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<blockquote data-quote="Brennb" data-source="post: 21808" data-attributes="member: 6375">The severe service schedule shows service every 45000 miles. I had the dealership do it once (drain and refill 6qts), and it was just north of $100. That seamed like a great deal from the dealership, however I had been to the shop twice, complaining about another issue that I thought was transmission related.I don't think GM reccomends a full transmission Flush. Just mutiple (3) drain and refills, with a few miles driven between changes.I do it myself now. The drain plug is accessable from the front without jacking. The fill cap is a little difficult to reach depending on motor. If the Transmission hasn't been serviced, and hasn't leaked, just use a measuring device to drain, and refill with the same amount. No need to check the fluid level, which is another task in of itself. I think the last time I did it, it was about $40+ for fluid. I tend to do it once every other oil change now.</blockquote>

[QUOTE="Brennb, post: 21808, member: 6375"] The severe service schedule shows service every 45000 miles. I had the dealership do it once (drain and refill 6qts), and it was just north of $100. That seamed like a great deal from the dealership, however I had been to the shop twice, complaining about another issue that I thought was transmission related. I don't think GM reccomends a full transmission Flush. Just mutiple (3) drain and refills, with a few miles driven between changes. I do it myself now. The drain plug is accessable from the front without jacking. The fill cap is a little difficult to reach depending on motor. If the Transmission hasn't been serviced, and hasn't leaked, just use a measuring device to drain, and refill with the same amount. No need to check the fluid level, which is another task in of itself. I think the last time I did it, it was about $40+ for fluid. I tend to do it once every other oil change now. [/QUOTE]

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