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GMC Safari/Chevy Astro Heating / Cooling

237 messages,  Last post on Nov 19, 2009 at 8:56 PM

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What is this discussion about? GMC Safari, Chevrolet Astro, GMC Safari Cargo, Heating / Cooling, Van

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#234 of 237 Re: bad vacuum lines on 94 safari [Charlie_UT] by bdar Oct 04, 2009 (11:18 am)
Replying to: Charlie_UT (Oct 02, 2009 6:36 pm) Hi Charlie_UT,   Thanks for getting back to me on this. I really appreciate it. i am sorry that I didn't get to respond back sooner, but it has been a busy week! From the vacuum diagram that I have, I took a look at things and it indicates exactly what you said, that the vacuum lines run into the wiring harness. But my question is, how do you get to the wiring harness?? Mine in my 97 Chevy Astro seems buried between the firewall and inside panel of the car and I cannot see a way to get to it. I checked beside the battery and I don't see anything visible as far as the wiring harness. There was one tube that I was looking to replace and it was sticking out of the firewall right beside the accumulator (it was a very short tube that I assume connects into another tube that goes somewhere into the wiring harness) and so I replaced it and although it helped a little, the air is just coming out weak and not like is used to before.   So I assume that this is the problem that I have and I am just about ready to not care anymore about trying to do it myself. However, I truly think that this is ridiculous and I did talk to my attorney this week about possibly filing a class-action lawsuit against GM since it is clear that some many thousands of people have had the same vacuum line issue and I truly feel like there should be a recall on this or at least should have been. He is looking into it but suggested to me in the meantime to call up GM and inform them of the issue and just how many people out there are having the same issue and threaten to sue if they can't do anything about it and then see where it goes from there. I am not sure if that will get me anywhere with them, but it won't hurt to try and the worst that they could do is say we don't care go to H*ll.
#235 of 237 vacuum diagram by robby_6ft5 Nov 07, 2009 (4:23 pm)
well if you dont mind can you try to send me the diagram for the vacuum you can try to send me it if you want it will surely com in handy for myself if it is to much trouble.
#236 of 237 Heater A/C Problem by lanceosh Nov 19, 2009 (2:50 pm)
I had a problem getting the Heater A/C working properly in my 1998 Safari. Took it back to the dealer who put in a new control (The one with 3 holes attached) now I get all kinds of air to the various areas and I can get the A/C to work BUT absolutely nothing beyond a luke warm(cold) air when the heater is turned on. Living in Canada we need a properly running heater in our vans! Now the dealer is suggesting the thermostat may be stuck and wants to replace it (of course at my cost) Could this also be a vacuum problem? Replies to this message: duecekd (Nov 19, 2009 8:56 pm)
#237 of 237 Re: Heater A/C Problem [lanceosh] by duecekd Nov 19, 2009 (8:56 pm)
Replying to: lanceosh (Nov 19, 2009 2:50 pm) I would say their right in checking the thermostat first (of course after you have checked your coolant level to make sure it's not low). You may be able to find out if it is the thermostat by following the top radiator hose to the engine block. It should be clamped to a domed housing that the thermostat is inside of (depending on your van, you may need to remove the air cleaner housing).    With the engine running and up to temp, and making sure to watch out for the fan and serpentine belt, take a LARGE screwdriver or something else stout and tap on the outside of the housing. Give it a good tap, but don't hit it hard enough to break the housing. Note your water temp if you have a gauge on the dash, and see if it doesn't jump up after doing this. You may want to try a few times. I have had this work in a pinch, and if the thermostat does unstick (if that's a word) your heat should work better. If this works, it also means the thermostat does need to be replaced. Good Luck!!

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