My Chevy VAN Express 2003 has a blinker problem..
Turning the steeringcolomnhandle to the left both blinkerlights left and right start to blink.
Turning the steeringcolumnhandle to the right only the right blinkerlight start to blink(as normal)
Switchunit has already been replaced..
any suggestions?
greatings from the netherlands

 

Probably the signal cancelling mechanism is broken. You will likely need to pull the steering wheel off (needs special tool) and check inside.

 

Could that also be a bulb issue? If the left dual filament bulb is bridged it can route power to the right parking light...Does the right bulb flash the same brightness as the left one when you put the left turn signal on?

 

OK I misunderstood the original post. I thought he was turning the wheel and lights were coming on. Now I see "steeringcolumnhandle" means the signal lever.

Yes, check the bulbs.

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