Transmission grind under hard accel
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2004-2007 Cadillac CTS-V General Discussion Discussion, Transmission grind under hard accel in Cadillac CTS-V Series Forum - 2004 - 2007; My trans grinds when shifting Into 3rd only at high rpms or hard accel but when normal driving it shifts ...
  1. #1
    lx5.0 is online now Cadillac Owners Member
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    Transmission grind under hard accel

    My trans grinds when shifting Into 3rd only at high rpms or hard accel but when normal driving it shifts fine no grinds. I also noticed one time I had a hard time shifting into reverse gear would just not go In, is my trans messing up already the car is at 60k

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  3. #2
    darkman's Avatar
    darkman is offline Cadillac Owners Master
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    Re: Transmission grind under hard accel

    The first item on the trouble shooting chart for any kind of gear shifting issue is to flush and bleed the hydraulic clutch system.

  4. #3
    lx5.0 is online now Cadillac Owners Member
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    That was the first thing I did cuz I noticed my pedal would stick to ground on hard accel so I bled it but it still does it but pedal don't go all the way down anymore but I did notice my pedal got a lil stiffer with the bleedin which felt way better... I also noticed that sometimes my gears grab nice n somtimes they feel sloppy when shifting like the shifter feels loose

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  5. #4
    lx5.0 is online now Cadillac Owners Member
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    And I've been searching around n I don't know were to start I've seen a lot of people have similiar problems from shifter bushings to trans mount to slave cylinder

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  6. #5
    darkman's Avatar
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    Re: Transmission grind under hard accel

    If the clutch hydraulics are not an issue, the GM trouble shooting procedure calls for two tests. One is to establish whether the transmission can be shifted from neutral to any other gear with the motor not running (static test). The second is establish whether the transmission can be shifted from neutral to any other gear with the motor running (dynamic test). If it fails the static test the issue is likely with the shifter, or transmission mounting. If it fails the dynamic test, the issue is likely inside the transmission.

    Having said all that, the pedal sticking to the floor symptom can indicate a failing clutch pressure plate.

  7. #6
    lx5.0 is online now Cadillac Owners Member
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    Alright ima give it a try let c wat happens

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  8. #7
    lx5.0 is online now Cadillac Owners Member
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    Well I tried both test n it shifted fine every gear goes in fine hopefully its just a shifter bushing problem or mount ima start shopping around for a short shifter wat do u all recommend

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  9. #8
    darkman's Avatar
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  10. #9
    SevillianSTS is offline Cadillac Owners Enthusiast
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    Re: Transmission grind under hard accel

    good luck with that, I've got another thread going with similar issues. Had a reverse grind; dealer pulled the trans, rebuilt and now they say 3rd grinds at higher RPM's... so now I wait....

  11. #10
    lx5.0 is online now Cadillac Owners Member
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    Well hopefully its nothing big if I change my trans fluid wat do u all recommend

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  12. #11
    darkman's Avatar
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    Re: Transmission grind under hard accel

    Any major brand meeting the Dexron III specification.

  13. #12
    lx5.0 is online now Cadillac Owners Member
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    And I'm really interested in that pinsuoff shifter but that Link got me no wer

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  14. #13
    darkman's Avatar
    darkman is offline Cadillac Owners Master
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    Re: Transmission grind under hard accel

    Quote Originally Posted by lx5.0 View Post
    And I'm really interested in that pinsuoff shifter but that Link got me no wer

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    I just bumped the thread to which the link pointed - it is the thread to discuss orders for that shifter.

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