Lost Cruise Control Set Button

[Jhwhite05]

Hey everyone.
2009 Yukon Xl, 5.3 4WD.

Today I pushed my cruise control “set button” only to discover it stopped working.

I’d really appreciate your advice for fixing it! We do a lot of long road trips, and cruise control is a game changer for us.

What do you think is going on?

 

[tooleyondeck]

do you have aftermarket tail lights?

 

[Jhwhite05]

do you have aftermarket tail lights?

No.
Interesting connection, though. What was your thought?

 

[tooleyondeck]

No.
Interesting connection, though. What was your thought?

It is a known issue that LED tail lights will disable your cruise on certain models, I'm not sure if the 900s were affected by this. The system checks for resistance at the tail lights and with LEDs having much lower pull, the system thinks your brake lights are out and therefore won't engage cruise. The fix is typically resistors at both brake lights.

In your case I would start with the fuse, then check your steering wheel switch and brake light switch. Here is a video regarding the brake light switch issue:

 

[Jhwhite05]

It is a known issue that LED tail lights will disable your cruise on certain models, I'm not sure if the 900s were affected by this. The system checks for resistance at the tail lights and with LEDs having much lower pull, the system thinks your brake lights are out and therefore won't engage cruise. The fix is typically resistors at both brake lights.

In your case I would start with the fuse, then check your steering wheel switch and brake light switch. Here is a video regarding the brake light switch issue:

That’s really helpful. Thank you. I’ll check that!

 

[Geotrash]

Hey everyone.
2009 Yukon Xl, 5.3 4WD.

Today I pushed my cruise control “set button” only to discover it stopped working.

I’d really appreciate your advice for fixing it! We do a lot of long road trips, and cruise control is a game changer for us.

What do you think is going on?

Super common to have the brake pedal switch fail on these also. Try pressing the pedal lightly while driving with no one behind you, and letting it slam back to the top of its travel as your foot slips off. Then try engaging the cruise. If it works, it's your brake pedal switch for sure.

 

[OR VietVet]

Yep, they beat me to it. Check the connection at the brake light switch and of course the fuses.

More Information for GM GENUINE D1539J

 

[Joseph Garcia]

The issue is not the the LEDs on a 900. I've got LEDs with no resistors, and my cruise control works fine.

As stated above, check the brake light switch next.

 

[Jhwhite05]

Super common to have the brake pedal switch fail on these also. Try pressing the pedal lightly while driving with no one behind you, and letting it slam back to the top of its travel as your foot slips off. Then try engaging the cruise. If it works, it's your brake pedal switch for sure.

Ok! I will try that and report back!

 

[Just Fishing]