When I go over a bump in the road the service stability systems comes on the dash, the abs lights up and the traction control light comes on. I notice the car sitting low in the back and don't hear the air shocks pump. When I turn the car off an on it resets until I hit another bump. I did take it to cadillac once but it was very intermittent then, now it always happens. I know it had 3 codes in the history but I do not remember what they were. I think I have a bad shock, how do I tell which one is bad. Also where can I buy replacement shocks at a reasonable price. The next time it happens I can take it to auto zone and have them give me the codes. Please advise on how I should proceed.

Thanks

 

I just had the computer scanned and the following codes are showing during the failure, C1223, C1227,C1234. I am going to replace the left rear hub assembly.

 

My rear shocks are leaking as soon as I go over a bump the service stability system comes on. If I put 160lbs of salt in the trunk the service stability comes on. I guess I have to replace the rear shocks. But i may have more probles as the abs comes on and traction control I had the Rear BCM scanned and once it had some left rear speed sensor codes. I don't know what to do , any suggestions.

 

I had the car scaned today here are the codes, can somone help me out with this one. Where are the grounds that I can check.
What can you reccommend that I do.
C1223 - Left Rear Wheel Speed Sensor Input Signal is 0
C1234 - Left Rear Wheel Speed Circuit Open or Shorted
C1227 - Left Rear Excessive Wheel Speed Variation
C1242 - Pump Motor Circuit Open
C1284 - Lateral Accelerometer Sensor Bias Malfunction
C1291 - Open Brake Lamp Switch Contacts During Deceleration