Buick Repair Questions? Ask a Mechanic for Answers ASAP
hello . I can assist you with this . Did it stop working all of a sudden or has it been intermittantly giving you an issue ?
okay can you drive the car , be sure you are driving at least 40 MPH , turn the cruise switch on and before you push the SET button put your toe behind the brake pedal and " pull " the brake pedal towords you . hold it and then try setting vthe cruise on .
do you have steering wheel control or On The Turn signal arm ?
and tilt column of course
the only 2 common issues are the brake switch and the harness to the switch up the column . the harnesses will brake from the constant tilting up and down over time . I suspect either the cruise switch harness or the brake switch . you can check the 4 pin connector at the column under the dash with a DV meter to see if you are getting all the functions . ON , set , resume . Another cause on GM's but less likely is brake light bulbs out or lost ground circuits on the rear lighting harness at the tail light/brake light sockets .
let me check that
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