Last post on Oct 27, 2013 at 1:07 PM
You are in the GMC Safari & Chevy Astro
What is this discussion about?
GMC Safari, Chevrolet Astro, Van
#1628 of 1973 Re: Bad Whining Coming from Front Drive Train on my AWD Astro [jferrantelli]
Aug 17, 2007 (11:46 am)
Joe from NY
I just started 2 weeks ago to get a similar whining comming from the front end of my 2000 GMC Safari. Doesn't appear to be a wheel bearing since the whining noise stays the same in a right or left turn. I have been using a thruway on/off ramp as my gage for that since you can do about 30-40MPH. Front and rear diff are full and the transfer case is full. Transmission was rebuilt less than 3000mi ago.
Did you find the source of the whining noise?
#1629 of 1973 91 Astro 4.3 surging
Sep 04, 2007 (1:06 pm)
91 4.3. Cold it will have hesitation, surging, then the check engine light will come on, and run better, but will have a slight bucking/surging at about 45 mph. On or off the gas a touch goes away. Just did a new rotor and cap (pretty well shot). Before, had a friend toss an OBD 1 on it. 042 code if I remember correctly. Electronic spark control I think it was. I'm leaning on getting a new ECM that comes off the distributer...the 3x4 inch or so flat thing mounted on the r/s behind the motor. Might try the junkyard for another, but does anyone know the year model that would interchange? I don't see much diff, but really don't know for sure..any help appreciated! Thanks, Robby
#1630 of 1973 Re: 91 Astro 4.3 surging [cbharobby]
Sep 04, 2007 (2:22 pm)
Did a little searching, and came up with a possibilty. Code 42 "The EST signal did not change when the ECM applied bypass voltage to the ignition module."....so where the heck do I go from here? Robby
#1631 of 1973 Astro/Safari front clip
Sep 04, 2007 (6:42 pm)
I have a 1994 Astro and I need to replace the Front Clip (Hood , Grill and fenders). Does anyone know if a Clip from the 1995 models up will fit? I like the 95 and up look over the 94 and down. I realize that there would be a little reworking of the radiator etc, but If i had a donor would it work?
Any input would be appreciated.
#1632 of 1973 My 1998 Safari is setting Code 175
Sep 09, 2007 (5:12 pm)
I have a 1998 GMC Safari that started setting off code 175 (right bank is running rich) a while back. My mechanic thought that I needed to replace the O2 sensor. I replaced all 3 ($128 x 3 + sales tax) and it did not set codes for a few weeks. The code is back again and I don't trust my mechanic to do further diagnostic work. I also don't trust most repair shops or dealerships but I am afraid that I will have to break down and take it in. Can anyone here recommend a repair shop or dealership in Houston, TX.
#1633 of 1973 Re: 87 astro Running Problems [rsj428]
Sep 16, 2007 (11:25 am)
I am having pretty much the same problems with my 92 safari awd. It will start and run fine but when you drive it stalls out. It then needs a bit of time to cool down.
Iv had a pressure test on the fuel pump, new fuel filter, new plugs, wires, coil, ignition modual, distriutor and rotor, but nothing has helped. Does any one have any ideas that could point me in the right direction please???
#1634 of 1973 Re: 87 astro Running Problems [burt7]
Sep 16, 2007 (2:00 pm)
I took my Safari in to an independent shop and they scanned it and said there was nothing wrong that it would set the code and then remove them within a few minutes, that it was an intermitent problem. Your problem is different than mine, I have no stalling problem and you have an OBD I emissions system and I have an OBD II system which operate differently. You need to take it to someone that can provoke the symptons and then fix it.
#1635 of 1973 Re: 87 astro Running Problems [burt7]
Sep 17, 2007 (6:49 am)
My 1995 with 260000 did that also and one thing to check out is the coolant temp sensor if yours had one. The reason I say this is because these vehicles being general motors also I find have "general parts" from the parts bin at build time so I sometiomes don't find the part on my vehicle.
Here is my problem also. No brake lights when peddle is pushed. I replaced the brake switch and still no brake lights. I read on another site about the "Multi-Function switch" needing to be replaced but what is confusing to me is the Haynes manual descibes replacing the "MultiFunction switch lever".Is this attached to the MF(this is about how I feel about this van at the moment and why it is for sale ) switch? This makes some sense because when I press the brakes with the blinker on the radio blinks but the lights don't blink on the driver side. Also the high mount(3rd) brake light goes out but when the right turn signal is selected the 3rd light come on. So some "multi functions are out of whack it seems.
This van was broken down and I was at teh end of my ropoe and paid a guy $200 and was told he "wired it up right". Its running but has no brake lights. I am about to go back to him but would like to know if anyone has any ideas about the MF switch; its location and removal/replacement?
#1636 of 1973 Astro 2001 - Rear End Thump
Sep 18, 2007 (4:27 pm)
I have a 2001 Chevy Astro 2wd w/ 55,300 miles
I recently had the rear end replaced due to a bad diff (as per mechanic). There was a constant noise coming from the rear when I accelerated. Now I'm getting a thumping sound from the rear when I release the brake after stopping. I've been back and forth w/ the mechanic as he does not seem to know what the problem is. First he thought and still thinks its the brakes not releasing properly. I think it may be a bad rear end from the salvage.
Can anyone provide guidance as it's getting riduculous going back and forth to the mechanic.
#1637 of 1973 Re: Astro 2001 - Rear End Thump [astrovette]
Sep 25, 2007 (12:55 pm)
Actually, from the sounds of things, your rear brake isn't releasing. And although you didn't specify a side, I'll tell you I'm 98% sure it's the passenger side rear. And you may be able to get your mechanic to fix it, but it will probably come back. Not sure why, but believe me, after owning GM cars since 1984, I haven't really found any (other than the smaller cars cavalier, sunbird, etc.) that didn't have this problem. I have 2 1994 Astros and a 1995 Safari and guess what, they all have the same problem. Not your rear end though, not in my opinion.