Loading...

Gmc K1000 Drive Shaft Center Support Bearings

Gmc K1000 Drive shaft center support bearings

Starting at $7.95, AutoBuffy stocks 5 drive shaft center support bearings from Anchor. This rubber-encased ball bearing mounts mid-shaft on two-piece driveshafts, holding the shaft in precise alignment while absorbing vibration. When it wears out, the bearing collapses or seizes, allowing the driveshaft to whip and vibrate — eventually damaging the shaft, U-joints, or transmission output seal.

Signs your Gmc K1000 needs a new drive shaft center support bearing

  • A rhythmic vibration or shudder felt in the floor or seat that increases with vehicle speed
  • A squealing, grinding, or chirping noise from underneath the cabin that changes with throttle or deceleration
  • A clunking or thudding sound when accelerating from a stop or during gear changes
  • Visible cracking, crumbling, or oil saturation in the rubber isolator bracket surrounding the bearing
  • Grease or rubber debris accumulating on the underside of the vehicle near the center of the driveshaft
  • Excessive play or wobble when you grab the driveshaft by hand with the vehicle safely raised on jack stands

Which drive shaft center support bearing should you buy for your Gmc K1000?

The main decisions are whether to buy the bearing alone or as a complete assembly with the rubber isolator bracket, and whether to choose OE-equivalent or heavy-duty construction. For most owners, a complete assembly is the better value because worn rubber and a worn bearing almost always fail together. If your Gmc K1000 tows, hauls, or sees off-road use, a reinforced or greaseable heavy-duty unit will outlast a standard replacement.

Bearing Only (loose ball bearing)
Best for
Rebuilders who are re-pressing onto an existing bracket in good condition
What you get
Lower upfront cost; requires pressing tools and a serviceable original rubber mount
Complete Assembly (bearing + rubber isolator)
Best for
Most DIYers and daily drivers replacing a fully worn unit
What you get
Bolt-on replacement; new rubber dampens vibration and eliminates a hidden failure point
OE-Equivalent Assembly
Best for
Drivers who want to restore factory ride quality and noise levels
What you get
Matches original stiffness, bracket geometry, and fit; sourced from brands like Anchor
Heavy-Duty / Greaseable Assembly
Best for
Trucks, SUVs, and vehicles used for towing, hauling, or off-road driving
What you get
Reinforced rubber isolator, higher load rating, and a grease fitting for extended service life

Drive shaft center support bearings brands we stock for your Gmc K1000

Anchor
5 options · from $7.95

Replacing the drive shaft center support bearing on a Gmc K1000

Moderate⏱ 1–2 hoursFloor jack and jack stands or a vehicle liftSocket set and breaker barPenetrating oil for corroded fastenersMarker or paint pen for driveshaft alignment marksHydraulic press (only if installing a bare bearing onto a bracket)

Before unbolting anything, scribe or paint alignment marks across every driveshaft slip joint and U-joint flange so the shaft goes back in the same rotational position. Support the driveshaft with a transmission jack or a length of wire so it doesn't hang and stress the U-joints while you remove the center support bracket bolts. Install the new assembly, torque the bracket fasteners to the manufacturer's specification, realign all marks, and lower the vehicle for a test drive to confirm the vibration is gone.

Frequently asked questions

How much does it cost to replace drive shaft center support bearings on a Gmc K1000?
Parts start at $7.95 on AutoBuffy. A complete assembly typically costs more than a bearing alone but saves labor time because no pressing is required. Shop labor generally runs one to two hours. Total cost varies depending on driveshaft configuration — rear-wheel-drive vehicles with a two-piece shaft are the most common application.
Can I drive my Gmc K1000 with a bad center support bearing?
Driving with a failed center support bearing is not recommended. Once the bearing collapses or seizes, the driveshaft runs out of alignment and generates severe vibration. Continued driving can destroy the U-joints at both ends of the shaft, damage the transmission output seal, or cause the driveshaft to separate — a serious safety hazard.
How long does a drive shaft center support bearing last on a Gmc K1000?
Service life varies widely depending on driving conditions, load, and whether the original unit was greaseable. Under normal highway use, center support bearings commonly last many years, but towing, off-road use, or water and mud exposure accelerates rubber deterioration and corrosion. Inspect the rubber isolator at every major service interval for cracking or oil contamination.
Do I need to balance the driveshaft after replacing the center support bearing on my Gmc K1000?
If you are replacing only the bearing assembly and reinstalling the original driveshaft in the same orientation — using your alignment marks — balancing is generally not required. If the driveshaft is removed, disassembled, or a new shaft is installed, professional driveshaft balancing is recommended to eliminate residual vibration at highway speed.
Is replacing a drive shaft center support bearing a DIY job on a Gmc K1000?
A complete bolt-on assembly replacement is within reach for a mechanically experienced DIYer with basic hand tools and a safe way to raise the vehicle. The main challenges are breaking loose corroded fasteners and keeping the driveshaft properly supported to avoid stressing the U-joints. Pressing a bare bearing onto a bracket requires a hydraulic press and is better left to a shop.
What causes a drive shaft center support bearing to fail prematurely on a Gmc K1000?
The most common causes are water intrusion and contamination from road salt or mud, which corrode the bearing and degrade the rubber isolator. Missing or torn driveshaft guards accelerate this. Towing beyond the rated capacity, hard off-road use, and a lack of lubrication on greaseable units also shorten bearing life significantly compared to normal highway driving.

Shop drive shaft center support bearings by year for the Gmc K1000

1966

More parts for your Gmc K1000

Engine Cooling Fan Switch ConnectorStarter Brush SetDistributor CapHVAC Harness ConnectorNeutral Safety SwitchPower Steering CoolerIgnition CoilRadiator Cap

Drive shaft center support bearings for other Gmc models

Gmc C2500Gmc V2500Gmc JimmyGmc V3500Gmc K15Gmc C6000