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Author Topic: 85 k20 slammed into reverse - Now with edits!  (Read 8178 times)

Offline joedapper

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85 k20 slammed into reverse - Now with edits!
« on: April 17, 2009, 02:17:43 pm »
OK, don't flame me but i went through as much of this section and i could not for the life of me find a thread that could help.

Here is my situation:

I have an 85 k20 th350 all that good stuff.  Went to pull forward the other night and as i passed through R the whole truck jolted backwards..i thought nothing of it, i figured this old truck shifts hard.  But then when i got to the end of the drive i went for R and it wasnt there.  Is my trans shot?

EDIT:
Well, i found a th400 out of a van but im worried about how the splines will work coming out of a 2wd van into a 4wd truck. 
« Last Edit: April 24, 2009, 01:44:48 pm by joedapper »
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Offline choptop

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Re: 85 k20 slammed into reverse
« Reply #1 on: April 17, 2009, 08:46:13 pm »
Did you check the trans fluid level?? If its full then it is possible the tranny went south.
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Offline Irish_Alley

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Re: 85 k20 slammed into reverse
« Reply #2 on: April 18, 2009, 02:25:41 am »
just don't drive anywere that you need to back up ;) you be OK
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Offline Lt.Del

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Re: 85 k20 slammed into reverse
« Reply #3 on: April 18, 2009, 10:40:55 am »
Quote
just don't drive anywere that you need to back up  you be OK

We are full of advice here, aren't we? ;D
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Offline VileZambonie

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Re: 85 k20 slammed into reverse
« Reply #4 on: April 18, 2009, 10:54:07 am »
Check the fluid level. If ok check your linkage adjustment. If ok drop the pan and inspect. check the operation of the manual valve. Let us know what you find.
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Offline 80stepsideguy

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Re: 85 k20 slammed into reverse
« Reply #5 on: April 18, 2009, 11:24:40 am »
Once he drops the pan it`ll be like he hit triple 7s on a slot machine lol...... ;D

thanks
pat
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Offline Irish_Alley

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Re: 85 k20 slammed into reverse
« Reply #6 on: April 18, 2009, 11:14:27 pm »
Quote from: 80stepsideguy on April 18, 2009, 11:24:40 am
Once he drops the pan it`ll be like he hit triple 7s on a slot machine lol...... ;D

thanks
pat
yeahhhhhhh i win
had a Buddy i forget what car he had but it was a small car, he lost reverse and some of his friends played jokes on him he would park it in the middle of a parking lot so he can just pull out. well they lifted it up and drug it to a curb were he would have to back out of. ::)
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Offline joedapper

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Re: 85 k20 slammed into reverse
« Reply #7 on: April 21, 2009, 12:08:59 pm »
Well i haven't checked the fluid level yet but i'm pretty sure its gone.  Does anyone have any experience with autozone rebuild kits? Im going to do this myself and i cant afford to buy junk parts but i cant afford to buy the super duper ones either.  So the zone is at 56$ and NAPA is at $139, as far as i know neither have the new reverse band so ill need one of those too, $25 on ebay. Then im sure ill need a whole bunch of tools that i dont have ~ another $100.  and thats not too bad considering some of the posts ive read in the past few days of people getting quotes were always at least $500.  Wish me luck.
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Offline VileZambonie

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Re: 85 k20 slammed into reverse
« Reply #8 on: April 21, 2009, 04:17:50 pm »
Why don't you check the fluid level and do as everyone recommended first before you start spending money on parts and tools you may not even need.
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Offline Irish_Alley

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Re: 85 k20 slammed into reverse
« Reply #9 on: April 22, 2009, 04:40:54 am »
Quote from: VileZambonie on April 21, 2009, 04:17:50 pm
Why don't you check the fluid level and do as everyone recommended first before you start spending money on parts and tools you may not even need.
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Offline eventhorizon66

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Re: 85 k20 slammed into reverse
« Reply #10 on: April 22, 2009, 10:49:13 am »
Buying a rebuild kit before pulling out a dipstick  ::)
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Offline 78 Chevyrado

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Re: 85 k20 slammed into reverse
« Reply #11 on: April 22, 2009, 11:05:00 pm »
last time I did that to one, I lost reverse, 2nd gear and 1st slipped bad.  though I was backing up a hill floored with a load and knocked it into drive by mistake... ::)
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Offline Irish_Alley

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Re: 85 k20 slammed into reverse
« Reply #12 on: April 23, 2009, 04:49:15 pm »
from what i can remember reverse is the first to go when you lose your tranny fluid
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Offline joedapper

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Re: 85 k20 slammed into reverse - Now with edits!
« Reply #13 on: April 24, 2009, 01:38:14 pm »
I have checked the fluid, its fine. It was just a little low so i added some fluid and still no help.  I have all forward gears still just no reverse.  So i found a th400 but its out of a van, id like to go get it tonight but im worried about the splines and if it will bolt up to my np203?
« Last Edit: April 24, 2009, 01:45:31 pm by joedapper »
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