I have an 05 GMC Yukon Denali and it's having trouble going into second gear

What is your question?

I have a 2005 GMC Yukon Denali and it's having trouble going from first to second while driving and I was told it could be a dirty transmission filter does that sound correct and is there any tips that I should know before getting it changed

How long has your 2005 GMC Yukon XL 1500 had this problem?

A few days