Cruise Control will turn ON but will not "set" to hold the speed.

[Merlin Broaddus]

2000 1500 5.9L gas, auto trans, 4x4. This is a new to me truck. My Cruise Control will turn ON but will not "set" to hold the speed. I have checked for other threads, but none with this issue. Any and all help will be appreciated. THANKS

 

[Rado]

Welcome , This will sound strange but check your third brake light bulbs . and brake lights Make sure they ALL work. It will affect the Cruise Control on some cars !
A cheap fast check and maybe a cheap repair lol,
I have read that in the car forum I go to and just did a google search about it, So worth a shot and PLEASE update us if that was it or what you did to fix it!

Thanks

 

[Tom Whitehead]

My cruise control would turn on, but then it would creep up gradually. If I wasn't careful, I would be doing well over the speed limit. What I did was: I took the connections loose to the PCU, and sprayed them liberally with CRC contact cleaner. I pushed the connector on and off at least half a dozen times, and wiggled it as well. Now it works – at least most of the time. How these newer vehicles, that's almost always the first thing I could do. And also the cheapest. Best wishes, Tom

 

[4x4Podcast_Rich]

Happened to me once. Cruise was working fine, cancelled it when I slowed down then it wouldn’t reset for the rest of the trip. The next time I got in the truck it was fine. If it’s still not working for you,disconnect your battery for about ten minutes to reset the computer and all should be good.

 

[Merlin Broaddus]

Welcome , This will sound strange but check your third brake light bulbs . and brake lights Make sure they ALL work. It will affect the Cruise Control on some cars !
A cheap fast check and maybe a cheap repair lol,
I have read that in the car forum I go to and just did a google search about it, So worth a shot and PLEASE update us if that was it or what you did to fix it!

Thanks

Checked and the third brake light is working. Thanks, it was worth a check!!!