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4R70W Service - Warranty Requirement?
What is really required to keep my warranty in effect? The owner's manual says "change trans fluid" at 30,000 miles. The dealer offers a "drain and fill" for $75.00 up to a "complete flush and fill" for $150.00 (I assume the latter includes the torque converter). I realize that the complete service is best long term, but if I am not going to keep it forever and want to meet the requirement to keep my warranty going to 36,000 miles, what do I really need?
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