2018 Chevy Silverado 4wd service lights on
I have a 2018 Silverado 1500 LTZ 6.2 L gas. 150,000 miles on the truck.
8L90 transmission (POS).
My 4wd Service Light just came on.
It will not allow me to enter any of the 4wd modes at all.
I do use the truck for the beach, but I have not been on the beach since
May of 2025 and no need to be in 4wd since then.
Is there any way i can troubleshoot this myself. what is recommended?
a. Personal Mechanic
b. Chevrolet Service center?
Any help will be greatly appreciated.,
Happy Holidays
Lou
8L90 transmission (POS).
My 4wd Service Light just came on.
It will not allow me to enter any of the 4wd modes at all.
I do use the truck for the beach, but I have not been on the beach since
May of 2025 and no need to be in 4wd since then.
Is there any way i can troubleshoot this myself. what is recommended?
a. Personal Mechanic
b. Chevrolet Service center?
Any help will be greatly appreciated.,
Happy Holidays
Lou
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dann0
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Aug 25, 2017 9:56 AM





