I was double parked and had my hazards light on as well as my interior lights.
I noticed that the interior lights were blinking slightly alongwithmy hazard lights .. is this wierd or what , or just the way GM make their trucks..

Well if anybody has the same problem let me know ..

 

I've never had the problem of double parking!
When you made this observation, I assume your engine was not running, so the draw to the flasheres transfered to the interior light circuit and each time the flashers were lit by the batteryyour interior lights dimmed, not a biggy. More surprising with the engine running and the alternator powering the system, but still not a problem.

 

engine was running and radio on

 

I had a GMC 4x4 a while back with underdrive pullies (slows down the AC and alternator), andeverything would dim withjust aturn draw signal when sitting idle at a stop with the lights on, that was extreme. I'll go to lunch and put my flashers on. Just the nature of the beast as far as I know.

 

not sure,never even tried it before

 

Could be a weak alternator!

 

Most likely a voltage regulator that is not performing up to spec.

 

Getting double parked sucks and thats strange that the interior lights were blinking

 

mine dose it too