txab replied to Nitrousbird's topic in 2014 - 2018 Chevy Silverado & GMC Sierra*Cleaned up thread* Stay on topic
Sounds like actuator issues. You've got 4 of them. *Thanks Swathdiver* No heat from any vent until you cycle off/on? Does the passenger side get warm, but drivers side stays cold? If so, the culprit actuator is on the passenger side above the trans tunnel. Fairly easy to replace. Several threads cover it. Also many Youtube videos as well
You can try using Chevron Techron Fuel System cleaner, use a double dose to start. See what happens. You may need to try another tank doctored with Techron. It works in some cases. Hopefully it will clear up, but if not, then you're replacing the sending unit
Did you not look up how much a total fill of the transmission would take? 12 qts. So really more than 12 qts would be good to have on hand since you're actually going to pump out/remove some fresh fluid in the process getting "all of the old" changed out If you plann to change out all the fluid this is one thing to look into prior to starting. Not scolding you, just making the point for the next guy.
Any chance you've got auto climate control? Try it one more time. This time for longer period. Remove both cables at battery and touch them together. Reinstall and key on....... With acc your fan speed should change and airflow should be re-directed from vents if the calibration is going correctly. You may have a bad head unit or need to have it scanned for codes or recalibrated using a scan tool
Have you disconnected the battery for a bit then re-connected to force a re-learn? Or try this: Remove the HVAC/ECAS fuse for a minimum of 10 seconds. Re-install the HVAC/ECAS fuse Turn key on, but do not start. Make no adjustments to HVAC controls at this time Wait 40 seconds for the HVAC control module and actuators to re-calibrate. I've always had the best luck at this point by turning key off. Removing key and closing the door. (Signals the BCM of a completed driving cycle)
Most OnlineNewest Member
Who's Online 80 Members, 1 Anonymous, 795 Guests (See full list)
- Shane T.
- Penguin VII
- Denny Owens
- 99 2500
- Rodney Truck
- Nanotech Environmental