Transmission History by Year - Jeep Gladiator
2020+: ZF 8HP75 8-speed automatic (3.6L Pentastar V6 and 3.0L EcoDiesel) Manual: Tremec TR3650-derived 6-speed (3.6L only)
Expert Jeep Gladiator transmission service in Chicago. Free computer diagnostic, 2-year / 24,000-mile warranty on rebuilds, all years.
We will contact you as soon as a service member is available by call, text, or email.
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 - change every 40,000 miles
Verify exact spec on the dipstick label or owner's manual before fill. Recommended change interval: every 60,000 miles for normal driving, 30,000 miles under severe service (towing, stop-and-go, hot climates). Pan service typically takes 6 - 8 quarts; a full fluid exchange takes 10 - 14 quarts depending on cooler-line capacity.
Rebuild: 3 - 4 days.
Fluid service and inspection complete the same day. Solenoid or sensor replacement: 1 day. Torque converter or seal repair: 2 - 3 days. Full rebuild with road test: 4 - 6 days. Time estimates assume parts in stock - call (312) 626-8759 to verify availability for your specific vehicle.
Every vehicle needs diagnosis before anyone can promise a repair path. These are the situations we help organize before you decide what to do next.
Tell us when it happens, whether reverse still works, and if warning lights are on. A scan and fluid check come before guessing at a rebuild.
Fluid condition, leak location, and driving distance matter. If the vehicle is slipping badly or overheating, towing may be the safer next step.
A failed solenoid, valve body, converter, or internal clutch problem can lead to very different repair paths. The goal is a clear diagnosis and written estimate.
Yes - 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.
3 - 4 days.
Yes - the 6-speed is a good trail transmission. Shift fork wear is possible with aggressive trail use.
Yes - any year Gladiator, automatic or manual.
Same-day appointments available. Honest estimates, no surprises. We've been doing this since 1987.
