mirror option codes

99 burb.

i need the option codes in the glove box so I know what mirror to buy.

Not sure if it has auto dim or not.

thanks

If you have the auto dim mirror,you should have a seven pin connector on the windshield side of the mirror.also there will be a light sensor on the same side.
On the mirror side the will be a switch with a green LED on the right side and a glare sensor on the left side.
RPO codes:
DDO-LH&RH outside heated electrochromic
DD7-rearview light sensitive,compass
DF5-rearview,electrochromic,compass and outside temp.
I hope this helps.I need help in troubleshooting my auto-dim feature on my suburban.If you have any knowledge in this area,please post message,thanks

Chuck's