![]() ![]() I got some activity when jumping pin D to pin M (BCM) 2006 Chevrolet Silverado 1500 LS, ECM/Inputs/Outputs Waveform The other pins stayed at 0V, except for pin K. 2006 Chevrolet Silverado 1500 LS, ECM/Inputs/Outputs Schematic I cross referenced the wire colors of SP205 with a schematic, and jumped pin D, which goes to the DLC, to the other wires. 2006 Chevrolet Silverado 1500 LS, ECM/Inputs/Outputs Photo Luckily GM was nice enough to install a splice pack to make our lives easier on these 2006 Chevrolet Silverado 1500 LS, ECM/Inputs/Outputs Photo Removing the shorting bar I can easily check each circuit. 2006 Chevrolet Silverado 1500 LS, ECM/Inputs/Outputs Waveform I know that I should be seeing 7 volts and at least some activity, but this was flat lined at nearly 5 volts. I plugged in a DLC break out box and scoped pin 2 with KOEO. A code scan on a Snap On Modis Ultra and the Tech 2 network test would not communicate with any module.Ī DLC schematic 2006 Chevrolet Silverado 1500 LS, ECM/Inputs/Outputs Schematic shows me that it's a simple, low speed Class 2 data bus. The customer complaint was that the dash was inoperative and there were numerous warning lights illuminated. After many classes and forum posts, I was quite excited to dig into it. "This system, and possibly the issues, are likely old news to many of you, but it was my first time getting a broken data bus on a GM. Posted to Technical Tips Forum on 23 Replies ![]()
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