Why does my GM car heater not shut off?
Why does my GM car heater not shut off? In some cases in cold weather the blower motor may not run, or if it does, it may not shut off when you turn off the vehicle. The TSB applies to the following vehicles with automatic temperature control: GM has identified the blower motor control module as the cause for the failure. What to do if your Chevy Suburban heater is not working? A word of caution: If there is no coolant in your overflow, you can refill it by adding more to the overflow reservoir. There is almost never a...