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It should be under hood on driver side..remove cover and it should show you which one it is.There is also a flasher under dash on driver side that can be checked
check and see if you have power to your switch, it might just be a fuse. worse case is you'll have to change the actual lights. was it starting to get dimer and dimmer?
Sorry there is no fuel pump reset on the Tahoe. If you have no fuel pressure, check the fuses and relay,and wire harness to the fuel pump from the inside frame rail on the drivers side.
If you can hear the fuel pump working, check the fuel pressure at the shredder valve and there should be 60 to 66 PSI, if you don't you can try checking for 12 volt at the fuel pump wire harness at the frame rail.
Good luck and keep me posted, be glad to help.
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