Part Number Help

[mjdxtreme]

I have been searching for several hours and need some help. I need to have my mirrors redone on my truck as I think I have some busted tabs on my drivers mirror because it is really loose. So with the research I have done. I know I have the dl3 which are the power, heated, with turn signals and driver dimming mirror. I have found several part numbers some that say for 07-08 and 09-10. My question is are these part interchangable between the 07-08 to 09-10 as the 09-10 part number is cheaper than the 07-08. I want to make sure that there was not a wireing harness change or something the would prevent them from working. Any help would be appreciated Here are the part numbers

 

25775835 Right DL3 mirror for 07-08

25831035 Left DL3 mirror for 07-08

 

20756890 Left DL3 mirror for 09-10

20756891 Right DL3 mirror for 09-10

 

Are there any difference in the different years and parts. Can I order the 09-10 and put them on my 08 sierra denali. I tried to use compnine's website but it does not appear they have the 09-10 part number. I would like to try to save some money as they will not warrenty them because an non gm company painted them so they are passing the damage off to them. Thanks for you help in advance.

[mjdxtreme]

There are no part gurus out there that can provide some info in if these are the same parts that are interchangeable and they just gave them new part numbers. Any help is appreciated