ABS and Traction light stay on on 1996 Buick Riviera

My ABS and Traction light came on and stayed on after I had my rotors and brakes done in the front of my car. The back passenger needs shocks. Does that have anything to do with the light staying on?

Asked by for the 1996 Buick Riviera
return to the installer to check his work. when the abs light comes on, the trac light follows. when the abs is repaired, the trac light will go out.

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