Complete Drivetrain & Differential Service

The differential allows your wheels to rotate at different speeds during turns. This prevents tire hop, reduces stress on your suspension, and improves handling. Rear-wheel drive vehicles have a rear differential, while front-wheel drive vehicles have a front differential built into the transaxle. AWD and 4WD vehicles often have front, rear, and center differentials.

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Why service it: The gears inside the differential operate under high pressure and require clean, properly lubricating gear oil to avoid wear, noise, and failure. Fluid should be changed regularly to maintain protection and performance.
 

Found on 4WD and AWD vehicles, the transfer case distributes power between the front and rear axles. It allows you to switch between 2WD and 4WD modes or sends torque automatically depending on traction conditions.

Why service it: The transfer case uses special fluid to protect its internal chains and gears. Dirty or low fluid can lead to shifting problems, drivetrain binding, or complete failure.
 

The driveshaft transfers power from the transmission or transfer case to the differential. U-joints (universal joints) allow for flex and movement as the suspension travels. On front-wheel-drive vehicles, CV axles serve a similar purpose.

 Why service them: Worn U-joints or CV joints can cause clunking, vibrations, or total driveline failure. Regular inspections and lubrication (when applicable) prevent costly breakdowns.

Constant Velocity (CV) axles transfer power to the wheels in front-wheel and all-wheel-drive vehicles. The rubber boots protect the joints and keep them lubricated.

 Why service them: Torn boots allow grease to leak out and contaminants in, which causes joint wear and clicking noises during turns. If caught early, the boot can be replaced before the axle fails.

While technically part of the drivetrain, the transmission or transaxle shifts gears and controls how much power goes to the wheels. It’s critical to maintain this unit with fluid changes and inspections to keep the whole drivetrain running smoothly.