P0816 Buick Short In Transmission Gear Selection Switch Upshift/Dowshift Switch Circuit
Possible causes
– Faulty Transmission Gear Selection Switch
– Transmission Gear Selection Switch harness is open or shorted
– Transmission Gear Selection Switch circuit poor electrical connection
– Transmission Gear Selection Switch harness is open or shorted
– Transmission Gear Selection Switch circuit poor electrical connection
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