Cruise Control

steemerboy2007 · January 17, 2011

My 07 Vortec Max's cruise control has power but will not engage at any speed. I checked the switch on the steering wheel and their is no problem there. Is there something under the hood besides the fuse that I can check....

redvett · January 17, 2011

Check out the brake switch.

gmtech4 · January 18, 2011

how about data on a scan tool,chk that to

steemerboy2007 · January 19, 2011

Check out the brake switch.

where is the brake switch located????

spfish · February 25, 2011

My 2008 K1500 Suburban lost cruise control about 6 months ago. Thought it would be a dealer issue. Have not been to this site in a while but came here and found a lot of folks have this problem. Common issue is the "stop lamp switch" on the brake pedal (located under the dash on the inside of the brake pedal at the attachment point of the push rod to the master cylinder. Held on by a single 10mm hex head screw and a clip). Part number 15861245. $23 from the dealer. Bought it and replaced it myself and that fixed it.

Took the old switch apart. Someone here said they fixed the problem by cleaning the contacts. That didn't help me. Inside the switch there is a rotating cam that activates the switch. When pressure is applied to the brake, it rotates. Mine had worn to the point it was not rotating enough to activate the contacts. New switch fixed it. Parts manager said this is a BIG problem and they keep LOTS of those switches on hand.

By the way, this DID NOT affect my tail lights or brake lights. The brake lights were working fine. Only affected the operation of my cruise control.

GMPartsDirect had it for $10. Easier for me to go 1 mile to the dealer and put it in myself.