Question about 2008 Chevrolet Trailblazer
Right signal works fine;but left only works sometime
It's likely that moisture intrusion over time has corroded the socket and/or the base of the bulb causing an intermittent open circuit.
Clean the socket with a small tubular shaped wire brush* and compressed air. Install a new bulb.
*The wire brush used to clean the inside of a 1/2" copper tube fittings prior to soldering. Hardware & Home Improvement stores have them.
Posted on Dec 12, 2014
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Posted on Jan 02, 2017
I have a 2002 Chev Cavalier that had the same exact problem. I replaced the bulb harness (purchased from a chevy dealership for around $5) which was fairly easy to do. I have had zero problems with it since.
Posted on Dec 03, 2008
the switch in the column has dirt in it or is coming apart most likely.always replace bulbs and flasher(s)
first ,then column switch before spending any money on signal diagnosis. for 15$for bulbs,flasher,20-40$switch,you 90%would have solved problem. gino r.
Posted on Mar 22, 2009
Have you tried replacing the flasher? You'd think neither side would blink if the flasher was bad but I've seen this happen and it turned out to be the flasher. You could swap the signal flasher with the 4 way flasher to verify that's the problem before going out and buying one. Should be a few bucks at the parts store.
Posted on Apr 16, 2009
The circuit boards in Chevrolet tail lamps ar notorious for going bad. Dorman makes a replacement circuit board, part number 70006 . the same part number will fit either the left or right side of your Trailblazer.
Posted on Nov 24, 2010
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