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Old 07-04-2009, 07:49 AM
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1983 chevy silverado MAJOR transmission problem ?

i own a 1983 chevy silverado pickup with a 700r4 auto transmission in it. i was on my way home from the mountains when i ran into some problems. i was going up a pretty steep incline when the transmission just slipped out of gear and just started revving. i think i was in 3rd. so i stopped on the side of the highway and figured it might just be a one time thing... so i drive off. it shifts HARD into second then when it tries to shift into third it just revs... i pulled over and thought maybe i needed some tranny fluid but it wasnt that low... maybe a quart... which isnt too much... i think i got a major problem here... but any help would be appreciated. the thing is that i just put this transmission in about a year and a half ago... it doesnt have but 20,000 miles on it since its been rebuilt... any help or insight you could give would be greatly appreciated. feel free to ask questions and ill do my best to give an answer.

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Old 07-04-2009, 05:47 PM
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Hi,
Time to rebuild again, you've burnt the 3-4 clutch pack out,
don't run a transmission low on fluid.
Rich
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Old 07-04-2009, 09:06 PM
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trans problem

yup...you blew high gear out. Had the same thing happen to me a few years ago. had to drive home 40 miles in 2nd gear at 25mph.
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Old 07-04-2009, 09:08 PM
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trans problem

I would seriously look at buying a tranny from GM. You get a 3 year, 36,000 mile warranty...unless they have increased it. It would be $2000 or so very well spent.
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Old 07-04-2009, 09:13 PM
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ok, thanks for the info guys. i will definatly look into your suggestions. this truck is turnin into a money pit...
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Old 07-04-2009, 09:40 PM
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If its not your only vehicle, I would consider a 5 speed swap. There is a good tech on www.67-72chevytrucks.com on the nv3500 swap
Shane
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Old 07-05-2009, 08:09 AM
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Without question the third gear clutch pack is gone. What the rebuilder no doubt failed to do is replace the steels with thicker aftermarket ones which don't warp as the factory ones tend to do also it tightens up the clearances too. Also the 700s suffer from low line pressure and a correction package cures this by replacing the weak stock spring that's located in the front pump. Don't give up on this unit it's a good transmission it just needs proper building and upgrades.
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Old 07-05-2009, 10:22 AM
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ok ill see what i can do with it. i didnt rebuild the transmission but ill see if i can get in contact with the person who did and see if we cant fix this thing... thanks for everything guys

-Jay
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Old 08-12-2009, 06:49 PM
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bad news, truck is still out of commision... im tryin to scrape all the money i can out of everywhere i can...
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