Jeep Wrangler Transmission Repair Chicago
Expert Jeep Wrangler transmission service in Chicago. Free computer diagnostic, lifetime warranty on rebuilds, all years.
Expert Jeep Wrangler transmission service in Chicago. Free computer diagnostic, lifetime warranty on rebuilds, all years.
2003–2006: 42RLE 4-speed automatic (4.0L) 2007–2011: 42RLE continued (3.8L V6) 2012–2018: W5A580 5-speed automatic (3.6L Pentastar V6) 2019+: ZF 8HP75 8-speed automatic (3.6L V6 and 2.0T) Manual: NSG370 6-speed (JK and JL) — all years
42RLE: solenoid pack replacement ($500–750). W5A580: solenoid or valve body. ZF 8HP75: valve body or rebuild. NSG370 manual: shift fork and synchro rebuild.
AT: ATF+4 (42RLE, W5A580) or ZF Lifeguard 8 (8HP75) Manual: Mopar NSG370 manual gear oil
Solenoid: 1–2 days. Rebuild: 3–4 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."
Almost certainly the 42RLE solenoid pack if you have a 2003–2011 JK. Solenoid replacement is $500–750 and restores normal operation.
Yes — the 8HP75 is a strong unit. The extra gears improve crawl-speed control. It does need ZF Lifeguard 8 fluid at 40k-mile intervals.
Usually yes — the NSG370 3-4 shift fork wears under hard off-road shifting. A synchro and fork rebuild is $1,000–1,600.
Yes — we service Wrangler transfer cases and can do transmission + transfer case simultaneously.
The manual is simpler mechanically but the shift fork and synchro issues are common with trail use. The automatic is more expensive to rebuild but requires less driver skill off-road.
Same-day appointments available. Honest estimates, no surprises. We've been doing this since 1987.
