Last post on Oct 13, 2013 at 2:35 PM
You are in the GMC Safari & Chevy Astro
What is this discussion about?
GMC Safari, Chevrolet Astro, GMC Safari Cargo, Heating / Cooling, Van
#2 of 371 Smell from heater/AC?
Jun 29, 2000 (10:22 am)
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?
#3 of 371 1992 SAFARI AWD "W" MOTOR SEVERE HOT MOTOR AND HOT WEATHER DRIVEABILITY PROBLEMS
May 16, 2001 (12:48 pm)
HAVE 131K MILES ON 1992 AWD EXTENDED WITH HIGH PERFORMANCE "W" MOTOR. FOR PAST 2 YEARS, ACCELERATION/PERFORMANCE/DRIVEABILITY DETERIORATE AS OUTSIDE TEMPERATURE INCREASES. WHEN FIRST STARTING AND STILL COLD, MOTOR RUNS STRONG AND SMOOTH. AS IT HEATS UP DURING HOT WEATHER, THROTTLE RESPONSE BOGS EXTREMELY, AND AIR FLOW THROUGH VENTS DECREASES IN DIRECT PROPORTION TO ANY SUDDEN INCREASE IN THROTTLE. HAVE HAD EXHAUST SHOP DRILL HOLE AND CHECK CATALYTIC CONVERTER--CHECKS OK. HAVE SPOKE WITH NUMEROUS TECHNICIANS/SHOPS WITH NO RESULTS. IN POST #57, DECARBONIZING INTAKE MANIFOLD WAS MENTIONED, THEN REPLACING PLUGS AND O2 SENSOR. COULD THIS BE A FIX? PLEASE HELP, THIS HAS BEEN DRIVING ME CRAZY FOR 2 YEARS. DURING COLD WEATHER, DRIVEABILITY/RESPONSE STILL DETERIORATES SOMEWHAT AS MOTOR HEATS UP, BUT NOWHERE NEAR THE SAME AS WHEN OUTSIDE WEATHER IS ALSO HOT.
#4 of 371 Safari Rear Air Conditioning hoses
May 24, 2001 (9:27 am)
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?
#5 of 371 rear heat
Nov 01, 2002 (8:17 pm)
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
Nov 02, 2002 (9:00 am)
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.
#7 of 371 re;rear heat
Nov 02, 2002 (8:44 pm)
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.
#8 of 371 98 - Astro climate control problems
Nov 18, 2002 (2:19 pm)
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?
#9 of 371 98 - Astro climate control problems
Nov 18, 2002 (2:41 pm)
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.
#10 of 371 re: rear heat
Nov 21, 2002 (7:51 pm)
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.