How to change coolant and trans fluid on 04 yukon Vortec?

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a4edwin

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What would you guys recommend for flushing with if I plan on going to Full Synthetic ATF?
I did the flush Scotty posted but didn't change the filter. Switched to synthetic with no problems. Had a little slip before the flush and it went away. I've done about 10k miles with no problems.
 

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