Expert Jeep Gladiator transmission service in Chicago. Free computer diagnostic, lifetime warranty on rebuilds, all years.
2020+: ZF 8HP75 8-speed automatic (3.6L Pentastar V6 and 3.0L EcoDiesel) Manual: Tremec TR3650-derived 6-speed (3.6L only)
ZF 8HP75: same as Wrangler JL. ZF Lifeguard 8 fluid maintenance is critical. Diesel Gladiator: more aggressive service intervals for towing use.
ZF Lifeguard 8 β change every 40,000 miles
Rebuild: 3β4 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."
"Family owned and it shows. They treated my car like it was their own. The lifetime warranty on my rebuild gives me total peace of mind. Highly recommend."
Yes β the JT Gladiator uses the same ZF 8HP75 as the JL Wrangler. Identical repair procedures and pricing.
The diesel Gladiator's higher torque stresses the 8HP more under towing. More aggressive fluid change intervals (30k miles) are recommended.
3β4 days.
Yes β the 6-speed is a good trail transmission. Shift fork wear is possible with aggressive trail use.
Yes β any year Gladiator, automatic or manual.
Same-day appointments available. Honest estimates, no surprises. We've been doing this since 1987.