Step by step instructions for replacing front strut bearings on 2006 DTS

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  • 1 Post By grullon10
  • 1 Post By victorlentz
Cadillac DTS Forum - 2006 through 2012 Discussion, Step by step instructions for replacing front strut bearings on 2006 DTS in Past Cadillac Vehicle Discussion; I have searched this site and googled for instructions for replacing the front strut bearings on my 2006 DTS. I ...
  1. #1
    Tom52 is offline Cadillac Owners Member
    Automobile(s): 2006 DTS LUX III
    Join Date
    Aug 2013

    Step by step instructions for replacing front strut bearings on 2006 DTS

    I have searched this site and googled for instructions for replacing the front strut bearings on my 2006 DTS. I have seen some pictures but no actual instructions or YouTube videos. Anyone have this information or can steer me to a website?

    From my research I assume my problem is the strut bearings. Symptoms are a slight clunk sound when backing or steering at slow speeds or even when turning the steering wheel left or right when sitting still. I also hear a slight clunk when going at low speed over any bumps. I assume it is either these strut bearings or possibly the intermediate steering shaft. The problem seems very similar to my 2003 Chevy Silverado pick up. The problem there was poor design of the intermediate steering shaft. Are the symptoms for a defective intermediate steering shaft any different? I don't want to change the wrong parts unnecessarily.

    Back to the change out of the strut bearings, what special tools are required to remove the struts? I assume spring compressors? Any particular style or brand? What about torque specs? Can the struts be removed with hand tools or is an impact wrench required?

    Pictures I have seen on the net indicate the tire must be raised off the ground, thus the strut full extended before removal? Is there any problem using a floor jack under the car in the area indicated for jack placement?

    Car has less that 46,000 miles on it. Any reason to replace the struts at the same time? Other than the noise the car seems to ride fine and I don't want to throw money at it if new struts are not required. Oh, by the way, it has the standard suspension not the expensive MRC.

    Any help or suggestions would be appreciated.

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  3. #2
    grullon10's Avatar
    grullon10 is offline Cadillac Owners Enthusiast
    Automobile(s): 2006 cadillac dts
    Join Date
    Dec 2012
    If you have the base model the best thing is go to ebay buy the entire unit they have it for around 250 the pair. They are oem it come with the strut, mount and spring.
    Andrew224 likes this.

  4. #3
    SRG963's Avatar
    SRG963 is offline Cadillac Owners Fanatic
    Automobile(s): 2010 SRX LUX
    Join Date
    Jun 2004
    Texas to the Carolinas

    Re: Step by step instructions for replacing front strut bearings on 2006 DTS

    You can check the bearings by putting the vehicle on a lift with tires just off the ground, have a friend turn the wheel left to right, and check for bearing noises. Clunk noise may be LCA ball joint as well.

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  6. #4
    Andrew224's Avatar
    Andrew224 is offline Cadillac Owners Fanatic
    Automobile(s): '41 67, '66 75, '02 Deville-L, DTS, DTS-L, XTS, '08 Escalade
    Join Date
    Apr 2012
    Plainfield, IL

    Re: Step by step instructions for replacing front strut bearings on 2006 DTS

    This can be done with a floor jack and hand tools. The front wheel of the side you're working on must be off the ground completely. You will also probably need to use the jack to support adjust the height of the lower control arm once you remove the lower mount bolts from the strut. I'd also suggest that you use a propane torch too to heat the lower bolts to help break them loose because they are on there really good!

    Buy the whole assembly. I purchased a set from Detroit Axle and have been very happy with them.

    Being that the car is only 4 years old and less than 50k miles, I think you're pretty safe to replace just the one side.

    I agree, it could be the lower control arm ball joint or the bushings in the arm itself. I recently thought I had a bad strut bearing, it turned out to be the front bushing on the lower control arm. You should get some help to pinpoint the problem before wasting time and money replacing expensive parts that are labor intensive to replace that don't need to be replaced.

  7. #5
    hbrigiii is offline Cadillac Owners Member
    Automobile(s): Cadillac 2006 DTS
    Join Date
    Dec 2006
    Rockport, Texas

    Re: Step by step instructions for replacing front strut bearings on 2006 DTS

    Sorry but I need instructions for the upper front mount where the shock piston enters the engine dept. through a rubber bushing bolted into a tower. Mine broke through the worn out rubber bushing and is now beating a hole through the hood. Thanks.

  8. #6
    victorlentz is offline Cadillac Owners Member
    Automobile(s): DST
    Join Date
    Dec 2014

    Re: Step by step instructions for replacing front strut bearings on 2006 DTS

    DTS strut bearing replacement. My 06 DTS had the thunk-thunk sound when going over uneven ground or turning so without having it inspected at a dealer I purchased both upper bearings from my dealer. You are able to buy just the bearing but I bought the complete bearing and mount and I'm glad I did so as the ball bearings showed little wear and still had grease on them. Changing them out, even though the bearing and race rotated smoothly and I couldn't visually see any wear, eliminated the thunk-thunk noise. If you're going to do it yourself, remove the tire, with a small chisel, mark the strut bolt flange and steering knuckle near the top and bottom of the knuckle, loosen the 2 nuts on the steering knuckle (mine broke easily with a 18" flex handle and socket) and back them off until they are flush with the bolts. Next loosen the top strut piston nut with a torx wrench (I used a 3/8" torx socket and flex handle and a 15/16" combination wrench) and back it off until it's flush with the top of the strut piston). You can loosen the 3 bolts holding the strut bearing as well while your in that area. Next I used a heavy hammer to drive out the 2 knuckle bolts, they are splined for about a inch so it took about 6 good licks to get them moving. I didn't buy new bolts and nuts but just filed the nuts where the hammer mushroomed the nuts. After you drive the bolts out as far as you can with the nuts on, finish driving them through the steering knuckle with a punch the rest of the way. Pry the knuckle off the strut with a large screwdriver, remove the 3 upper bolts and swing the bottom of the strut towards you and out. I had a large opening wood working vice to help me position the 2 rented spring compressors but you could do it on the bench as well. Compress the spring until you can get some play between the upper piston nut that you loosened while still on the car and the strut bearing that you're going to replace and then remove the nut from the piston. Slide the strut out from the spring, inspect it for leaks and smooth operation and replace it if you think its weak or leaking. Reinstall the spring back over the strut, make sure the bottom spring rubber is cleaned out and back in it's 2 alignment holes and then position the upper new insulator and bearing in the position that they were before your disassembled them. Pull the strut piston out and screw on the piston nut and tighten with your torx and combination wrench. Remove the spring compressors evenly, slip the strut back up into the car and screw on the 3 upper bolts loosely. Push the steering knuckle back into the strut flange, (this can be a struggle so use a screwdriver or punch to line up the holes) install and tighten the 2 splined bolts making sure that the chisel marks that you made on the strut flange and steering knuckle line up perfectly or else you will need a wheel alignment later. Tighten the top 3 bolts, install the wheel, lower the car and finish tightening the wheel nuts. Get in the car, turn off the radio, cross your fingers and if you don't hear that thunk again, you've fixed the right thing and you hopefully don't have any further issues.
    Superjim likes this.

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