Gmlan wiring
#1
Gmlan wiring
I moved my fuse box and ecm behind my front bumper and have been having issues with the wiring. I read somewhere that you can not add any length of wire to GMLAN wiring. Any one know if this is correct and what issues it may cause? I of course extended these wires.
#4
Mod with training wheels
iTrader: (16)
Could be the reason, yes. Twisting prevents crosstalk on paired data wires. If they aren't twisted it is likely interrupting communication between modules on each side of the non-twisted section. Pull back the loom on the OE harness, you'll see what I mean. Try to match the twist rate from the stock harness when you fix it.
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#8
smokeshow your a lifesaver I twisted the 2 sets of tan and tan/black ( for some reason put brown in the previous post) wires and now have power to my fuel pump. Do you by chance know how many sets of gmlan wires there are I want to make sure I find them all and get them fixed. Been fighting this problem for almost 2 weeks now. I'm sure there will be more but I'm getting there. Thanks for helping.
#10
I moved the fuse box as well so every connector under the hood was moved to behind the bumper. I'll just unloom everything and check for twisted wires. I only have a couple more mysteries 3 purple/white wires going to the back of the truck I need to find where they start and end . I need to check continuity and make sure they are connected correctly before I try and start the truck for the first time.