03 Silverado mirror replacement

[Mike Miz]

Hi folks,

I have an 03 Silverado that I want to replace the stock mirrors with tow mirrors. Currently the mirrors are powered but no heat or turn signal and I do have the DL8 code listed on the sheet in the glove compartment. My question is if I buy mirrors with power, heat and turn signal is the turn signal going to work? I know that the heat will operate off the rear window defrost but is there wiring already in the door panel for the turn signal option?  I now the last time I had the door panel off there are 3 sperate plugs and an open port for something to plug into it but Im not sure what. Any ideas what that open port could be for? or is there a RPO code that would indicate theres an option there for a turn signal in the mirror?  I dont really need the turn signal in the tow mirror its just an option that I would like to have considering how folks drive here in NY and dont pay attention 98% of the time while on the road.

Any information you guys/ gals can give me would be greatly appreciated- Thanks Mike

[dna9656]

You may find the wires there behind the mirror, just remove the triangular trim piece in the corner of the door glass to check.