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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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#196 of 237 Re: UPDATE 97` Astro Heater problem...help! [caliastro97] by caliastro97 Feb 11, 2009 (7:42 pm)
Replying to: caliastro97 (Feb 08, 2009 8:07 am) just in case anyone is interested, I changed out the 4-way heater control valve which did get the heater & AC working again but,..now the temp gauge shows the motor to be over-heating, climbing well above 210 & gradually climbing, I checked the heater core for plugging prior to replacing heat-valve & water seemed to flow freely when added to low or high lines when using garden hose, new thermostat prior to this, one thing I did notice that the hose from the thermostat-to-radiator does not get as hot as quickly like it did prior to replacing heat-valve, the water pump(if I remember right) was replaced a few years back due to failure but no problems since w/overheating.. could the water pump already be malfunctioning? I`m running into one problem after another with the cooling system since I started swapping out the vacuum lines to get ac & vents working... could use some advice or info if anybody has had similar issues. Thank`s!
#197 of 237 resistor by fixer5 Feb 12, 2009 (6:16 pm)
can anyone tell me where is located resistor for chevy astro van 1997 thenks Replies to this message: tstorm (Feb 13, 2009 5:18 am)
#198 of 237 Re: resistor [fixer5] by tstorm Feb 13, 2009 (5:18 am)
Replying to: fixer5 (Feb 12, 2009 6:16 pm) Yes the resistor on your Astro van is under the hood on the left side against the firewall. You will have to take out your wiper fluid / coolant resivour to get to it. There is a wiring harness that conects to it with five or six different colored wires. You unclip the harness and there are two bolts on either side of the resistor. If your having problems with blower motor speeds chances are the harness is melted. I think the blower motor does not work efficently and draws too much power causing the harness to melt. I replaced the blower motor, the resistor and the harness just to make sure the problem was resovled and I didn't burn up another harness or resistor. Of course you can get all three parts at the dealer but to save money I bought the resistor and blower motor at a local auto parts store. I could only find the resistor at Autozone, unless you go to a junk yard the harness will have to be bought at the dealer. The harness comes with a splicing kit. You will need to cut off the old harness and crimp the new harness on. You have to melt the plastic around the connections and electrical tape when done.
#199 of 237 thenks \for advise by fixer5 Feb 13, 2009 (8:29 am)
thenks you for advise { resistor} it is helpfull
#200 of 237 98 Chev Astro AWD heat/ac stuck on defrost & rear heat blowing cold air by des10 Feb 19, 2009 (11:08 pm)
Hi, I have a 1998 Chevy Astro Van AWD, and the heat and ac is stuck on defrost. Also my rear heat stopped working shortly afterwards and just blows cold air. Please help me out. Replies to this message: tstorm (Feb 20, 2009 6:54 am)
#201 of 237 Re: 98 Chev Astro AWD heat/ac stuck on defrost & rear heat blowing cold air [des10] by tstorm Feb 20, 2009 (6:54 am)
Replying to: des10 (Feb 19, 2009 11:08 pm) As far as your heat being stuck on defrost I'd guess that you have a problem with your vacume lines. They typically get old and crumble especially where they come close to the heat of the engine. Replace or repair the vacume lines and that should fix your control problem. Not sure about the rear heat thing but vacume lines could be the problem there too.
#202 of 237 95 astro awd warm up problem by mcomplicated Mar 01, 2009 (11:04 pm)
I have two 95 awd astros. They both give me the same problems. At 10 degrees f they take a half hour to get to operating temp. I replaced the thermostats with 195f and did not help. The older astros that I've had I never had these problems, but they did not have the oil coolers. Could I bypass the oil cooler for the winter to help them warm up quicker?
#203 of 237 Re: 2003 ASTRO VAN BLOWER MOTOR [bassman3112] by edcny Mar 24, 2009 (2:56 pm)
Replying to: bassman3112 (Dec 10, 2008 8:25 am) The blower motor is under the hood on the pass side. You have to remove the wiper and radiator bottles and also the head light, then take out the 7 bolts that hold the blower motor in. Lastly you have to remove the squirrel cage (using an allen wrench) before the motor will come out.
#204 of 237 bad vacuum lines on 94 safari by sdrori Apr 09, 2009 (1:14 pm)
Hello My vacuum lines are dead. The ball is broken and I have no idea where to start? Is there a place where I can find a diagram of the vacuum lines and also where can I buy new lines to replace the old ones? What happens in my car (94 safari 4.3l) is that the heating and cooling goes to the defrost position when I accelerate and I have no cruise control. The ball is there but not connected to anything. Any help would be appreciated. Shai Replies to this message: iambyteme (Aug 07, 2009 5:57 pm) aquarian1000 (Sep 21, 2009 3:52 pm) duecekd (Sep 21, 2009 5:45 pm) and 6 more...
#205 of 237 95 Astro: At first no blower now?? by breezi Apr 17, 2009 (3:25 am)
I have a 95 Astro I bought last year, high milage, in January heater blower would work sometimes but most of the time not. From what im getting from this sight that could be the vacuum lines.Would that not being fixed lead into other problems? Yesterday headin back to work on lunch van started to make noises then a burning smell. I got it back to the work lot and there it sits.I have never seen it over heat and although it was smouldering something it never lost any fluids. Seems to be coming from the pulley's. One person took a quick look and suggested that it is the A/C compressor? I'm really hoping for a less expensive answer if there is one. Found this sight last night and want to say thanks to all that help with the good advise! Replies to this message: tstorm (Apr 17, 2009 4:51 am)

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