Pontiac Repair: 2000 pontiac montana, fuel system treatment, pontiac montana

Question
hello, i just purchased my vehicle used and the headlights,dash lights and radio lights are blinking while the engine is running also my fuel gauge is not reading properly it's always reading full,if you can please help me rectify this problem it would greatly be appreciated!!!! thank you!

Answer
Hi Meridith:

The alternator needs a volatge regulator. very common issue with that vintage Van. As well as the fuel gauge. It needs a level sensor car of the fuel pump module in the tank. when you have that replaced about 2 X a year use a bottle of GM fuel system treatment. It has an additive that will "help" protect the level sensor for wearing out. The additives in the fuel make the level sensor go bad on the card in the tank. Good luck :)