P0623 Buick Generator Lamp Control Circuit

P0624 Buick Fuel Cap Lamp Control Circuit

Possible causes
– Fuel cap circuit open or short circuit condition
– Fuel cap circuit poor electrical connection
– Fuel cap circuit bulb faulty
– Instrument cluster faulty
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick Terraza – Buick Riviera