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Yukon Gear 1541H Alloy Rear Axle for GM 8.6 Inch 1999 to 2004 with Disc Brake
The YA G12471369 is a 1541H microalloy steel rear axle shaft built for the GM 8.6 inch 10-bolt rear differential as found in 1999 through 2004 GM 1500-series trucks, SUVs, and Avalanche models equipped with rear disc brakes. This is the generation of the GM 8.6 inch differential introduced with the redesigned full-size GM platform in 1999, and YA G12471369 provides an OE-compatible replacement that improves on the strength of the factory shaft. The 1541H microalloy construction provides better tensile strength and fatigue life than standard 1040 replacements, making it a recommended upgrade for trucks that have seen regular towing, heavy hauling, or modified performance use.
Features and Benefits
- Fits 1999-2004 GM 8.6 inch 10-bolt rear differential with rear disc brakes
- 1541H microalloy steel for improved strength and durability over 1040 replacements
- Correct ABS ring (if applicable) and bearing journal dimensions for OE fitment
- Direct drop-in replacement requiring no modifications
- Covers Silverado 1500, Sierra 1500, Tahoe, Yukon, Suburban 1500, and Avalanche 1500
- C-clip retention design matching the GM 8.6 inch OE specification
- Sold individually for targeted single-shaft replacement
- Backed by Yukon Gear manufacturer limited warranty
Vehicle Fitment
| Year | Make | Model | Trim |
|---|---|---|---|
| 1999 | Chevrolet | Silverado 1500 | LS |
| 2000 | Chevrolet | Silverado 1500 | LS |
| 2001 | Chevrolet | Silverado 1500 | LS |
| 2002 | Chevrolet | Silverado 1500 | LS |
| 2003 | Chevrolet | Silverado 1500 | LS |
| 2004 | Chevrolet | Silverado 1500 | LS |
| 1999 | Chevrolet | Silverado 1500 | LT |
| 2000 | Chevrolet | Silverado 1500 | LT |
| 2001 | Chevrolet | Silverado 1500 | LT |
| 2002 | Chevrolet | Silverado 1500 | LT |
| 2003 | Chevrolet | Silverado 1500 | LT |
| 2004 | Chevrolet | Silverado 1500 | LT |
| 1999 | Chevrolet | Silverado 1500 | WT |
| 2002 | Chevrolet | Silverado 1500 | WT |
| 2003 | Chevrolet | Silverado 1500 | WT |
| 2004 | Chevrolet | Silverado 1500 | WT |
| 1999 | Chevrolet | Tahoe | LS |
| 2000 | Chevrolet | Tahoe | LS |
| 2001 | Chevrolet | Tahoe | LS |
| 1999 | Chevrolet | Suburban 1500 | LS |
| 2000 | Chevrolet | Suburban 1500 | LS |
| 2001 | Chevrolet | Suburban 1500 | LS |
| 2002 | Chevrolet | Avalanche 1500 | Z71 |
| 2003 | Chevrolet | Avalanche 1500 | Z71 |
| 2004 | Chevrolet | Avalanche 1500 | Z71 |
| 1999 | GMC | Sierra 1500 | SLE |
| 2000 | GMC | Sierra 1500 | SLE |
| 2001 | GMC | Sierra 1500 | SLE |
| 2002 | GMC | Sierra 1500 | SLE |
| 2003 | GMC | Sierra 1500 | SLE |
| 2004 | GMC | Sierra 1500 | SLE |
| 1999 | GMC | Yukon | Denali |
| 2000 | GMC | Yukon | Denali |
| 2001 | GMC | Yukon | Denali |
| 2000 | GMC | Yukon XL 1500 | SLE |
| 2001 | GMC | Yukon XL 1500 | SLE |
Specifications
| Specification | Detail |
|---|---|
| Part Number | YA G12471369 |
| UPC | 883584161530 |
| Axle Housing | GM 8.6 inch 10-bolt (1999-2004 with disc brakes) |
| Material | 1541H microalloy steel |
| Retention | C-clip |
| Warranty | Yukon Gear manufacturer limited warranty |
What Is Included
- One 1541H alloy rear axle shaft (YA G12471369)
- Sold individually
Frequently Asked Questions
Does installing this axle shaft affect my factory warranty?
Under the Magnuson-Moss Warranty Act, the manufacturer must prove the aftermarket part caused the specific failure before denying your warranty claim. Installing a higher-quality replacement shaft does not automatically void your coverage.
How do I know if my 1999-2004 GM truck has rear disc or drum brakes?
Look behind the rear wheel. Disc brakes have a rotor and caliper visible. Drum brakes have a round drum housing. YA G12471369 is for disc brake applications only.
Does this shaft include an ABS ring?
Verify the ABS ring requirement for your specific application before ordering. Some 1999-2004 GM 8.6 inch applications have the ABS sensor at the differential rather than on the shaft itself.
What is the spline count on the 1999-2004 GM 8.6 inch axle shaft?
The GM 8.6 inch 10-bolt rear axle uses 28 or 30 spline shafts depending on the specific application and model year. Confirm your spline count matches YA G12471369 specifications before ordering.
Can I use YA G12471369 with a G80 Gov-Lok limited-slip?
Yes. The 1541H shaft is compatible with the factory G80 Gov-Lok and other limited-slip differentials used in the GM 8.6 inch housing.
Is it necessary to drain and refill the differential when replacing an axle shaft?
Yes. To access the C-clip for shaft removal, the differential cover must be removed, which drains the gear oil. Always refill with the correct fluid after completing the installation.
What gear oil is correct for the GM 8.6 inch with a G80 Gov-Lok?
Use 75W-90 synthetic GM-spec axle lubricant plus GM limited-slip axle lubricant additive (part number 12345349 or equivalent) to prevent chatter in the G80 Gov-Lok.
Can I install this shaft without a press?
Yes. A C-clip axle shaft does not require a press for installation. Basic hand tools are sufficient.
What warranty does YA G12471369 carry?
Yukon Gear provides a manufacturer limited warranty against defects in materials and workmanship from the date of purchase.
Installation Instructions
- Raise and support the vehicle. Remove the wheel and tire on the affected side.
- Remove the brake caliper, bracket, and rotor for full access.
- Remove the differential cover and drain the gear oil completely.
- Remove the pinion shaft lock bolt and slide out the pinion shaft.
- Push the old axle shaft inward to expose the C-clip. Remove the C-clip and slide out the shaft.
- Inspect the axle bearing and seal. Replace if needed.
- Apply gear oil to the spline end of YA G12471369. Slide the shaft in and engage the splines.
- Install the C-clip and pull the shaft outward to seat the clip against the side gear bore.
- Reinstall the pinion shaft and torque the lock bolt to GM specification.
- Install the differential cover with new RTV sealant. Fill with correct gear oil.
- Reinstall the rotor, caliper, wheel, and tire. Road-test and inspect for leaks.
Proposition 65 Warning: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.
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