Replaced Almost Everything...what's loose??

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Cadillac SRX First Generation Forum - 2004 - 2009 Discussion, Replaced Almost Everything...what's loose?? in Cadillac SRX / XT5 Forums; 2006 Cadillac SRX V8 AWD 102k miles. Parts Replaced (not necessarily all because of the below issues, but all issues ...
  1. #1
    CoolATIGuy is offline Cadillac Owners Member
    Automobile(s): 2006 Cadillac SRX V8 Northstar AWD w/ 18" wheels
    Join Date
    Jan 2013

    QuestionReplaced Almost Everything...what's loose??

    2006 Cadillac SRX V8 AWD 102k miles.

    Parts Replaced (not necessarily all because of the below issues, but all issues have existed both before and after all repairs that I know of):

    - Both front struts (AC Delco)
    - Both front stabilizer end links (I believe AC Delco)
    - Both front lower control arm assemblies (at 83k miles, before I took ownership)
    - Axle Seals (also at 83k miles, before I took ownership)
    - Left hand engine mount (driver's side, primary mount)
    - Both front hub/bearing assemblies (Timken)
    - Both front rotors (Raybestos)
    - Both front brake pads (Wagner)
    - All 4 tires (Yokohama, I'm not sure if problems were as noticeable beforehand as these were installed not long after I took ownership of the car and lots has been done, plus it could have gotten worse in the meantime while I've been getting to know the car)
    - All 4 tires rebalanced again
    - Computerized 4-Wheel Alignment (including rear adjust)

    Problem(s) (may or may not be related to eachother):

    - Car tracks straight if you let go of the wheel, but steering wheel has a constant faint shimmy back/forth at ~40mph, and around 60mph becomes much more noticeable (you can visibly watch it oscillate and feel it in your hand)

    - The shimmy is not just in the wheel, you can also feel it in the seat, in the floorboard - the whole car seems slightly unsettled

    - Going over bumps/small potholes at low speeds, there is a faint "pop" noise (jounce/creak, hard to describe) from the front, not loud but noticeable. Noises are less common and pronounced if both wheels go over the bump etc at the same time.

    - At higher speeds it is louder, and becomes more of a rattle. Also when hitting a small pothole for example on the highway, the rattle sound happens, but also feels like the wheel gets a little play/motion/slack for a half-second, then back to fully engaged/responsive. It still works, but feels like it loses grip for a second.

    - It does NOT make any weird noises (popping, clicking, grinding) when turning the wheels, either stopped or at speed. Only when going over bumps.

    - We have also bounced on the front end about as hard as possible by hand, but it doesn't make any noises at all when sitting still. No pops, creaks, anything.

    Any thoughts? At this point most of the front end is seems to me if the noise is from both sides, it must be something that the sides have in common...maybe something with the sway bar, or axle, or somesuch?

    Have owned the car since beginning of January this year, at just under 90k miles. Clean title, but did have a front end collision before I got it. Everything has been repaired to my knowledge though.

    Thanks in advance!

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  3. #2
    repnatl is offline Cadillac Owners Enthusiast
    Join Date
    Oct 2012
    Wow that's a lot to deal with I can imagine. Prob not the issue but just because the control arms are fairly new doesn't mean anything. I've gone through 3 sets in 2 years and 35k miles now doing for my 4th set.

  4. #3
    glake89's Avatar
    glake89 is online now Cadillac Owners Connoisseur
    Automobile(s): 05 srx awd v6 (on the way out), '07 GXP, 2012 li'l red wagon 3.6 AWD
    Join Date
    Aug 2010

    Re: Replaced Almost Everything...what's loose??

    Shimmy- have the front wheels balanced on the car. Not every shop can do it. Need a good alignment place.
    Check R&P for looseness.
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  6. #4
    Professor Wizard's Avatar
    Professor Wizard is offline Cadillac Owners Connoisseur
    Automobile(s): 2009 SRX-4 Sport / TriCoatWhite
    Join Date
    May 2009
    St. Louis, MO

    Re: Replaced Almost Everything...what's loose??

    Have you always owned this car.

    If so... did it once drive smooth?

    have you had the rotors replaced?

    did the car drive with shimmy after that?

    I have had rotors that were so far out of balance, they affected the ride of a car above 40mph.

    Have the rotors checked.


    Oops.. my bad - - I re-read your list, and see you installed Raybestos Rotors... that should have done it...

    However, Just last weekend installed a brand new set of Rotors on my sons 15' Ford Ranger, and it was horribly out of balance... We stuck our own weights in it until it no longer "settled".

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