Transmission History by Year - Jeep Grand Cherokee
1999 - 2004: 45RFE 4-speed automatic (4.0L and 4.7L V8) 2005 - 2010: 5-45RFE or 545RFE 5-speed automatic 2011 - 2021: 8HP70 or 8HP75 ZF 8-speed automatic 2022+: 8HP75 ZF 8-speed continued
Expert Jeep Grand Cherokee 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.
1999 - 2004: 45RFE 4-speed automatic (4.0L and 4.7L V8) 2005 - 2010: 5-45RFE or 545RFE 5-speed automatic 2011 - 2021: 8HP70 or 8HP75 ZF 8-speed automatic 2022+: 8HP75 ZF 8-speed continued
545RFE: Solenoid pack replacement resolves most limp-mode situations ($550 - 800). If internal damage from extended limp-mode driving, full rebuild needed ($1,600 - 2,100). ZF 8HP: valve body repair or rebuild depending on damage. NV241: chain replacement during same visit as transmission work saves significant labor.
545RFE: ATF+4 - use only Mopar ATF+4, no substitutes ZF 8HP: ZF Lifeguard 6 or 8 - change every 40,000 miles NV241: Mopar transfer case fluid
Solenoid: 1 - 2 days. Rebuild: 3 - 4 days. Combined with transfer case: 4 - 5 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.
On a 2005 - 2010 WK with 545RFE, limp mode is almost always the solenoid pack. Clear codes, restart, and bring it in. Solenoid pack replacement is $550 - 800.
No - we rebuild ZF 8HP transmissions at the same quality as the dealer for 35 - 50% less cost. Harsh shifts on the ZF 8HP are usually valve body solenoid wear.
Likely the NV241 transfer case chain - not the main transmission. Very common on 2005 - 2010 Grand Cherokee. We service both at the same time.
Yes - ZF Lifeguard 6 (for 6HP) or Lifeguard 8 (for 8HP). Using standard Dexron or ATF+4 in a ZF unit causes solenoid failure.
3 - 4 days for main transmission. 4 - 5 days if doing transfer case simultaneously.
Same-day appointments available. Honest estimates, no surprises. We've been doing this since 1987.
