21’ Tahoe Tranny Fluid Flush vs Tranny fluid change and change filter

[ivin74]

Pricey. I just had my 10 speed in my 2021 Yukon serviced for $250. Just pan service and filter though. I think I'm going to do 30k intervals on my Yukon.

Thats cheap, around here it's $500.

You sure it wasn't just a flush? Oem oil and filter it self is $200 bucks.

 

[fondupot]

Thats cheap, around here it's $500.

You sure it wasn't just a flush? Oem oil and filter it self is $200 bucks.

Positive. I asked. They drop the pan. Change the filter. And top off with fresh fluid.

 

[jerry455]

I am putting a drain plug in mine. I tried to suck some out the other day and only got less than 2 quarts. I guess that side plug is not a straight shot into the pan. It is amazing that the directions tell you to shake up the new fluid before putting them in. I will probably wait until the spring to drop the pan. I have seen some videos on doing this. One of them used a pry bar on the exhaust crossover in stead of dropping it and sneaking the pan out.

 

[fr8bil]

Picked up this one-owner 2018 Yukon Denali with the 6.2 and 10 spd. with 132k on it last Feb. but it was super clean and well cared for and very "tight". One thing I was unable to determine with CarFAX was to find any record of a tranny service so took it over to the nearby GMC dealer I've done business with for 14 years. Service advisor wildly under-quoted their tranny-flush price by $200 and told me the 10 spd. had an external filter. Once the service was complete and I got done bitching them out for the price mis-quote, they said this vehicle's tranny did NOT have the external, OEM filter on it. No idea if that was added later in the 2018 model year or if the guy had no idea what he was talking about.

 

[WalleyeMikeIII]

https://static.nhtsa.gov/odi/tsbs/2024/MC-11011205-0001.pdf

That document should answer the question about Flush vs. Drop Pan, change filter, refill.