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GMC Safari/Chevy Astro Transmission Problem

145 messages,  Last post on Nov 15, 2009 at 9:04 PM

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

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#109 of 145 Re: 2000 Astro Hard Shift [w5han] by guest5 Jan 01, 2008 (6:41 pm)
Replying to: w5han (Dec 25, 2007 2:32 pm) Same problem on my 1998 GMC Safari in 2003. Engine 1870 code. I had the valve body in the transmission updated at a transmission shop. $368.88 and the problem has been fixed for the last 4 years.
#110 of 145 drivetrain thump by blkdeep Jan 10, 2008 (5:36 pm)
#111 of 145 drivetrain thump by blkdeep Jan 10, 2008 (5:36 pm)
hey when i drive my van after about half hour and its all wamed up it starts to thumb hard it feels like its in the rear it thumps from first thru second then it goe's away in third gear it only does it when the van is hot runs great when cold i had the van check out by a tranmission guy and he said the drive train is perfect anybody have an idea of what it could be
#112 of 145 1998 safari van code 1870 by divulsionbob Feb 08, 2008 (9:06 am)
ok i have been getting code 1870. i had the filter changed in the transmission.and fluid. the next day came back on. i see someone had something done and worked for them. i cant get the light to stay off. i dont notice any change in shifting. drives great if you ask me. code p1870 still pos up
#113 of 145 Re: No Passing Gear under Hard Acceleration [aes870] by szczesny Mar 08, 2008 (7:51 am)
Replying to: aes870 (Oct 11, 2007 6:47 pm) So what did this end up being ????? I have same problem on 94 astro van....
#115 of 145 Reverse Not working by klebb Mar 07, 2008 (6:38 am)
I have a 93 astro van EXT   Just recently i am unable to go into reverse or neutral. The van will still drive and i can shift in all of the gears. When i do shift into reverse and neutral the car does nothing it just sits there and i am unable to move the van (push it). When i turn the van off i can shift into reverse and push the van. Sometimes when i have the van running and i depress the brake i hear a clicking in the steering column. Also i see no fluid leaking around the tranny, however it was about two quarts low. As of now i am thinking that i should do a filter and fluid change, but was looking for some opinions.
#116 of 145 Re: 2000 Astro Hard Shift [w5han] by davidwatts Mar 14, 2008 (9:14 am)
Replying to: w5han (Dec 25, 2007 2:32 pm) Ditto. I have a 99 Safari AWD with 113,000 miles. I bought it with 49,000 miles on it used. After reading all the people in this forum who have had the trans start with this 1st to 2nd gear thunk right at the 48,000 mile mark..well it sure makes a lot of sense that the previous owner sold the van when he was told it would need a new transmission.   I first noticed the 1st to 2nd thunk during a hot spell in August about a year after I bought it. The engine light came on after two of three thunks and this only happened after 45 min to 1 hour of driving. But I'm like you...I never fix something till it breaks especially when it's going to be the same labor job of pulling out the old trannie and rebuilding.   I just want to mention that the despite dire warnings about how the trans is "on it's way out" when I brought it a(t about 80,000 miles) to a shop in in 2005 , it is now 2008 and 33,000 miles later and I still have the same transmission.
#117 of 145 94 Astro doesn't want to upshift from 1st to 2nd by rikkilee2000 Mar 15, 2008 (2:26 pm)
The van accelerates from a stop in first gear fine but it stays in first and revs at about 25 to 30mph until you let off the gas just right then will finally up shift to 2nd then will go through 3rd and 4th ok It also sometimes clunks when put into reverse and you feel a bit of chugging backing up. Once on the freeway at 60mph the van runs fine and has power in passing gear fine as normal. Fluid looks ok but I know needs a change and filter Has any one had this problem or have any ideas   Thanks, Rick Replies to this message: nwraaa (May 08, 2008 6:51 am) w5han (May 08, 2008 7:24 am) astro95 (Aug 17, 2008 7:06 pm)
#118 of 145 cluncking noise by chinnese Mar 21, 2008 (4:03 am)

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