No left rear turn signal. replaced the bulb and still doesn't work. I have been told to replace the rear socket and would if I could only find one that fits. Does anyone know what the OE part number is, or a universal socket that actually fits in the lamp assembly? I would prefer it have the pigtails so I can just do it quickly as possible.
Thanks for your help.

2011 express van 1500
4.3v6
base model

 

I assume you have ruled out the fuses, under the drivers seat. There is one for left and one for right. Also, it could be a bad ground in the socket or corrosion on the pins..... Have you used a test light to check continuity at the socket?

Failing all that, sure replace the socket. It just seems odd for a 8 year old van.

 

Pretty sure it's the socket. it looks like one of the contacts is missing from one side of it on the inside of the socket. The problem is getting the correct socket to put in. The one's that I looked at don't fit in the lamp assembly, nor do they come with the 2 wire harness to connect to it. doesn't look difficult,just can't find the right parts

 

The bulb can fit 180 degrees out of position. Try turning it around.