We all know that the 8 speed transmission is a problem child.. Let's hear from those who have not yet had problems and how many miles on these.. Mine so far (knock on wood) has been good and smooth in every aspect.. 3400 miles with fingers crossed!
That is more than likely the issue.. The BCM monitors the resistance for flashing and DIC messages.. The manufacturer of the lights you installed should have a solution for this..
Help: passenger side front parking light not working, but blinker does...Also have right rear turn indicator failure...
Hillwood replied to CareTruck's topic in 2014-2018 Silverado & Sierra TroubleshootingIn the rear you can swap bulbs with one that works. Make sure the socket is clean. No green corrosion. Same with the front. Any green stuff is a problem. The trailer wiring uses separate fuses. Check all the fuses in the under hood fuse block.. They are labeled on the cover.
If you had the right scan tool, you could pull HVAC codes, look at your actuator and sensor data. If you replace an actuator, it needs to be calibrated with a scan tool. Playing the guessing game, I would say it is a temperature actuator. If you have dual control there are 4 actuators in the system. Mode, recirculation, left temp, right temp. My advice is to get a proper diagnosis. How much time and money are you going to spend throwing parts at it?
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