Driveshaft Repair in Glendale, AZ

Sun West Transmissions — Glendale, AZ. Free estimates, honest diagnosis and a 3-year / 40,000-mile warranty on qualifying rebuilds and replacements.

The Link Between Your Transmission and Axle

On rear-wheel-drive, four-wheel-drive and many all-wheel-drive vehicles, a driveshaft carries power from the transmission or transfer case to the differential. It is a balanced steel, aluminum or composite tube with universal joints or constant-velocity joints at the ends, and on longer vehicles it may be split into two pieces with a center support bearing in between.

Because the driveshaft spins at high speed, small problems quickly turn into vibrations you can feel through the floor and seat. Left alone, a worn joint can fail and drop the shaft, which is dangerous at freeway speed. Driveshaft repair in Glendale, AZ fixes the problem while it is still a vibration or a noise.

Signs of Driveshaft Problems

• Vibration that increases with speed, often felt through the floor or seats
• Clunk when shifting into Drive or Reverse, or when getting on and off the throttle
• Squeaking at low speeds that sounds like a chirping bird, a classic sign of a dry U-joint
• Shudder on acceleration from a stop, sometimes from a worn center bearing or incorrect driveline angles
• Clicking or knocking when turning or accelerating
• Visible play or rust dust around a U-joint cap

Common Driveshaft Repairs

U-Joint Replacement

Universal joints allow the driveshaft to flex as the suspension moves. Their needle bearings wear, dry out or lose their seals, especially on lifted trucks and vehicles that see off-road use. See our U-joint replacement page for details.

Center Support Bearing

Two-piece driveshafts on full-size trucks, extended-cab pickups and vans use a rubber-mounted center bearing. The rubber cracks and the bearing wears, causing vibration and clunks.

Slip Yoke and Splines

The slip yoke slides in and out of the transmission or transfer case as the suspension moves. Worn splines cause clunks, and a worn yoke surface can damage the output seal and cause a transmission leak.

CV-Style Driveshafts

Some trucks, SUVs and AWD vehicles use constant-velocity joints on the driveshaft. Torn boots let grease out and dirt in, leading to wear.

Balancing and Straightening

Driveshafts are balanced with small weights. A lost weight, a dent from road debris, or a bent tube creates vibration. Damaged tubes can sometimes be repaired, while others need a new shaft.

Driveline Angles Matter

A driveshaft works best when the angles at each end are within a certain range and cancel each other out. Lifting or lowering a truck, worn transmission mounts or sagging leaf springs can change those angles. The result is vibration, often on acceleration, and faster joint wear. We check angles when vibrations do not clear up after joint replacement, and we can recommend corrections such as shims or adjustable components.

Our Driveshaft Inspection and Repair Process

1. Road test to identify the speed and conditions when vibration or noise occurs.
2. Inspect on a lift for play in U-joints, center bearing condition, yoke wear and damage to the tube.
3. Check related components including the differential pinion, transfer case outputs and mounts.
4. Replace worn joints, bearings or yokes with quality parts.
5. Mark and reinstall the shaft in its original orientation to keep balance and phasing correct.
6. Road test to confirm the vibration or noise is gone.

When Vibration Is Not the Driveshaft

Tires out of balance, bent wheels, worn suspension parts, a failing wheel bearing and even engine or transmission mounts can cause vibrations that feel like a driveshaft problem. Torque converter shudder can also feel like a vibration at certain speeds. We look at the whole picture. If the issue is converter shudder, see our torque converter replacement page.

Driveshafts on Front-Wheel-Drive Vehicles

Front-wheel-drive vehicles use CV axles instead of a long driveshaft. Clicking in turns or vibration on acceleration usually points to the axles. Learn more about CV axle replacement.

Safety Comes First

A loud clunk, a new heavy vibration, or a grinding sound from under the vehicle can mean a joint is close to failing. If a U-joint lets go, the shaft can drop, damage the vehicle and cause loss of control. If you notice these symptoms, slow down, avoid freeway driving and call us at (623) 473-9800.

Driveshaft Repair FAQ

Why did my vibration start after a lift kit?

Lift kits change driveline angles. Correcting the angles or using a different driveshaft design usually solves it.

Can a driveshaft be rebalanced?

Yes, when the tube is straight and undamaged, balancing can be done after new joints are installed.

How much does driveshaft repair cost?

It depends on the vehicle, the parts needed and whether the shaft must be replaced. Call (623) 473-9800 for a free quote.