Hi,
The cruise control not functioning can be the result of a few different things. It could be something as simple as a faulty brake light switch or as involved as the steering wheel module coil, PCM, and so on.
If you haven't already, I do recommend having the can-bus scanned to determine if there are codes related stored in one or more of the modules. CAN stands or controller area network. Basically, the different modules are tied together via a few wires. This type of scan will retrieve codes regardless of the module storing them.
Here is a link that shows how it is done:
https://www.2carpros.com/articles/can-scan-controller-area-network-easy
Next, I attached the diagnostics for the system below. Take a look through the directions and let me know if this is something you are comfortable performing.
Let me know.
Take care.,
Joe
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Saturday, September 7th, 2024 AT 7:19 PM