Get rid of service 4wd light
#1
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Join Date: Jan 2016
Location: Savannah, Georgia
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Get rid of service 4wd light
Hey, I have a 1999 Silverado, truck had a 4wd 4l60, now has a 2wd 4l80. I removed all 4wd components. I never used the 4wd so when trans went, I wanted to upgrade to an 80 an didn't want 4wd anymore. So anyways, I'm trying to get the service 4wd light to go off in the message center in gauge cluster. I'm not sure if I can swap to a 2wd bcm or if there is even a difference in the two or what I need/can do. Any help would be greatly appreciated. Thanks
#5
TECH Junkie
iTrader: (9)
Ha ha I have seen that video before and was thinking of it before you posted it.
But seriously, GM had some bad solder in those years that could be the culprit. See if you can find someone with a functioning system of the same year and see if they will let you swap the switch in the dash to see if it temporarily corrects the problem. If you cant, remove the switch and resolder every connection on the back. I had a 99 Silverado and the 4WD would not work. I resoldered every connection and it work fine again.
But seriously, GM had some bad solder in those years that could be the culprit. See if you can find someone with a functioning system of the same year and see if they will let you swap the switch in the dash to see if it temporarily corrects the problem. If you cant, remove the switch and resolder every connection on the back. I had a 99 Silverado and the 4WD would not work. I resoldered every connection and it work fine again.
#6
Custm2500's Rude Friend
iTrader: (17)
Hey, I have a 1999 Silverado, truck had a 4wd 4l60, now has a 2wd 4l80. I removed all 4wd components. I never used the 4wd so when trans went, I wanted to upgrade to an 80 an didn't want 4wd anymore. So anyways, I'm trying to get the service 4wd light to go off in the message center in gauge cluster. I'm not sure if I can swap to a 2wd bcm or if there is even a difference in the two or what I need/can do. Any help would be greatly appreciated. Thanks
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#8
TECH Fanatic
Remove 4x4 Fuse in underhood block. Disconnect battery for 30 seconds. Voila! no more 4x4 light or message. As far as your truck computer is concerned it is now a 2wd.
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