Front, rear, and all-wheel differential repair, rebuild, and fluid service for all makes and models. Differential problems cause noise and vibration that worsens until the unit fails — catch it early.
"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."
A whining or howling noise that changes with speed (not with steering) is the most reliable indicator of differential bearing or gear wear. Clunking on acceleration/deceleration points to worn U-joints or differential gears.
Every 30,000–50,000 miles depending on use. Trucks that tow or go off-road: every 25,000 miles. Many owners skip this service entirely — don't.
That's limited-slip clutch pack wear — the clutches that govern how power splits between rear wheels in a turn. Clutch pack service ($300–550) usually resolves it.
Yes — and this is the most cost-effective approach. We can service both at the same time, sharing setup and labor time.
In Chicago, the most common causes are: neglected fluid changes, water contamination (common after deep puddles), and towing beyond rated capacity. All are preventable.
Honest estimates. No surprises. Written warranty on every job. Mon–Fri 7:30am–6pm · Sat 8am–4pm.
