the reverse light switch is either out of adjustment. or broken. new one should be fairly cheap
presuming you've checked all the fuses and relays theres a sender switch on the transmission should have 2 wires attached to it.. make sure the wires are not disconnected or damaged
Defective reverse light switch.
Check your fuses
I have no dash lights or gage lights that come on in my 1982 corvette, what could be the problem ? i checked all fuses.
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If the reverse lights are not working on a 1999 Chevy Suburban, be sure to check the fuse panel. If all the fuses are in working order, check the wires for any loose connections. Faulty wires can result in little or no light input.
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If the headlights are not working correctly on a 1990 Corvette, the fuses or lights could be going out. Replace the old fuses and check that all wires connected to the lights are functioning correctly.
I have a 1991 Chevy surburan and it has no tail lights and no dash lights, all fuses are good
have you checked the bulbs and fuses
check for blown fuses
The problem is the reverse light switch. It is located on the top of the transmission that should sloved your problem.