4WD and AWD transfer case repair, rebuild, and service for all trucks, SUVs, and crossovers. When 4WD stops working — or starts making noise — the transfer case is usually the reason.
"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."
Both can cause similar symptoms. A transfer case problem usually shows up specifically when 4WD is engaged, or as a noise/vibration from the center of the vehicle. Transmission problems are usually felt in shifting under all driving conditions. Our free diagnostic pinpoints the source.
A Power Transfer Unit (PTU) is a small transfer case used in AWD crossovers (Ford Explorer, Ford Escape, Volvo XC60, Land Rover LR2). Failure symptoms: whining noise from center of vehicle, AWD warning light, vibration. Very common and often neglected.
Yes — this is the ideal time. When we pull the transmission, the transfer case is right there. Combined service saves 2–4 hours of labor.
A flashing 4WD light usually means the encoder motor (the actuator that physically shifts the transfer case) has failed. The encoder motor is a separate, replaceable component — not a full transfer case replacement.
Depends on make and model. GM trucks: Auto-Trak II. Jeep/Dodge: Mopar transfer case fluid. Ford: Mercon. Using the wrong fluid causes premature chain and pump wear. We stock all correct specs.
Honest estimates. No surprises. Written warranty on every job. Mon–Fri 7:30am–6pm · Sat 8am–4pm.
