karens
I have a '94 Astro bought used a year ago. Took it on a 3000 mile round trip last summer with no problem. Now has 45K. A week ago suddenly there was a smell (intermittent) coming through the vents from the engine when the fan is in the "VENT" position. Does NOT happen with AC on. Oil, trans, coolant levels all OK. Thought maybe it was a refrigerant leak on the engine. Took it to a Chevy dealer, who could not duplicate the condition. (Told ya it was intermittent.) NOW it appears that maybe the smell wasn't coming through the vents (though I could have sworn it was), because I caught a little wisp of smoke coming from the fan switch. Dealer's electrical expert says nothing to worry about, could just be dust on the switch. This is a reputable dealership that says they try to avoid unnecessary parts replacement & expenses. I'd like to resolve this before taking another long trip next month and am strongly leaning toward replacing the switch, anyway. Feedback? Similar experiences?
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Replying to: bax (Jun 29, 2000 10:22 am) |
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1996 Safari I had to have the rear ac hoses replaced. Now 14 months later the hoses have worn out AGAIN! Anyone had this experience? I feel that GM should pick up the bill since it is a design flaw. I am tempted to have them disconnect the rear air all together, but that would leave me with an option that I paid for and cannot use. This Safari van as far as I am concerned is a piece of junk. Any time the Service Manager is involved he is able to snake his way out of the issue. Here is a breakdown of the service I have had since buying the van in 1997: 33K - Hatch struts - covered under warranty 34K - replaced front end shock - warranty 34K - roof gasket - warranty 45K - front end tighten loose transfer mount bolts - no warranty 45K - Front end problems again(shimmy) replaced brake pads - no warranty 45K - O2 sensor - extended warranty 62K - AC blowing cold rear ac hoses replaced - no warranty 62K - Drivers side power window bad - no warranty 65K - Idler arms replaced after eating tires - Extended warranty 68K - Heat Control Valve - no warranty 76K - Replace passenger door handle and latch - no warranty 78K - Ac bad again....... Is this typical for a GM vehicle?
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| hi,do any of you have rear heat that stays cold?i have a 96 astro with rear heat and a/c.the heat is as cold as a/c.i tried cracking the lines leading to the rear heater core to see if there was air,but it wasnt.the front heat works fine.is there a valve,switch or anything that controls the flow of antifreeze because it was cold coming out the lines when the front was hot | |
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Yes, at least on my '95 there was a heater control valve mounted just above the transmission. Follow your water lines from the heater core and you will find it. On mine the opposite was true. Heat all the time. The vacuum line from the switch was pinched off and the thing stayed on for years. The dealer told me it was supposed to stay on. Idiot. By the time I figured out what was happening, the vehicle was well out of warranty, the valve was stuck in the open position, and a replacement was only available from the dealer for $75. So, I just took out the valve and went to straight heater hose. Figure I lived with it for four years, I might as well continue. Another option is to get a cable controlled heater valve and install it in place of the vacuum unit. Then use a decorative choke pull off mounted to the heater box and run the cable to the valve. You will be able to turn the water on and off from the drivers seat, or the rear seat passenger can do the same. Jim |
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| thanks.i saw a valve just under the a/c box with about three heater hoses and it has a vacuum line as well as an electrical connection.i was checking it out in the cold last night so all i checked was if it was getting juice,and it was.i didnt check the vacuum.its kinda tight in there. | |
| Hope someone maybe able to suggest a solution to my problem? The climate control is "stuck" on the defrost duct work only. That is I can not get the air to flow out of either the foot vents or the face vents. The AC and heat work but only come out through the defrost vents. Not sure if it is the control knob or possibly a pnuematic control valve under the dash? Any thoughts would be helpful? | |
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You have a vacuum leak in the controls. Could be as simple as a line came off of the control, or the vacuum line or canister is leaking under the hood. Classic vacuum problem. Jim
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| I have the same problem with the rear heater not putting out any heat. A valve has been mentioned near the A/C Unit. I believe I have found where the three hoses come together. I was wondering if you, BIGGR, found the problem and were able to fix it? Also, do you have to go from under neath to get to the valve? Thanks in advance. | |
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