My reverse lights are not working, checked bulbs and back up lamp fuse, all ok!
SOURCE: 2003 silverado 1500 p/u my reverse lights are not
Check the neutral start/backup light switch on transmission. Block the wheels and raise truck up enough to get under on drivers side. It will be a round black plu g with 3 wires going to it. Remove the plug from switch. have someone to shift the transmission into reverse.Using an ohm meter check for continuity between the outer two post on switch. If you find continuity between the two outer post only in reverse on the switch then the switch is good. Also check for continuity between outer post on switch to transmission case. There should be no continuity. Hope this will help you.
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