Cruise control not working

Tiny
BLAINE00
  • MEMBER
  • 2007 GMC YUKON
  • V8
  • AWD
  • AUTOMATIC
  • 42,000 MILES
My cruise quit working. It started working off and on and now will not work at all. I have changed the fuse and don't know what to do now?
Friday, March 5th, 2010 AT 9:32 AM

7 Replies

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
Without a scan tool, about all you can do is check the switch. Does the cruise power on, as indicated by the icon, it just don't set or resume? The switch receives power from the BCM(body control), and the signal is interpreted in the BCM as well. If the power switch functions, it is receiving power and ground from the BCM on the same circuit that all the switch functions use. If you disconnected the cruise switch, pins 1 and 3 are the circuits to test. Here are the resistance values:

Important: The cruise control ON/OFF switch must be ON in order to properly measure the resistance of the - SET, the + RES, and the Cancel switches.

With the ignition OFF, remove the inflatable restraint steering wheel module. If you need to remove the steering wheel inflator for access, here is the procedure.
On the back side of the steering wheel, there are 2 access holes. Using a 3-4 mm T handle allen wrench, insert in a cross car (Horizontally) direction and slightly outboard (handle towards I/P) push in 40mm (1 1/2in) to engage release spring.

With the ignition OFF, measure the resistance between terminals 1 and 3 at the cruise control switch side of the connector. Individually activate and hold each cruise control function switch and compare the resistance reading to the values on the schematic for the ON/OFF, - SET, the + RES, and the Cancel switches.
à †’ If any of the resistance measurements for the OFF, ON, - SET, + RES, and Cancel switches are not within the listed resistance values, replace the cruise control switch assembly.

Function Switch
Minimum Resistance Value
Maximum Resistance Value

OFF
O.L.
O.L.

ON
6.5k Ohms
7.0k Ohms

- SET
2.2k Ohms
2.4k Ohms

+ RES
3.7k Ohms
3.8k Ohms

Cancel
1.4k Ohms
1.6k Ohms

And while you are in the area, you can also make some quick circuit verification.
Ignition OFF, Disconnect the harness connector of the cruise control switch.
Ignition ON, measure for 10 volts or greater at the cruise control supply voltage circuit pin 1/pink wire.
à †’ If less than 10 volts, check for an open/high resistance or for a short to ground on the cruise control supply voltage circuit.

Ignition OFF, test for an open, for a high resistance, for a short to ground, or for a short to voltage in the cruise control switch signal circuit pin 3/gray wire, and also for reference, pin 3 of connector C1(light green 27 pin) at the BCM.
The circuits and the component tests are normal, replace the BCM, I would not replace the BCM without checking further with a scan tool.

As far as symptoms are concerned, are the brake lights functioning correctly, is there any check engine light observed, and are any of the cruise switches possibly sticking, or stuck? There are concerns that can inhibit operation, and it may lead to having that scan tool as mentioned previously.

And while you are in the area, you can also make some quick circuit verification.
Ignition OFF, Disconnect the harness connector of the cruise control switch.
Ignition ON, measure for 10 volts or greater at the cruise control supply voltage circuit pin 1/pink wire.
à †’ If less than 10 volts, check for an open/high resistance or for a short to ground on the cruise control supply voltage circuit.

Ignition OFF, test for an open, for a high resistance, for a short to ground, or for a short to voltage in the cruise control switch signal circuit pin 3/gray wire, and also for reference, pin 3 of connector C1(light green 27 pin) at the BCM.
The circuits and the component tests are normal, replace the BCM, I would not replace the BCM without checking further with a scan tool.
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Friday, March 5th, 2010 AT 10:30 PM
Tiny
MAXX M
  • MEMBER
  • 1 POST
  • 2007 GMC YUKON
  • V12
  • 4WD
  • AUTOMATIC
  • 39,000 MILES
Cruise control won't work fuses are good.
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Monday, July 27th, 2020 AT 11:07 AM (Merged)
Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
Ok first I need to know what kind of Yukon? Is it an XL or Denali or what. What size V-8 engine does it have it isn't a V12. I also need to know if you have a scan tool and or a digital multi meter to do some testing? Let me know what I need to know and we will go from there.
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-2
Monday, July 27th, 2020 AT 11:07 AM (Merged)
Tiny
JUSTYTOMMY
  • MEMBER
  • 1 POST
  • 2004 GMC YUKON
  • 6.2L
  • V8
  • AWD
  • AUTOMATIC
  • 106,000 MILES
I bought this Denali privately and soon learned that the cruise control did not work. I tried everything I knew (which is not much) to get it to work but it wouldn't come on. Then one day when I was towing a utility trailer, the cruise control worked perfectly. Since then I have not towed anything and the cruise control refuses to work. I tried pulling the brake pedal forward while driving, thinking that it may be the brake switch, but that didn't fix anything. Will you please help me?
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Monday, July 27th, 2020 AT 11:07 AM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
This might be a tough one to diagnose without a scan tool that reads live data of all the cruise inputs like brake switch cruise switch next to the brake switch if it has one. Also set/coast resume/acell on off etc. Thats the way I would start is checking all the inputs on the scan tool and see which one is skewed. Also check for codes in the engine computer and the body control module. Again that would take a advanced professional scan tool. Thats a computer control cruise control. Not like the old vacuum ones you could use a test light and vacuum gauge to trouble shoot.
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Monday, July 27th, 2020 AT 11:07 AM (Merged)
Tiny
ALLENEM
  • MEMBER
  • 1 POST
  • 2001 GMC YUKON
  • V8
  • 4WD
  • AUTOMATIC
  • 287,000 MILES
Work fine the night before and the next morning on the way to work it did not checked fuses brake switch all seems fine and jf you push the button many times fast the light on the dash that is on when the cruise is on flashs but no cruise. What do I check nexted?
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+1
Monday, July 27th, 2020 AT 11:07 AM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Follow the troubleshooting steps below. If no problem is found let me know so I can give further troubleshooting procedures...


https://www.2carpros.com/forum/automotive_pictures/261618_Noname_1384.jpg

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Monday, July 27th, 2020 AT 11:07 AM (Merged)

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