Morphy72

Hi all, I have a few codes for my dads 2005 Sierra 5.3l 4x4, reg cab. that I cannot find anywhere. They are on the glovebox so obviously they are for something... Hopefully someone can help out. The mystery codes are as follows: R6L R6M R6Y R7K R7M R9Z UB0 VCG XJP YJP ZJP 6YH 7YH Thx for looking! Hopefully someone can help!

Was thinking of LED interior lighting change/upgrade (*blue or red*), surprised nobody has done this to the new body style interior! If anyone has, and can let us know where to buy from that would be great!!

My 2019 RST 5.3L has them, I noticed by accident as I normally seen the radiator when I was cleaning it but seen the shut louvers instead! Definitely temp sensitive as they were open all summer. Saves the hassle of putting in the ol cardboard before the temp drops to -40C, lol.

I would like to know what the pricing is for the autodim mirror upgrade as well. And part #. My RST came with a crappy manual mirror as well. Would love to upgrade it to 'at least' an auto dim feature.