* Loose wiring: Check the wiring connections to the dash lights and gas gauge. Make sure they are tight and secure.
* Faulty voltage regulator: The voltage regulator controls the amount of voltage that is supplied to the electrical system. If it is faulty, it can cause the dash lights to flicker and the gas gauge to not work.
* Bad alternator: The alternator charges the battery and supplies power to the electrical system. If it is bad, it can cause the dash lights to flicker and the gas gauge to not work.
* Damaged instrument cluster: The instrument cluster is the assembly that houses the dash lights and gas gauge. If it is damaged, it can cause the dash lights to flicker and the gas gauge to not work.
If you are not comfortable troubleshooting electrical problems, you should take your vehicle to a qualified mechanic for diagnosis and repair.
