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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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#141 of 145 2000 Safari cargo 'bucks' after stops after distance driving by idontdotrix Jul 27, 2009 (4:17 pm)
recently replaced the torque converter clutch when it threw that code, and still getting a code for an O2 sensor my mechanic who replaced the TCC checked and said its fine. he replaced tranny fluids n filter n said transmission looks fine. so here's the problem- starts up fine, no fluid leaks, no fluids burning. after driving distance, 45 min + on freeway without problems, and then coming to a stop (say an off ramp), when I accelerate I get this hard buck or jerk from the rear. if i stop again soon afterwards and accelerate (stop lights), same thing. if i drop it to D2 AT the stop and pull off, then shift up to D3 then D, its fine. or if I pull over, kill the engine, wait a minute or two and get back on the road, it stops.   this is driving me nuts. mech says there's nothing wrong with my transmission that he can tell, and having him drive it for awhile didn't produce the problem. he probably didn't go far enough or stay at 65-70 mph for any length of time   around town there is no problem. there's no coolant in the oil or vice versa or any other indication fluids are mixed. regular oil changes. all gauges read normal.   I was told it may be a PCV valve, something about a vapor build up or blockage. ideas, insights? thanks in advance!!!!
#142 of 145 2003 Astro Van will not back up by rob5536 Sep 21, 2009 (6:03 am)
All- I have a 2003 Astro Conversion Van that has given me great service. I had to rescue the wife from the local Walley Word parking lot where she could not get the van to move in revese, but slightly and then it felt like it was binding. I got it home replaced the fluid, filter, and substituted a quart for some lucas Transmission fix thinking that something might be sticking. I still have no reverse unless you REALLY force it, now the van will drive in neutral, but slip. I still get normal shift and can run highway speeds in drive and while doing this I tried to engage/disengage the overdrive/tow button on the shifter, but got no noticeable change in RPM.   Thanks to all for you time to read and relpy!
#143 of 145 Re: 2000 GMC Safari Passenger Van [safarifan] by 1998lincoln Nov 06, 2009 (11:01 am)
Replying to: safarifan (Nov 17, 2008 9:51 am) Sounds like your radiator is leaking water into the trans cooler side of radiator. I can't be sure because I haven't seen your radiator.Just an ideal to look at!
#144 of 145 Re: WTB Astro w manual trans... [gl0650] by 1998lincoln Nov 13, 2009 (3:33 pm)
Replying to: gl0650 (Jun 22, 2005 3:34 pm) Does your transmission come in any other chevy model? If so,which one?
#145 of 145 What type of automatic transmission does a 2001 Astro have! V6,4.3L motor? by 1998lincoln Nov 15, 2009 (9:04 pm)
I just need to know if the all astro's have the 4L60E automatic trans? my astro has no reverse and when it up shifts to high gear,it slips until I let up on the gas petal, then it goes in to high gear, and works great! Anyone have any advice? I want to pull the trans and install rebuild kit,including new bands!

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