Transmission & Drivetrain Repair in DeKalb, IL

Transmission and Drivetrain Services

• Transmission service and maintenance
• Transmission repair
• Transmission and drivetrain diagnosis
• Drivetrain inspections
• Transfer case service for four-wheel-drive vehicles
• Fluid leak inspection

Shifting problem or new noise?
Call 815-758-7425
Request an appointment online
303 N 7th St, DeKalb, IL 60115
Monday–Friday, 7:30am–5:30pm

Transmission Warning Signs

• Delayed engagement when you shift into drive or reverse
• Harsh, late or erratic shifts
• The engine revs but the vehicle does not accelerate as it should (slipping)
• A shudder or vibration during acceleration
• Whining, humming or grinding noises
• Red or brown fluid on the ground under the vehicle
• A burning smell
• A transmission warning light or a check engine light

None of these symptoms identifies the cause by itself. Each one tells a technician where to start looking. Our guide to the signs of transmission trouble explains each symptom in more detail.

Transmission Service and Repair

The transmission is the most complex and tightly controlled system in your vehicle. It depends on clean fluid at the correct level, on hydraulic pressure and, in modern vehicles, on electronic controls and sensors. Regular maintenance is critical to keeping it reliable, and our technicians perform transmission maintenance according to the manufacturer’s requirements for your vehicle.

When a transmission is not behaving normally, the cause is not always inside the transmission. Low or worn fluid, a leaking seal or cooler line, a sensor or wiring fault, or an engine problem can all change the way a vehicle shifts. We check those possibilities first, because they are far less involved than internal repairs.

If the inspection shows a serious internal problem, we tell you plainly what we found and go over your options before any decision is made.

Drivetrain Problems Beyond the Transmission

Transfer Case

The transfer case is the power transfer unit found on most four-wheel-drive vehicles. It distributes power to two or all four wheels. Signs of trouble include difficulty shifting into or out of four-wheel drive, grinding noises, fluid leaks and binding or hopping in tight turns.

Differentials

A differential lets the wheels on the same axle turn at different speeds through a corner. Worn differential fluid or worn gears and bearings can cause a whine or howl that changes with speed, or a clunk when you shift between drive and reverse.

Driveshafts and U-Joints

On rear-wheel-drive and four-wheel-drive vehicles, driveshafts carry power to the axles. A worn universal joint often shows up as a vibration that gets worse with speed, or a clunk or squeak when the vehicle starts moving.

Axles and CV Joints

Front-wheel-drive and all-wheel-drive vehicles use axle shafts with constant-velocity joints. A clicking noise in tight turns, grease thrown onto the inside of a wheel, or vibration under acceleration can point to a worn joint or a torn protective boot.

Drivetrain Inspections

A drivetrain inspection is the starting point for any shifting, noise or vibration complaint. During an inspection we:

• Ask what the vehicle is doing and when it happens
• Check transmission fluid level and condition where the vehicle allows it
• Look for leaks at seals, gaskets, lines and housings
• Check driveshafts, joints, axles and boots for wear and play
• Scan for stored fault codes related to the transmission and its controls
• Road test the vehicle to confirm the symptom

We then explain what we found, what needs attention now and what can wait.

Call 815-758-7425 or request a drivetrain inspection online.

How Drivetrain Problems Are Diagnosed

Many drivetrain symptoms overlap with other systems. A vibration under acceleration can come from an axle, a driveshaft, an engine misfire or a tire. A harsh shift can be mechanical, hydraulic or electronic. On modern vehicles the transmission is managed by a computer, so a failing sensor or a low system voltage can cause shifting complaints with nothing mechanically wrong.

For that reason, diagnosis usually combines a road test, a physical inspection and a scan of the vehicle’s computers. Our diagnostic service covers warning lights and fault codes, and our electrical system repair covers the wiring and voltage problems that sometimes sit behind a shifting complaint.

When to Have Your Transmission or Drivetrain Inspected

• Right away: the vehicle will not move in gear, slips badly, leaks a large amount of fluid, or a flashing warning light appears.
• Within a few days: a new noise, a harsher shift, a small leak, a vibration or a steady warning light.
• At the scheduled interval: transmission, transfer case and differential fluid service as listed in your owner’s manual.
• Before towing season: if you tow or haul, have the fluids and driveline checked first.

Towing, Hauling and Four-Wheel Drive in Northern Illinois

Trucks and SUVs that tow, haul or run in four-wheel drive put more heat and load into the transmission, transfer case and differentials. Manufacturers generally treat this as severe service and call for shorter fluid intervals. Winter driving in snow and slush, and the road salt that comes with it, also adds wear on seals, joints and boots. Checking the driveline as part of regular preventative maintenance helps catch leaks and worn parts early.

Why DeKalb Drivers Choose Bill White’s Car Hospital for Drivetrain Repair

• ASE certified technicians
• Service for domestic and import cars, SUVs and light trucks
• Honest, upfront explanations of repairs and costs
• Shuttle service available (some restrictions apply; call for details)
• Comfortable waiting area with free WiFi and coffee
• Financing available

Check our current specials before you book.

Transmission and Drivetrain FAQs

What are the signs of a transmission problem?

Common signs include delayed or harsh shifting, slipping out of gear, a shudder during acceleration, whining or grinding noises, a burning smell, red or brown fluid under the vehicle and a transmission or check engine warning light. Any of these is a reason to have the vehicle inspected.

Is it safe to drive with a slipping transmission?

It is not a good idea. A transmission that slips can lose drive unexpectedly, and continued driving usually makes the damage worse. Have it inspected before driving further than you need to.

How often should transmission fluid be serviced?

It depends on the vehicle and how it is used. Service intervals vary widely between manufacturers, and towing, hauling and stop-and-go driving shorten them. Your owner’s manual lists the interval for your vehicle, and we check the schedule for your specific year, make and model.

What is the difference between the transmission and the drivetrain?

The transmission is one part of the drivetrain. The drivetrain is everything that carries power from the engine to the wheels: the transmission, and depending on the vehicle, the transfer case, driveshafts, differentials, axles and CV joints.

Does a transmission warning light mean I need a new transmission?

No. A warning light means the vehicle’s computer has detected a fault. The cause may be low or worn fluid, a sensor, wiring, a control issue or an internal problem. Testing is needed to find out which.

Do four-wheel-drive and all-wheel-drive vehicles need extra service?

Yes. They have a transfer case and usually two differentials, each with its own fluid that wears over time. Vehicles that tow, haul or are used in four-wheel drive often generally need that fluid serviced sooner.

How much does transmission repair cost?

It depends entirely on the cause, which can range from a fluid service to major internal work, so we do not quote a transmission repair without inspecting the vehicle. We explain what we found and the cost before any work begins.

How do I schedule drivetrain or transmission service in DeKalb?

Call 815-758-7425 or use the contact form on our website. Bill White’s Car Hospital is at 303 N 7th St in DeKalb and is open Monday through Friday, 7:30am to 5:30pm.