'90 k1500. I'm wondering if it is a common occurence for the 'bulb
boards' inside of the rear tail light housings to go bad.
Heres the problem: The bulbs light up with the headlights on, so I know
they are getting power. If go for a left turn, the left front light
flashes rapidly, the rear does nothing. If I brake, the left rear does
not brighten, however they stay lit the whole time. All this time the
right side lights worked fine. I had switched the left and right hand
side boards, and the problem followed to the right side.
A visit to a junkyard got me a used board, and its doing the exact same
thing, I've interchanged light bulbs, tapped and shook, cursed, nothing
changes. I'm figuring I have two faulty boards. Before I throw money at
a new one, any other suggestions? The board looks non-serviceable and I
couldn't think of any way to test its internals. Thanks for any info.