Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Description And Operation: Driveshaft
The driveshaft assembly consists of the following:
- Rubber isolated center support bearings
- CV joint at the Power Transfer Unit (PTU)
- U-joints at the center support and pinion flange
- Assembly balanced with traditional balance weights
- Lubed-for-life joints requiring no periodic lubrication
The driveshaft transfers torque from the PTU to the rear axle. It is attached to the PTU flange with a CV joint. The driveshaft is connected by a staked U-joint at the center bearing and attached to the rear pinion flange. The driveshaft joints allow the smooth continuous rotation of the driveshaft through the allowable angle planes and length variations required in normal vehicle operation. The driveshaft is always turning at front wheel speed. The driveshaft is not serviceable. A new driveshaft must be installed if worn or damaged.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.