Last post on May 21, 2012 at 5:55 AM
You are in the GMC Yukon
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GMC Yukon, GMC Yukon Denali, GMC Yukon XL, Performance Mods, Electrical, Truck, SUV
#19 of 28 Re: 07 Cruise Control Problem [snorris]
Jan 26, 2010 (3:30 pm)
Any time if you step on the brake pedal, it will not only turn-on your brake lights but also disengage the cruise control on your vehicle (if its engaged at the time). On our particular model, the brake switch is installed next to the brake pedal mechanism as with most vehicles under the dash area; however, the switch also interfaces with (or a component of) the BCM (Body Control Module) interfaces with the Cruise Control system. So, you may want to ask you Service Tech to check the brake switch for proper installation/adjustment as a diagnostic starting point... In case your service department tells you there is nothing they can do without some sort of Trouble Code, ask them if they can re-program the BCM for you, hope that may resolve the problem.
#20 of 28 Re: 07 Cruise Control Problem [rsht]
Jan 26, 2010 (3:45 pm)
Thanks for the info. I will be over there next week and will see the dealer.
#21 of 28 Re: 07 Cruise Control Problem [snorris]
Jan 28, 2010 (12:31 pm)
Thanks for the information. I will look into it. The problem is getting the cruise control to work in the first place. Sometimes I can press and press the button and nothing happens (before you ask I do have the other button pressed for cruise control) and then other times it will just work. Also when it does work, which is rarely, if I hit a bump in the road it will turn off. To me it seems like maybe a loose wire connection that works when the wires are together but bumps or certain movements might disconnnect them. Could this be a possibility?
#22 of 28 Re: 07 Cruise Control Problem [yukon123]
Jan 28, 2010 (7:33 pm)
I have the exact same problem you do. Read msg #19 from rsht and that will explain the brake/cruise. I was refered to a very good mechanic who told me the same thing and that if it is set wrong it can interfere with the cruise. He told me next time mine went out to tap the brake,pull up on the pedal with your toe,tap the side of the pedal etc then try the cruise. I did this and mine came back on! when I hit resume. Then while it was on I pulled up on the brake pedal with my toe (just a little bit) let it go and the cruise went off, hit resume and it came back on. He also said when it goes off, traffic permitting, pull over and and check your brake lights. Sometimes they will be on because of the brake misadjustment and that will lock out the cruise. Next stop is back to the dealer, tell them to check the system and reprogram the brake control modual. Will let you know the out come. Hope this helps.
#23 of 28 07 Gmc Yukon Cruise Control Fix
Feb 24, 2010 (4:14 pm)
O.K. looks like the intermittent cruise problem is fixed. Changed the brake switch and the brake sensor switch. Hope this helps you other guy's having the same problem. It's a shame the customer has to do the leg work, research etc and tell the dealer what to look for. Seem's like if there is no error code etc they are clueless. Oh well hope this does it.
#24 of 28 Re: 07 Gmc Yukon Cruise Control Fix [snorris]
Feb 27, 2010 (9:19 am)
I took the Yukon to the dealership 2 days ago & found out the same thing. They changed the brake switch and sensor & $125 later my cruise control finally works! I figure the $$ it saves on speeding tickets will pay for the fix. My dealer did actually find the problem & solution quickly.
#25 of 28 Re: 07 Gmc Yukon Cruise Control Fix [yukon123]
Feb 27, 2010 (4:40 pm)
Glad yours works now. Hope the other people have the same out come...Sam
#26 of 28 Re: 07 Cruise Control Problem [snorris]
Sep 15, 2010 (5:10 pm)
Same problem with 2007 Denali Cruise. Works sometimes, most times not. Decided to change the brake switch since the slightest movement of the brake pedel would shut down the cruise. I wanted to have a look at it, so I decided to take it out.
Switch is attached to the brake pedel and connects to the rod going to the master cylinder. Remove one bolt which holds the retaining clip in place. Defeat the interlock on the retaining clip and slid up to remove. Slide the switch assembly off the post connecting to the master cylinder rod and the switch is free. Unplug the wiring harness you can get out of that uncomfortable position with the switch in hand.
What I determined was that the switch has a somewhat friendly user removable access which exposes the contacts within. Defeat the four plastic release tabs (tow on each side) and pry the cover off. Inside are one set of open contacts with two contact points, and one set of closed contacts, with another two sets of points. The open contacts close when the brake pedel is pushed, completing the circuit for the brake lights. The closed set open, causing the cruise control to disengage.
Everything looked as good as new, but I decided to clean the closed set of contacts. Using electrical contact cleaner and a gun barrel cleaning patch I wedged the contacts open, inserted the solvent soaked cloth and let the contacts close. Then pulled the cloth out to clean the face of the contacts. There was a hint of black residue on the cloth, so I repeated until the cloth came out clean.
I snapped the cover back in place, reinstalled the switch and the cruise control has worked flawlessly ever since.
I my case, a new switch would have fixed the problem, but the contact cleaning is a pretty simple process and saves a trip to the dealership!
#27 of 28 Re: 07 Cruise Control Problem [gmcglenn]
May 19, 2012 (1:48 pm)
Thanks for the step by step. It worked with my 2008 Yukon, but now I've got trouble with the door locks. rrw
#28 of 28 Re: 07 Cruise Control Problem [rrayw747]
May 21, 2012 (5:55 am)
Sorry to hear that you are experiencing some difficulties with your door locks - if you were planning on visiting a dealership to get this looked into, please send an email to socialmediagm.com and let us know. We're available to assist in whatever way we can!
GM Customer Service