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3 identical black and yellow wires. I've spliced all the others, can't get the actuator behind the glovebox working.

I ended up finding the issue after getting the dash off and tracing wires. Something chewed the wiring up right up behind the mode actuator, near the firewall. I'll probably have to yank the HVAC case to access the other end to splice it. What a nightmare.

I've found a wiring diagram, and haven't been able to find any faulty wiring. This has me scratching my head. I have power going to the HVAC control module, but the actuators aren't working. Just trying to save myself from taking off the steering column to get the dash off but I might have no choice. According to my diagram, all the actuators are tied in through the black/yellow wire and grey/red.

The vin is 3GCUKRECXFG269517

I couldn't find an RPO for C67 or C42. I have C49 listed in my glovebox. Tried yanking fuse 26 on the driver side interior fuse box to perform an HVAC reset, still nothing. Seems like I'm not getting any power to the actuators.

Hey everyone, Parked my 2015, left for work for 6 weeks, came home and found some sort of rodent made a nest in the cabin filter. All was well, but my HVAC Actuators aren't working. I tore most of the dash apart, removed the filter, blower motor, etc to access the mess they made behind the dash and got that all cleaned up. I ordered some new actuators, plugged a new one in and the actuator itself won't work. I can move the cam with my hands and everything works and is free. All I can think of is somewhere down the circuit, the wires may have gotten chewed. But what's strange is that none of the actuators themselves seem to be working. I believe there's 3. Driver blend, passenger blend and the mode actuator located to the left behind the glove box. None will work. I've attempted to locate a fuse, changed all the ones I could find related to AC/HVAC. Anyone have any ideas where to start? I've got 60% of the dash apart, but before I commit to a full teardown I figured I'd post here and get some advice. Even a wiring diagram for the blend doors would go a long way. Thanks!

Bleed at the master rather than the brakes.

I rotated the distributor once again 180° and it started to struggle. Rotated the cap a few times till it started up and dialed it in till it was close. Still don't know what originally happened after replacing the distributor in the first place but seems like I fixed it myself. Gonna close the hood now till next week when my timing light comes in.

Hey everyone. I picked up a 92 GM K1500 4.3l V6 last year. Used it for hunting season, parked it in the yard and went to move it the next day and wouldn't start. Changed the distributor as per Haynes manual and now it won't start due to what I suspect is timing being out (backfires). Reset to TDC today via second timing mark, pulled cap off distributor and was a full 180° out. Pulled distributor, rotated 180°, put back together and verified plug wires were in correct order (6,5,4,3,2,1 as per Haynes manual). Tried to crank and still backfires. Reset to TDC, pulled cap off distributor and am again at 180° out. Now I'm really scratching my head. I pulled the harness for the timing bypass and followed procedure to what I think is a T but I just can't figure it out. Any help would be appreciated!