my headlights or dimmer headlights won't turn off when key is removed
Headlight relay~ https://www.google.com/#q=2002+Chevrolet+Express+G1500+Passenger+ Van+headlight+relay&tbm=shop
....else the GROUND is clobbered up with corrosion...you might take the black 1/0 cable from where it attaches to the ground.....wirebrush the lug...wirebrush the chassis for FULL grounding potential to all devices....including the ECU~
Judge Roy is right on again. My question to you, did you use the correct replacement? If you have a timer delay, it may take a different switch. Always clean the connections before putting in new replacement parts, especially electrical. The older ones develop electrical corrosion around the connectors over time and a lot of times, cleaning of the existing parts is all that is needed to do fix and/or repairs. 000 emery paper and a good electrical cleaner such as as-atone spray will work clean the connections.
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