The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Passenger upper taillight bulb does not flash.

95 S_Trucker · 02-07-2020, 01:54 PM

It’s a dual filament bulb. One filament for the running light, another for the turn signal/brake light. Most likely one of the filaments is burnt out. Replace the bulb and see what happens.

02-07-2020, 01:54 PM	#2
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,179	Re: Passenger upper taillight bulb does not flash. It’s a dual filament bulb. One filament for the running light, another for the turn signal/brake light. Most likely one of the filaments is burnt out. Replace the bulb and see what happens.