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SHEET TO THE SERVICING TECHNICIAN.
PRIOR TO ORDERING THIS PART, THE FOLLOWING MUST BE VERIFIED:
Tech Tip Part Description: NAG1 Transmission Assembly
Tech Tip Description: The NAG transmission uses the wheel speed sensors to calculate transmission output shaft speed. If encountering gear ratio errors or late upshifts, please verify all four tires are of proper size as well as front and rear axle ratios. Mismatched tires can cause the vehicle to think it turning, and thus delay an upshift. Unnecessary transmission replacements have occurred due to a spare tire, aftermarket tire of incorrect size, incorrect axle, or incorrect gearset in proper axle.
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