'97 Park Avenue
 

Cruise control not working. I have checked the fuse and brake lights, all O.K.

might check out the vacuum servo, as it contains some of the electronics. When mine went out, a used unit from a junk yard was the quick, easy-to-install fix.

Take your toe and lift up on the brake pedal when you try the cruise. A miss adjusted switch can be the problem. Sometimes the switch is bad. Ive rarely changed a servo.

It could be one of several different things. As I mentioned previously, the replacement of the electronic part, which connects at the vacuum servo, remedied the cruise control problem on my 89 Oldsmobile. I had the same problem again with my 93 Park Ave. My mechanic, who was a technician with GM Olds, Buick, and Cadillac for 25 years, claims that the majority, but not all, of these problems stem from within cruise control switch located on the turn signal lever. Fortunately, I sold the 93 Park Ave prior having to explore and fix the problem. I'd try eliminate the simple stuff first, like a fuse or brake switch, then go from there. A used vacuum servo electronic module can be had from a junk yard (find a good one with a return guarantee) for a few bucks and is easy to replace. Repairing the switch in the turn signal lever may be more intricate - hope this helps.

It could be one of several different things. As I mentioned previously, the replacement of the electronic part, which connects at the vacuum servo, remedied the cruise control problem on my 89 Oldsmobile. I had the same problem again with my 93 Park Ave. My mechanic, who was a technician with GM Olds, Buick, and Cadillac for 25 years, claims that the majority, but not all, of these problems stem from within cruise control switch located on the turn signal lever. Fortunately, I sold the 93 Park Ave prior having to explore and fix the problem. I'd try eliminate the simple stuff first, like a fuse or brake switch, then go from there. A used vacuum servo electronic module can be had from a junk yard (find a good one with a return guarantee) for a few bucks and is easy to replace. Repairing the switch in the turn signal lever may be more intricate - hope this helps.[/quote]