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Park pawl stripped in one direction....?

Discussion in 'The Garage' started by mikey_d05, Dec 7, 2005.

  1. mikey_d05

    mikey_d05 1 ton status GMOTM Winner

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    I've been putting this off since I still have an e-brake in my trail truck so it doesn't bother me right now...but that could change very soon. The last time out I was pounding on my truck pretty good. Everything help up very well. I went to put it in park on a downhill slope and took my foot off the brake to depress the e-brake (I drive two-footed when I wheel) and the truck made a clicking/whirring noise and started rolling forward.

    I figured no big deal, the park pawl is stripped, I can live it. I stuck it in gear, shut it off, and put the e-brake on. Later in the day I forgot about it and put it in park while pointed uphill, took my foot off the brake to engage the e-brake and then realized the the transmission was holding it's position...

    I don't know jack about the inner workings of an auto nor do I pretend to. Anybody have a clue as to what's going on? It's a 700R4 that was rebuilt a while before I bought it. I didn't think it could be stripped in only one direction unless I'm losing it. This truck/transmission isn't worth a trip to the shop if they're gonna have to tear into it. Any advice is more than appreciated.
     
  2. 1979jimmy350

    1979jimmy350 1/2 ton status

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    no the parking paw can not only strip in one direction maby you just have a few teeth missing and the second time you missed the broken ones. How far did it roll the first time. And alos you know that putting a auto in gear when the truck off is the same as netural it will not hold you at all
     
  3. beater_k20

    beater_k20 Banned

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    it will hold it while its running, he said he put it in gear, and then shut it off.
     
  4. mikey_d05

    mikey_d05 1 ton status GMOTM Winner

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    I tried it repeatedly throughout the day with the same result. Unless I was consistanly hitting the same spot I'm pretty lost as to the cause.

    Yeah, I know an auto tranny in anything but park is like neutral. I just didn't want to put any more shavings into the transmission if the e-brake slipped a little.
     
  5. Cricket

    Cricket 3/4 ton status

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    I don't know about a 700R4 but I had a similar problem on a Th350. The pawl came slightly loose. I just got in there and tighted the armature. Problem solved.
     
  6. mikey_d05

    mikey_d05 1 ton status GMOTM Winner

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    I'll give that a whirl when I have time to tear into it. I might have time to tear the motor and trans out before I have time to fix it. :doah:
     
  7. 1979jimmy350

    1979jimmy350 1/2 ton status

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    if the bracket in the trans is loose it would be easy to fix just drop the pan and tighten two bolts i belive they are 13 mm if you want i can send a picture just let me know
     
  8. mikey_d05

    mikey_d05 1 ton status GMOTM Winner

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    Go for it man. As far as I know there's a little wizard in there doing black magic and voodoo to shift my tranny. :D

    Naw, I'm not that bad, but I'm not comfortable doing any advanced work on an auto either.
     
  9. gmtech954

    gmtech954 Registered Member

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    also check your linkages its possible that when you parked the body was tweaked enough to hold it all the way in park therefore not fully engaging the parking pawl.
     
  10. mikey_d05

    mikey_d05 1 ton status GMOTM Winner

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    Also a good thought. It pops into neutral on it's own when the suspension is flexed a certain way. Could definitely be it as well. Cool that these are both pretty easy solutions.
     
  11. beater_k20

    beater_k20 Banned

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    ****, whatever you do, DONT LET HIM OUT!!!:eek2:
     
  12. XHitman396

    XHitman396 1/2 ton status

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    hmmm. that is very odd, and im quite intrigued.. let us know what it is, or if you have more questions...
     
  13. 6.2Blazer

    6.2Blazer 1/2 ton status

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    Mine did the exact same thing. Years of use led to worn out body mounts and worn out shifter linkages, and some flexed out wheeling, basically led to the shifter not fully engaging park.

    Follow the shifter linkage from the firewall down to the trans and I bet you will find some really worn out pivot points.
     
  14. 78Suburban

    78Suburban 1/2 ton status

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    since it parks some of the time, I would be willing to bet money that it is a linkage issue.
    James
     
  15. 85mudblazin

    85mudblazin 1/2 ton status

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