1999 Buick Park Avenue Q&A
1999 Buick Park Avenue Question: Cruise control doesn't work
The cruise control system could fail due to a malfunctioning brakelight switch (staying on) or a vehicle speed sensor (VSS) problem (intermittent or failed). Check that the brakelights aren't stuck on, that's the easiest thing to check. If the VSS is faulty, I'd think it'd set a diagnostic code and turn on the check engine light, but you haven't mentioned the check engine light. If you want to find a GM specialist, here's our directory link for you: https://repairpal.com/directory?address=50530&car_brand_names=Buick - Superbob
worked sometimes in past,but since weather started getting hot it doesn't work at all.