How to Replace Rear Shocks 03-07 Cadillac CTS
Difficulty: Intermediate · About 90 min · Cadillac Cts 03-07
Replace the rear shock absorbers on a 2003–2007 Cadillac CTS only after confirming the suspension RPO and that the car does not have automatic leveling. The shock application varies, so match both replacements to the vehicle before lifting it.
Tools you will need
- Floor jack
- Jack stands
- Wheel chocks
- 10mm, 13mm, 15mm, 19mm, and 21mm sockets
- Ratchet and swivel
- Trim tool
- Pry bar
- Torque wrench
- Safety glasses
Parts and supplies
- Rear shock absorber pair matched to the CTS suspension RPO
- Shock mount bushings or hardware if damaged or included with the replacement
Steps
Verify the shock application
Check the suspension RPO label and parts catalog to confirm FE1 soft-ride suspension and whether automatic leveling is present. Obtain the correct rear shock pair and review the vehicle-specific fastener procedure.
Support the rear of the vehicle
Park on level ground, chock the front wheels, loosen the rear wheel nuts, and raise the rear at approved points. Support the body securely on jack stands and remove the rear wheels if needed for access.
Expose the upper shock mounts
Remove only the trunk or interior trim pieces that cover the upper shock fasteners. Keep clips organized and move wiring clear without pulling on connectors.
Support and remove the old shock
Support the rear suspension arm with a jack, then remove the lower shock fastener. Hold the shock while removing its upper mount hardware and guide it out without letting the suspension drop suddenly.
Install the replacement shock
Compare the new shock and bushings with the original, then position it in the same orientation. Start the upper and lower fasteners by hand and keep the suspension supported while aligning the mount.
Tighten and reassemble
Tighten the shock fasteners to the specification for the exact CTS suspension. Refit the trim and wheels, torque the lug nuts correctly, lower the vehicle, and repeat on the other side so shocks are replaced as a pair.
Check the ride and for contact
Confirm both shocks are secure and no trim or wiring is pinched. Bounce the rear gently, then take a short cautious drive and listen for knocks; investigate any noise before returning to normal use.
Check your vehicle’s repair manual for exact specifications and fit.