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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: joedapper on April 17, 2009, 02:17:43 pm

Title: 85 k20 slammed into reverse - Now with edits!
Post by: joedapper 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.
Title: Re: 85 k20 slammed into reverse
Post by: choptop 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.
Title: Re: 85 k20 slammed into reverse
Post by: Irish_Alley on April 18, 2009, 02:25:41 am: just don't drive anywere that you need to back up ;) you be OK
Title: Re: 85 k20 slammed into reverse
Post by: Lt.Del 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
Title: Re: 85 k20 slammed into reverse
Post by: VileZambonie 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.
Title: Re: 85 k20 slammed into reverse
Post by: 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
Title: Re: 85 k20 slammed into reverse
Post by: Irish_Alley 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. ::)
Title: Re: 85 k20 slammed into reverse
Post by: joedapper 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.
Title: Re: 85 k20 slammed into reverse
Post by: 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.
Title: Re: 85 k20 slammed into reverse
Post by: Irish_Alley 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.
(http://www.naioa.com/v2/modules/Forums/images/smiles/iamwithstupid.gif)
Title: Re: 85 k20 slammed into reverse
Post by: eventhorizon66 on April 22, 2009, 10:49:13 am: Buying a rebuild kit before pulling out a dipstick ::)
Title: Re: 85 k20 slammed into reverse
Post by: 78 Chevyrado 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... ::)
Title: Re: 85 k20 slammed into reverse
Post by: Irish_Alley 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
Title: Re: 85 k20 slammed into reverse - Now with edits!
Post by: joedapper 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?