Where is the HVAC/ECAS fuse in a 2016 Silverado?

[sage55]

The wife turned down her side of the air conditioning the other day and since then the AC now only blows lukewarm air. Messing around with this I've found the compressor is still dripping water so I don't believe it's a coolant issue, but I've read that re-setting/re-calibrating the hvac can fix this. In older (2014 and older) there is a HVAC/ECAS fuse to pull for about 1 minute - problem is there is no hvac/ecas fuse in the engine compartment that I can find.

 

any idea what fuse to pull?

[tbarn]

Fuse #26 driver side ip fuse block. Labeled peps/hvac.

 

Alternate Method (without Scan Tool)

Note: Do not operate any HVAC controls while the HVAC control module is calibrating as this may interrupt the process. If interrupted, improper HVAC performance will result.

1. Ignition OFF/ Vehicle OFF.
2. Remove the HVAC control module fuse for a minimum of 10 s.
3. Install the HVAC control module fuse.
4. Start the vehicle.
5. Wait 40 s for the HVAC control module to self-calibrate.

[sage55]

18 hours ago, tbarn said:

Fuse #26 driver side ip fuse block. Labeled peps/hvac.

 

Alternate Method (without Scan Tool)

Note: Do not operate any HVAC controls while the HVAC control module is calibrating as this may interrupt the process. If interrupted, improper HVAC performance will result.

1. Ignition OFF/ Vehicle OFF.
2. Remove the HVAC control module fuse for a minimum of 10 s.
3. Install the HVAC control module fuse.
4. Start the vehicle.
5. Wait 40 s for the HVAC control module to self-calibrate.

 

Thanks. I found this same fuse shortly after I created this post. In fact I've removed both Fuse 22 & 26 on the driver side fuse box for about 1-2 minutes. Re-installed both fuses and started the truck. After about 2 minutes I turned the temp up, and hot air blew out. Turned it down to 60 and the coldest air I can get to blow out is 72 degrees per my temp gun.

 

Looks like I gotta take this into the dealer.

[Ed S]

On 7/6/2021 at 3:54 PM, sage55 said:

 

Thanks. I found this same fuse shortly after I created this post. In fact I've removed both Fuse 22 & 26 on the driver side fuse box for about 1-2 minutes. Re-installed both fuses and started the truck. After about 2 minutes I turned the temp up, and hot air blew out. Turned it down to 60 and the coldest air I can get to blow out is 72 degrees per my temp gun.

 

Looks like I gotta take this into the dealer.

Vent door actuators are a known issue to fail on these trucks that can cause your issue. Actuators are behind and under the dash. Dealers want a fortune to replace. They will tell you whole dash has to come out. There is a couple YouTube videos out that show you how to replace them yourself with a shortcut so you don't have to remove dash. Good luck.