Expert Toyota Sequoia transmission service in Chicago. Free computer diagnostic, lifetime warranty on rebuilds, all years.
2001β2007: 4-speed automatic (A343F) on 4.7L V8. 2008β2022: 6-speed automatic (AB60F) on 5.7L V8. 2023β2024: Hybrid e-CVT on 3.4L twin-turbo V6 hybrid (new platform). 4WD: A340F or AB60F transfer case on 4WD models.
The Sequoia is Toyota's heaviest SUV and is frequently used for maximum towing β 8,900 lbs in some configurations. This puts far greater stress on the AB60F than typical family SUV use. Fluid changes every 30,000 miles are essential for towing applications. Solenoid and valve body repairs can often be done without a full rebuild. Transfer case chain wear is common and best addressed concurrently.
AB60F uses Toyota ATF WS. A343F uses Toyota ATF Type T-IV. Transfer case uses Toyota transfer case fluid. Change every 30,000 miles for towing use.
AB60F solenoid: 1β2 days. AB60F rebuild: 3β4 days. Transfer case rebuild: 2 days.
"Honest diagnosis, fair price, and the repair was done right. Chicago Transmission has been my go-to for years. Wouldn't trust anyone else with my car."
"The free diagnostic alone was worth the trip. They found the problem fast, gave me a written estimate, and completed the work on time. Exceptional service."
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Likely AB60F solenoid wear under sustained tow load. Get a diagnostic β often repairable for $550β900 before a full rebuild is needed.
Every 30,000 miles if you tow regularly. Toyota's standard recommendation isn't calibrated for maximum-capacity towing.
Transfer case chain wear β very common on 4WD Sequoia over 150k. Transfer case rebuild: $1,200β1,800.
Too early for definitive data β the 2023 platform is new. The twin-turbo hybrid system is a departure from Sequoia's traditional 5.7L V8. Fluid maintenance is critical from day one.
3β4 business days.
Same-day appointments available. Honest estimates, no surprises. We've been doing this since 1987.