98 SLS only drives in reverse!
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Cadillac Seville / Cadillac Eldorado Forum Discussion, 98 SLS only drives in reverse! in Past Cadillac Vehicle Discussion; 98 Seville sls over 167k miles was driving fine outside of stiff power steering at times suddenly stop going forward ...
  1. #1
    lowkee's Avatar
    lowkee is offline Cadillac Owners Member
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    Question 98 SLS only drives in reverse!

    98 Seville sls over 167k miles was driving fine outside of stiff power steering at times suddenly stop going forward with a thump. After that only drives in reverse. When put in 1 2 3 D N R you can feel trans engage each gear normally but the car will move about a foot then its like someone slammin on the brakes. I checked the fluid an4d it was about 4 Litres low, also notice my oil was low about 2 qrts. Checked codes and did notice a couple new ones but I accidently cleared them. Please help!

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    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: 98 SLS only drives in reverse!

    Remember: Your transmission is a dry sump unit - there should be NO FLUID on the stick with the engine off. Check level with the engine hot, idling in P on a level surface.

    Clutch pack fluid pressure supply pump ?? Otherwise, no good ideas - hands on diagnostics by a good transmission man.

  4. #3
    Ranger's Avatar
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    Re: 98 SLS only drives in reverse!

    Sounds like you need a transmission shop.

  5. #4
    Aztec ETC ECS's Avatar
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    Re: 98 SLS only drives in reverse!

    I would check for a loose brake caliper first. (missing or broken bolt)

  6. #5
    lowkee's Avatar
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    Re: 98 SLS only drives in reverse!

    Thanks guys for the quick response. Threw her in drive today she went about 15 yards coasting smoothly in D no odd noises or anything until the I do not know what jammed up and threw her in R to get back in the spot she was parked in. Computer never deviated from 100% translife, just trying to rule a few things out before the trans folks get me
    She was running so good trans and motor, then this. Also the wheel guard on the front passenger side needed to be replaced from a blown tire. Will check for broken calipers and such.

  7. #6
    stoveguyy is offline Cadillac Owners Connoisseur
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    So u did check trans fluid level with motor running?

  8. #7
    lowkee's Avatar
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    Re: 98 SLS only drives in reverse!

    Stoveguyy Its on overload almost to the top of the neck.
    Aztec when I read your post it was like a lightbulb went off in my head, Im almost sure its not my tranny at all at least not yet (since I overloaded the fluid), but I threw her in drive and focused on that train of thought and notice while rolling I barely touch the brake and bam i replicated the bump and jerk so i parked her back . In the morning I will be inspecting the brakes and report back. Glad I did not tow her to the tranny shop im certain a new or used tranny woul of been in the works. Thanks guys, will report back.

  9. #8
    vincentm's Avatar
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    Re: 98 SLS only drives in reverse!

    Quote Originally Posted by Ranger View Post
    Sounds like you need a transmission shop.

  10. #9
    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
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    Re: 98 SLS only drives in reverse!

    Oh god, that again!

  11. #10
    Aztec ETC ECS's Avatar
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    Re: 98 SLS only drives in reverse!

    Quote Originally Posted by lowkee View Post
    Stoveguyy Its on overload almost to the top of the neck.
    Aztec when I read your post it was like a lightbulb went off in my head, Im almost sure its not my tranny at all at least not yet (since I overloaded the fluid), but I threw her in drive and focused on that train of thought and notice while rolling I barely touch the brake and bam i replicated the bump and jerk so i parked her back . In the morning I will be inspecting the brakes and report back. Glad I did not tow her to the tranny shop im certain a new or used tranny woul of been in the works. Thanks guys, will report back.
    Yes, if the caliper is loose, it can jam the rim like a one way clutch. Worth lookin' at.
    And if you tow it to the wrong shop, they will fix the problem & charge for a trans.

    ----------

    Quote Originally Posted by MoistCabbage View Post
    Oh god, that again!
    Whaddaumean? That's great! I almost gave the original a bump the other day.

  12. #11
    Amir A's Avatar
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    Re: 98 SLS only drives in reverse!

    His shop is 10 minutes from my home!

  13. #12
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    Re: 98 SLS only drives in reverse!

    Quote Originally Posted by lowkee View Post
    She was running so good trans and motor, then this. Also the wheel guard on the front passenger side needed to be replaced from a blown tire. Will check for broken calipers and such.
    Now the possible causes for unexpected, sudden, jerky stops comes to the fore.

  14. #13
    Aztec ETC ECS's Avatar
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    Re: 98 SLS only drives in reverse!

    Quote Originally Posted by Submariner409 View Post
    Now the possible causes for unexpected, sudden, jerky stops comes to the fore.
    I entered my thought before the clue.
    Doesn't really sound like something a 4T80E would do. (anything possible, though)

  15. #14
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    Almost tied crying of pain when I saw that lol

  16. #15
    Aztec ETC ECS's Avatar
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    Re: 98 SLS only drives in reverse!

    Quote Originally Posted by ThumperPup View Post
    Almost died crying of pain when I saw that, lol.
    My spell check fixed it for you.

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