Signal light double time
Le Mans Master
Joined: Apr 2006
Posts: 7,158
Likes: 152
From: Chicago IL
One of your bulbs needs to be replaced... Check your left, then right rear turn signals... Both rear lights(per side) should blink... If two blink on one side and only one on the other... who've found the problem! Replace the bulb(less than 5 min. job)
Pro
Joined: Mar 2008
Posts: 553
Likes: 0
From: Cajun Cruise Missile NC/Louisiana
St. Jude Donor '08-'09
Safety Car
Joined: Dec 2007
Posts: 4,070
Likes: 162
From: Coralville Iowa
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Melting Slicks
Joined: Apr 2002
Posts: 2,397
Likes: 55
From: Dove Mountain, AZ
Check your front ones, from what I have seen on other cars if the blinker is blinking faster than normal it is the front. If it is not blinking or is blinking slower, it is the back bulb.
Safety Car
Joined: Jul 2004
Posts: 3,867
Likes: 307
From: Wantagh,L.I. New York
Probably not the bulb, but check it anyway. More likely the socket. Clean the socket and bulb contacts with sandpaper. Put dialectric silicone in the socket and try it. There is a GM TB on this but it requires replacing the entire harness.
Le Mans Master
Joined: Oct 2007
Posts: 8,396
Likes: 15
Or it could be the ball bearings in the muffler!