Pursuit wrote: ↑Thu May 13, 2021 10:27 am
On the flasher module, there can/should be a switched 12v source to activate the headlight flasher portion. The BCM circuit is a switched ground (from the flasher module) to activate the tail light/reverse light alternating flasher. DO NOT put 12v on the BCM circuit. Some agencies will intercept that BCM circuit to activate only the rear flashers by installing a switch-to-ground. That option and wiring diagram is shown in the GM technical manuals.
Maurice
Yeah, I was able to get it powered up and working, I need to add the circuit back into the fuse box that supplies power to the flasher. I would like to see if maybe I can get a custom BCM program that will keep the lighting config from the PPV, while everything else from the SS. I was trying to avoid custom modules but I have reached out to WAMS and I am waiting for a response. Worst case, I lose the tail flashers but everything else I can keep.
On that same note, with the headlight harness differences and the upfitter wiring for the strobes now missing, I ran some new wires for later use out from the cabin while everything is apart. The large grommets going through the firewall are extremely tedious to unloom, and honestly I'm not sure there is sufficient room to stretch the grommet for another bunch of wires. So I went out the base of the A pillar, through the factory grommet for the side markers (that we don't get). From there I can easily pass it through the inner fender structure, and out into the engine bay. This works out great because it is completely hidden in the engine bay as well, since it comes out behind the headlight on the driver side.
I've been kicking around what to start on next, as my carpet has been delayed a couple days. I want to drop the rear cradle, to add the electronic parking brake, but I don't have the floor space for that yet. I also want to start tearing in the LS3, but same issue. So I decided to tackle the doors, which I've been putting off.
While examining wiring diagrams, I noticed that the SS has an actuator motor for the child lock function. So when you press the window lockout button, it automatically activates the child lock on the handle so the doors won't open from the inside. I decided I wanted to keep this as well if possible. I have to swap the door harnesses anyway, to get the wiring for the passive entry button.
I gutted the driver rear SS door, including the door latch. The lock rod and door pull cable come attached to it. Laying it out next to the PPV latch you can see that both the lock rod is a different shape, and the door pull cable is much longer.
I was
not excited about the proposition of taking apart the latches - but it turns out this part was very simple. The lock rod isn't even held in with a clip, it is just rotated into place to lock it. And the whole plastic cover doesn't have to come off for the door cable, there is a small hatch that opens up for cable removal. I'm assuming they do this to either use the same latch in many applications, or because when you buy a replacement latch it doesn't come with these parts. Either way, it made the SS -> PPV latch swap very simple.
Before reinstalling anything into the PPV door, I installed my sound deadening into the door shell. Hopefully it makes a nice difference.
With the PPV components installed on the SS latch, I reinstalled it and the door harness. I compared length beforehand and they were nearly identical. Of course, due to the differences in how it is routed internally in the door, the SS harness came up a little short to the speaker, and the window motor. Everything else reached fine and about 2/3 of the clips were able to be re-secured. I changed the routing of the harness slightly, and I was able to make everything reach without having to lengthen any wires. I will need to add some additional loom on the window motor wire to make sure it doesn't chafe and I will secure the rest of the harness up to the missing clip locations.
Now that the process is down, the passenger rear door should be much faster. I'm not sure I can do the fronts yet as I can't open the front doors all the way on the lift. Oops. This will be a little more complicated as well as I think there are some modules in the door as well as the mirrors that will be needed.
Lastly, I also threw on the SS trunk carpet. Slight modification needed but the major components line up and it came with the car so I'm going to use it! Planning on doing something similar with the underhood liner when the time comes.
Until next time ...