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parking gear doesnt hold

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by zach78k5, Mar 17, 2001.

  1. zach78k5

    zach78k5 1/2 ton status

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    when the truck is put into park on a downhill, even a slight downhill, the park gear slips. i was told by a shop that it is some lever or something that holds it in place. does the tranny have to come out to replace this. i would like to fix it but i am not up for pulling the transmition just for that .
    thanks
     
  2. Whassup

    Whassup 1/2 ton status

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    Yes, the transmission must come out. You could replace this part (i've done it myself, but can't recall the name of it, :P ) if you are confident enough. But most people are wary to do DIY, so taking it to the transmission shop is the way to go.

    I like my trucks BIG, my women HOT, and my Budweiser COLD!
     
  3. your trannie may not need to come out! mine did the same thing and when i took it to the shop they found that part of the park mechanism wasn't installed correctly(bought the rig with a rebuilt trannie). they fixed it on the rack. its a long shot, but this may be the case for you too. if not then there's a good chance the trannie has to come out. it depends on how long it has been slipping and how many times you have allowed it to slip- roll in park. the more this happens the more it wears out that gear inside and the greater the chance of the trannie having to be pulled to fix it. good luck.

    78, 350/350/203, 3/4 ton, 4" lift, 35" BFGs
    <A target="_blank" HREF=http://bluebeast.coloradok5.com/>http://bluebeast.coloradok5.com/</A>
     
  4. jimmyjack

    jimmyjack 1/2 ton status

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    It sounds like a parking awl. Its basically a platform that the valve body uses to decide a gear. If I'm in the right train of thought, the one in my 700 r4 just unbolts from the valve body. Of course I could be and probably am way off base.

    creepin' and crawlin'

    Jim
     
  5. Whassup

    Whassup 1/2 ton status

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    Parking awl! Thank you jimmyjack, I couldn't remember that for the life of me. The parking awl on my 700R in my S-10 broke long before I ran across the K5 I traded it on. I had to take the tranny out and tear into it to fix it. Actually, automatic trannies aren't difficult to work on as long as you draw a diagram as you take it apart and DO NOT lose those balls in the valve body. From start to finish it took me about 3 hours my first time rebuilding, later on the front pump took a crap on me and took it to my buddy's tranny shop. He said that it was amazing the tranny worked as long as it had for me considering how much it was worn out. I bought a rebuilt one, DAMN they're expensive! Luckily that Gutless Wonder is out of my hair. Now I got my K5 to keep me busy.

    I like my trucks BIG, my women HOT, and my Budweiser COLD!
     
  6. Mudzer

    Mudzer 1/2 ton status Author

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    Depending on what the problem is, I would say the tranny will not need removed. The problem is the parking pawl or the parking gear. If it is the pawl, there are two bolts which hold this on. You will have to remove the pan, filter and part of the linkage internal to the tranny. You may also have to remove the govenor housing and governor. This is all fairly easy job. You should contact a tranny shop and get a blown-up photo of the internals of your tranny. If you dont have one, I may find it for you. Email me if you have questions. Now, if it is the parking gear, you will have to remove the tranny and completely dissasemble the tranny from the front. This is major work, so I would look for another tranny if this is the problem. But first, start by removing the pan to inpect the parking pawl.


    Mudzer 1978/91 K5
    <font color=blue>www.mudzer.coloradoK5.com</font color=blue>
     
  7. Whassup

    Whassup 1/2 ton status

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    That's right, you wouldn't need to remove the tranny, but I had it out anyway since I had other crap to replace on the old S-10. It didn't dawn on me that you can do it with the tranny in. :P

    I like my trucks BIG, my women HOT, and my Budweiser COLD!
     
  8. HarryH3

    HarryH3 1 ton status Author

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    Mudzer's got it right. It's called the parking pawl, not awl. [​IMG] They usually get broken by folks shifting to park while the vehicle is still rolling. They aren't built to take that kind of abuse! [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
     
  9. muddin4fun

    muddin4fun 3/4 ton status

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    I always put the emergancy brake on when I put it in park. The brakes are designed to keep the vehical still anyway. Besides, if park goes out, something else is there to hold it and keep it from rolling away. Also, I know that my emergancy brake will work if my brakes go out in an inconvienant time. Have you seen those people (maily yuppies) that slam their cars and trucks into park and the truck/car bounces on the tranny a couple of times! Ouch!!!

    [​IMG]


    <A target="_blank" HREF=http://muddin4fun.coloradok5.com>http://muddin4fun.coloradok5.com</A>
     
  10. DMK

    DMK 1/2 ton status

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    Yes it is the parking pawl. No the trans does not have to come out. Not hard to do, a trans shop will charge about 75-100 bucks to fix.
     
  11. dyeager535

    dyeager535 1 ton status Premium Member

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    Look at how the parking pawl holds the vehicle, and you will likely never again trust that alone to hold your vehicle on a hill. He's right, they are not designed to take the entire weight if the vehicle for people that are too lazy to tighten up the 1/2" adjustment nut on the e-brake cable.

    Dorian
    My K5 and Chev/Olds tech/links page: <A target="_blank" HREF=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</A>
     
  12. i_4x4

    i_4x4 1/2 ton status

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    I always engage my E-brake first, then put tranny in Nuetral (to take the load off the tranny) it will roll an inch or so, then put in park. That way when you release in from park you will not have the load of 5,000 lbs against the pawl. And no popping or bang when released.

    Later Ed


    LET'S ROCK
    Don't follow me you will get STUCK!!
     
  13. HarryH3

    HarryH3 1 ton status Author

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    Have you installed a body lift or lowered the transfer case lately? It could just be that the shift linkage needs to be adjusted. The trans may not actually be all the way in park when the shifter says it is.

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
     

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