Expert Chevrolet Tahoe transmission service in Chicago. Free computer diagnostic, lifetime warranty on rebuilds, all years.
2000β2006: 4L60E (standard) or 4L80E (optional with 6.0L Vortec) 2007β2013: 6L80 6-speed automatic β standard on all engines 2014β2020: 6L80 continued; 8L90 added for 6.2L engine option 2021+: 10L80 10-speed automatic
Same transmission diagnosis as Silverado β Tahoe shares all transmission components. Transfer case chain wear is a separate but common companion repair we frequently do at the same time as transmission work.
6L80: Dexron VI β change every 40,000 miles Transfer case: Auto-Trak II β change every 50,000 miles
Transmission rebuild: 3β4 days. Combined transmission + transfer case: 4β5 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."
Likely the NP261 or NP263 transfer case chain β not the main transmission. Chain wear causes a distinct clunk when 4WD engages. We service both at the same visit.
Yes β identical transmission, same rebuild process and pricing.
It's a 4L60E sun shell failure β rebuild required ($1,500β2,000). Not an emergency repair but do not drive it β you risk secondary damage.
3β4 business days.
Yes β we strongly recommend servicing the transfer case chain when pulling the transmission. They're adjacent components and combined service saves labor.
Same-day appointments available. Honest estimates, no surprises. We've been doing this since 1987.