Hey guys,
I have a 2017 Silverado High Country and I installed a 6in Fabtech lift with 35in nitto tires back in September 2017 and since then I've been having issues with my cruise control disengaging/turning off at anything above 69mph. When I'm traveling above 69mph, cruise control will turn on and illuminate on the dash, but it wont engage or lock on. Even when I have the cruise set at 65mph and I try to increase the speed to 70mph, it'll immediately cut off/disengage.
I took it to the dealership around January 2018 and they told me since the truck has bigger/heavier tires, the computer is reading the wheels going slower than what it reads on the speedometer. They basically said I need to recalibrate the computer to read the new tire size. BUT, a friend of mine also said I could possibly need to re-gear to 4.56 since I'm running heavier tires, which could fix the cruise control cutting off.
If anyone has experienced this issue, you help will be greatly appreciated. Thanks guys.
Thanks for the input, but I’ll definitely try changing out the wheel speed sensors. I’ve been wanting to re-gear anyways so hopefully that will fix it if the speed sensors don’t. Do you think if I tell the dealership that the wheel speed sensors are malfunctioning they’ll replace them?