Reverse Grind, Again ???
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2004-2007 Cadillac CTS-V General Discussion Discussion, Reverse Grind, Again ??? in Cadillac CTS-V Series Forum - 2004 - 2007; So my new trans is almost a year old. Original was grinding going into Reverse (unless I went to 1st ...
  1. #1
    SevillianSTS is offline Cadillac Owners Enthusiast
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    Reverse Grind, Again ???

    So my new trans is almost a year old. Original was grinding going into Reverse (unless I went to 1st gear, first) and it was popping out of reverse occasionally.

    So I just noticed that UNLESS I go into 1st gear first it is starting to grind again as I push the shifter into Reverse.

    Clutch fluid was flushed in the fall before putting it away for storage, it is still clean and up to level.

    It did not do this until just recently. I always roll into my neighborhood in 3rd and stop in front of my house and then go straight into Reverse.

    Any thoughts before I take it back in. I have a One year warranty on the trans which is about to expire. ???

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  3. #2
    darkman's Avatar
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    Re: Reverse Grind, Again ???

    Since it is under warranty, I would get it to the shop to get the condition documented. Are there any other shifting problems?

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    Cadillac Cust Svc's Avatar
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    Re: Reverse Grind, Again ???

    Quote Originally Posted by SevillianSTS View Post
    So my new trans is almost a year old. Original was grinding going into Reverse (unless I went to 1st gear, first) and it was popping out of reverse occasionally.

    So I just noticed that UNLESS I go into 1st gear first it is starting to grind again as I push the shifter into Reverse.

    Clutch fluid was flushed in the fall before putting it away for storage, it is still clean and up to level.

    It did not do this until just recently. I always roll into my neighborhood in 3rd and stop in front of my house and then go straight into Reverse.

    Any thoughts before I take it back in. I have a One year warranty on the trans which is about to expire. ???
    Hello SevillianSTS,

    I understand how you want opinions from other forum members and they do offer some great advice! I do recommend taking your vehicle into the dealership to discuss your concern, especially since the trans is still under warranty.

    Regards,

    Laura M.
    Cadillac Customer Service

  5. #4
    SevillianSTS is offline Cadillac Owners Enthusiast
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    Re: Reverse Grind, Again ???

    Quote Originally Posted by darkman View Post
    Since it is under warranty, I would get it to the shop to get the condition documented. Are there any other shifting problems?
    Nope, shifts great, especially with the revshift trans-mount block in there.

  6. #5
    SevillianSTS is offline Cadillac Owners Enthusiast
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    Re: Reverse Grind, Again ???

    I'll be taking it in this afternoon. If the Reverse syncro is confirmed to be bad, is there a "better" part I could purchase and have them replace rather than another stock one. Reading into this it seems this is a common failure.

  7. #6
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    Re: Reverse Grind, Again ???

    If I get reverse grind, I go from 4th to reverse. Try it in the meantime until you take it in. Seems to work best for me. 4th to R

    [2006 CTS-V - "The Vee Baby Seamus"] - 372rwhp / 361rwtq
    Pacesetters | Off Road Adapters | Cutouts | Stock Airbox | Stock Catback
    BMR AWK | CS Diff Block | Short Shifter | UMI MM | Revshift TM

  8. #7
    SevillianSTS is offline Cadillac Owners Enthusiast
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    Re: Reverse Grind, Again ???

    I took it to the dealer, he did agree that it does grind as I stated. They are busy right now so they started the paperwork and I will call later and get it looked at next week.
    Now that I have experimented with it, I noticed: It grinds anytime I am in Neutral, press in the clutch, and then go to reverse. If I go to ANY forward gear first leave the clutch in then I can get to reverse without a problem. I also noticed when it grinds the speedometer goes up for a second. Service guy said something along the lines of the "----" shaft not being stopped when I'm going into R.

    Any other suggestions ? Service guy was kind of puzzled too.

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    Re: Reverse Grind, Again ???

    Quote Originally Posted by SevillianSTS View Post
    I took it to the dealer, he did agree that it does grind as I stated. They are busy right now so they started the paperwork and I will call later and get it looked at next week.
    Now that I have experimented with it, I noticed: It grinds anytime I am in Neutral, press in the clutch, and then go to reverse. If I go to ANY forward gear first leave the clutch in then I can get to reverse without a problem. I also noticed when it grinds the speedometer goes up for a second. Service guy said something along the lines of the "----" shaft not being stopped when I'm going into R.

    Any other suggestions ? Service guy was kind of puzzled too.
    Dragging pressure plate?

    [2006 CTS-V - "The Vee Baby Seamus"] - 372rwhp / 361rwtq
    Pacesetters | Off Road Adapters | Cutouts | Stock Airbox | Stock Catback
    BMR AWK | CS Diff Block | Short Shifter | UMI MM | Revshift TM

  10. #9
    SevillianSTS is offline Cadillac Owners Enthusiast
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    Re: Reverse Grind, Again ???

    I just had the rear end up in the air. When I put it into gear the wheels turn "maybe a few inches" then they stop. I tried revving it up while in gear and clutch in, and the wheels do not turn. I did notice that if I pushed the clutch in and waited 5 to 10 seconds then go into gear the wheels turned less to almost not at all.

    If it was the pressure plate wouldn't that affect all gears ?

  11. #10
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    Re: Reverse Grind, Again ???

    The service manual literature on this subject is pretty clear - the transmission should pass two tests. First, with the motor running, you should be able to shift from neutral to any gear without the car lurching or the gear grinding. If you cannot do this, you first look at clutch operation (clutch drag) and then to the transmission. Second, with the motor not running you should be able to move from any gear to any other gear. If this test fails, you look first at the shift linkage.

  12. #11
    SevillianSTS is offline Cadillac Owners Enthusiast
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    Re: Reverse Grind, Again ???

    Hmmm, I get to step 10 ? As far as step 2: it goes from N to all forward gears just fine. N to R = Grind.

    Guess we'll see what they say when they tear into it.

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    Re: Reverse Grind, Again ???

    Quote Originally Posted by darkman View Post
    The service manual literature on this subject is pretty clear - the transmission should pass two tests. First, with the motor running, you should be able to shift from neutral to any gear without the car lurching or the gear grinding. If you cannot do this, you first look at clutch operation (clutch drag) and then to the transmission. Second, with the motor not running you should be able to move from any gear to any other gear. If this test fails, you look first at the shift linkage.
    I have to ask you Darkman, are you pulling these off Alldata? You always come thru in a 'clutch' with them. lol

    [2006 CTS-V - "The Vee Baby Seamus"] - 372rwhp / 361rwtq
    Pacesetters | Off Road Adapters | Cutouts | Stock Airbox | Stock Catback
    BMR AWK | CS Diff Block | Short Shifter | UMI MM | Revshift TM

  14. #13
    SevillianSTS is offline Cadillac Owners Enthusiast
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    Re: Reverse Grind, Again ???

    Hey Darkman, I saw you talking about trans issues on another thread...

    Mine is going in on Tuesday for the official diagnosis; but he even seemed stumped to why mine was only grinding when going into Reverse.

    Do you think I am dealing with a clutch issue ? I don't think so, but I'm trying to arm myself with all the info I can before I leave it with them.

    All forward gears are nice and smooth once warmed up. When in the air as I push into gear the wheels turn "maybe a few inches" and then stop, and remain stopped even if I revved it up.
    If I go from N press in clutch into R I will get grind every time; UNLESS I press in the clutch and wait 10-15 seconds then it will go into R smoothly. Seems to me I should not have to "wait" to go into gear.
    And other option is to go into another forward gear before Reverse and all is smooth.

  15. #14
    darkman's Avatar
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    Re: Reverse Grind, Again ???

    Quote Originally Posted by SevillianSTS View Post
    Hey Darkman, I saw you talking about trans issues on another thread...

    Mine is going in on Tuesday for the official diagnosis; but he even seemed stumped to why mine was only grinding when going into Reverse.

    Do you think I am dealing with a clutch issue ? I don't think so, but I'm trying to arm myself with all the info I can before I leave it with them.

    All forward gears are nice and smooth once warmed up. When in the air as I push into gear the wheels turn "maybe a few inches" and then stop, and remain stopped even if I revved it up.
    If I go from N press in clutch into R I will get grind every time; UNLESS I press in the clutch and wait 10-15 seconds then it will go into R smoothly. Seems to me I should not have to "wait" to go into gear.
    And other option is to go into another forward gear before Reverse and all is smooth.
    Based on those details, my first guess would be the reverse gear synchronizer.

  16. #15
    Cadillac Cust Svc's Avatar
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    Re: Reverse Grind, Again ???

    Quote Originally Posted by SevillianSTS View Post
    Hey Darkman, I saw you talking about trans issues on another thread...

    Mine is going in on Tuesday for the official diagnosis; but he even seemed stumped to why mine was only grinding when going into Reverse.

    Do you think I am dealing with a clutch issue ? I don't think so, but I'm trying to arm myself with all the info I can before I leave it with them.

    All forward gears are nice and smooth once warmed up. When in the air as I push into gear the wheels turn "maybe a few inches" and then stop, and remain stopped even if I revved it up.
    If I go from N press in clutch into R I will get grind every time; UNLESS I press in the clutch and wait 10-15 seconds then it will go into R smoothly. Seems to me I should not have to "wait" to go into gear.
    And other option is to go into another forward gear before Reverse and all is smooth.
    Hello SevillianSTS,

    I hope your diagnosis goes well and they are able to help resolve your vehicle concern. Please update us next week after your visit.

    Regards,

    Laura M.
    Cadillac Customer Service

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