Turn Signals Flashing after accident repair

[hottoy]

My 2002 Avalanche 1500 failed to avoid the Interstate center median on a recent trip to Indiana.   I had to replace the Right Rear taillight and Front right fender and grill headlight plastic support (Radiator core support was fine.)  After completing the repair I now have a problem when using my turn signals.  Intermittently all signals flash even though the signal is set to only left and right.  They tend to flash faster than normal when the problem occurs.  Sometimes they work fine.   I suspect I failed to reconnect a ground but where?   I have one ground connected to a bolt on the drivers side core support slightly behind the toe hook.   I believe there might have been a second gnd wire at that location but I cannot find it.  Can someone else look up at the core support of there 2002 Avalanche thru the drivers toe hook bumper hole and tell me it they have one or two wires connected and details on were the other gnd goes?    If anyone has any other ideas I would love any possible alternative thoughts on the problem.   I have changed bulbs a couple times and changed the turn signal flasher.    Flashers seemto work fine problem is only onturn signals.  problem seems wores when the lights are on.

Thanks

[hottoy]

Any help out there on this problem???

[MS03 2500]

See if this helps.

http://www.chevyavalanchefanclub.com/cafcna/index.php/topic,45638.0.html