2015 Silverado HVAC mode select solenoid replacement

[HunterHartley]

When I’m running my heater, the mode changes on its own (Defrost, to vent). They said it was a short, and a solenoid needs to be replaced. I can’t find any information for the mode actuator, or solenoid. Everything is about the blend actuator, which is different. I’m looking for part numbers and schematics, or better yet, video on how to fix this. They wanted $230 to fix it, but I’m handy enough. Thanks in advance!!

[davester]

The relatively cheap, definitive resource for info like that is the full-service manual.  online subscription at a site like alldatadiy.com