Expert GMC Yukon 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.
2000 - 2006: 4L60-E on 5.3L; 4L80-E on heavy-duty Yukon XL. 2007 - 2013: 6L80 six-speed on 5.3L; 6L90 on 6.2L. 2014 - 2020: 6L80 on 5.3L; 6L90 on 6.2L. 2021 - 2024: 10L80 on 5.3L; 10L90 on 6.2L. 4WD: Autotrac transfer case (NV246 or BorgWarner).
Yukon transmissions are identical to Silverado and Sierra of the same year. Full 6L80 rebuild with pump replacement is the primary repair for warm-slipping Yukons. TCC shudder on 8-speed and 10-speed models starts with fluid exchange.
6L80/6L90 uses Dexron VI. 10L80/10L90 uses Dexron HP. 4L60-E uses Dexron VI. Transfer case uses AutoTrak II.
6L80 rebuild: 3 - 4 days. 10L80 rebuild: 3 - 4 days. Transfer case: 1 - 2 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.
Identical - Tahoe and Yukon share the same transmissions across all generations. Same parts, same repairs, same pricing.
If it's a 6.2L Denali or any V8 model with 8L90 or 10L80, TCC shudder is the likely cause. Dexron HP flush is the first step.
3 - 4 business days. We stock 6L80 rebuild kits.
4L60-E sun shell failure. Full rebuild required: $1,500 - 2,100.
Yes - we frequently service the transfer case and transmission simultaneously on Yukons used for towing.
Same-day appointments available. Honest estimates, no surprises. We've been doing this since 1987.
