Thumping/clunking on hard brake!
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Cadillac SRX Second Generation Forum - 2010+ Discussion, Thumping/clunking on hard brake! in Cadillac SRX Forums; During a hard brake recently (2 wheel drive performance model)I noticed a loud thumping/clunking along with groaning noises coming from ...
  1. #1
    retgi is offline Cadillac Owners Member
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    Thumping/clunking on hard brake!

    During a hard brake recently (2 wheel drive performance model)I noticed a loud thumping/clunking along with groaning noises coming from the front end. So when I got home I tried it again at a much lower speed of 20 mph and pretty much anything over 15 mph and still get the noise even on a hard brake from reverse. Groaning I can handle but thumping/clunking just doesn't sound normal especially from a $40K plus car! Sounds almost like what you'd hear from worn ball joints on a car from the sixties. Now there was another post about thumping when going over bumps or dips in the road and mine has no issues with that all. So today I had it checked at the dealer and they said on the service form " heard several different noises from front end, normal groan noise. Did isolate CK cradle support bolts. Re-torque lower control arm nuts to 22 lbs & 120 degree. Replaced lower control arm." Service advisor said they would have checked against another SRX but they didn't have another performance model available to verify with. She said it should be better now that they adjusted and replaced part. So I drove off and within a 100 ft I tested it again and still the same. So, I would appreciate it if any of you with performance model or even luxury model would check the next time you go some where. Just slam on the brakes from around 20 mph or so and see if you hear any obnoxious noise coming from the front end. It also happens in reverse. thanks.

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  3. #2
    sube5186's Avatar
    sube5186 is offline Cadillac Owners Connoisseur
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    Re: Thumping/clunking on hard brake!

    There are two previous threads concerning this issue. Sounds like you might have the same problem.


    http://www.cadillacforums.com/forums...ve-struts.html


    http://www.cadillacforums.com/forums...air-issue.html


    Sube

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    retgi is offline Cadillac Owners Member
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    Re: Thumping/clunking on hard brake!

    Thanks, but as I said in my post, I don't think this is the same issue. I read those posts and mine never makes any noise going over bumps or ruts in the road and isn't isolated to one side. My noise sounds like the whole front end....

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    sube5186's Avatar
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    Re: Thumping/clunking on hard brake!

    Quote Originally Posted by retgi View Post
    Thanks, but as I said in my post, I don't think this is the same issue. I read those posts and mine never makes any noise going over bumps or ruts in the road and isn't isolated to one side. My noise sounds like the whole front end....
    Sorry about that. I don't know how I missed that part of your post.


    Sube

  6. #5
    RightTurn's Avatar
    RightTurn is offline Cadillac Owners 10000+ Posts
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    Re: Thumping/clunking on hard brake!

    I haven't had to brake hard yet, but this thread makes me want to test my car.

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    Re: Thumping/clunking on hard brake!

    Are you braking hard enough to evoke the ABS; I think that is the first question needing to be answered.

  8. #7
    retgi is offline Cadillac Owners Member
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    Re: Thumping/clunking on hard brake!

    Yes. I had to do an emergency stop on the road while doing around 45 mph due to someone pulling in front of me. I mean a very hard brake. I got the same results testing while leaving my driveway at 15-20 mph. It's not like we do these kinds of stops every day but still it told me this just doesn't sound right for a Cadillac or any other car for that matter. I don't like what I hear and will probably take it back in to the dealer next week and bug them some more.

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    Re: Thumping/clunking on hard brake!

    Be sure to report back if you get any useful info from them.

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