I have a 04 chevy blazer two door. I need to program the remote that I have,...

...Without going to GM. ? i can't get any of them to work it has keyless entry, and the other instructions that i have found online have not worked and havent worked for other blazer remoters, I just want my remote done. So if someone can tell me how it would help me alot i will give you MAJOR points! Thank you!
If you have any questions please respond to this and include your email. I'll add more details if needed i do have the vehicle inquire slip so it states it has remote keyless entry, so just tell me how to program it myself. The ones i found online relally didnt work. so yeah.
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