The discrepancy has been corrected and new part numbers are being generated. This particular truck is a 2017 silverado 2500 according to the gm upfitter website it is.
2018 Chevrolet Silverado 3500hd Work Truck 1gb3cycg5jf289844
2018 silverado upfitter switches wiring. They are written to inform these technicians of. Ill post a pin out. Switch bank on the silverado medium duty 450055006500 md replaces the standard. Aux switch install facebook. Optional 9l7 upfitter switches four 12 volt 30 amp relay controlled battery power circuits may be present in the vehicle. You can bypass the x61a altogether and go directly from the s48a to the x50a through the little nipple on the large boot on the firewall behind the x50a.
The switches can be configured pairwise to be ignition switched or constantly powered. These switches are configurable such that they can provide either battery or ignition 12v outputs. The configuration be it for battery or ignition is done in pairs. You are likely missing the wiring between the aux switch s48a and the junction block down by the pedals x61a and then out from the x61a to the underhood fuse box x50a. 2014 2018 silverado sierra mods. This is a quick video on where to connect to the factory aux switches on the silverado work truck model.
You can get upfitter switches that go where your traction. 10122018 preliminary information pit5298c installation of upfitter auxiliary switches. So i soldered two connectors onto the board to get a connection point. The relays are operated via instrument panel switches located on the lower center instrument panel below the heating and air conditioning controls. Each connector has two wires and each wire will go to a different switch and relay. Upfitter switch 9l7 service parts retrofit kits.
The following relay load circuits are terminated in icem connector x7 as listed. Pins 10 14 are for he aux switched. 12 affected products vehicles make model year chevrolet silverado 2017 chevrolet silverado 1500 2014 chevrolet silverado 2500 2015 2016 2018 2019 gmc sierra 2017 gmc sierra 1500 2014 2016 2019 gmc sierra 3500 2018 bulletin no. As i read it the wires may be blunt cut with rpo e29 or terminate in the x61a instrument panel junction block without rpo e29. Gm upfitter integration technical bulletins are intended for use by professional technicians not a do it yourselfer. The auxiliary switches are referred to as rpo 9l7.
Figure 11 shows the location of the upfitter wire harness pass through. The configuration is accomplished by the relocationof two fuses in the under hood electrical center uec. It has recently discovered that there is a problem with the list of contents for the upfitter service parts retrofit switch kits for vehicles that were not ordered or built with the 9l7 option.
Gallery of 2018 Silverado Upfitter Switches Wiring
