GMC 40021299 Rear Drive Shaft Wb 5.3L 143.5

( Manufacturer Part Number: 40021299 ), ( Type: Driveshaft ), ( Year: 14 15 16 17 18 2014 2015 2016 2017 2018 ), ( Country Of Origin: United States ), ( Transmission Type: Automatic )

Review GMC Rear Aluminum Drive Shaft 5.3l Wb Oem fits SIERRA 1500 RWD 2014–2018

The **GMC 40021299 Rear Drive Shaft for the 2014-2018 Sierra 1500 with a 5.3L V8 engine, Rear-Wheel Drive (RWD) configuration, and a 143.5-inch wheelbase** is a precision-engineered component designed to deliver optimal power transfer and durability for heavy-duty truck applications. This high-performance drive shaft is specifically tailored to match the unique specifications of the GM LS-series 5.3L V8 engine, ensuring seamless integration with the transmission and axle assembly while maintaining the integrity of the vehicle s drivetrain. Constructed from high-grade, heat-treated steel, the shaft features a robust, balanced design that minimizes vibration and wear, even under demanding conditions such as towing, hauling, or off-road driving. The drive shaft is equipped with a **Yoke-to-Yoke** configuration, featuring a **spicer joint (constant velocity) at the axle end** and a **slip yoke at the transmission end**, allowing for smooth articulation and flexibility as the suspension moves. This design ensures that the drive shaft can accommodate the natural movement of the rear axle while maintaining a consistent power delivery to the wheels. The **143.5-inch wheelbase compatibility** guarantees a precise fit for the Sierra 1500 s specific geometry, preventing binding or misalignment that could lead to premature failure. Whether used for daily driving, work applications, or recreational towing, this drive shaft is built to withstand the rigors of heavy use, providing long-lasting performance and reliability. For optimal results, it is recommended to pair this component with high-quality lubricants and to follow manufacturer-recommended maintenance intervals to extend its service life.

### **Pros and Cons of Buying a 2014 2018 GMC Sierra 1500 (RWD, 5.3L, 143.5" WB) with the Specified Rear Drive Shaft (Part # 40021299)**

1. **Proven Reliability of the 5.3L V8 Engine** The LS3-based 5.3L V8 (in RWD models) is known for durability, especially when maintained properly. It s a robust engine that can handle heavy loads and towing if serviced regularly.

2. **Strong Resale Value** The GMC Sierra 1500, particularly in RWD form, holds its value better than many full-size trucks due to its reputation for comfort and capability.

3. **Comfortable Ride & Interior Quality** The 143.5" wheelbase provides a more refined, less jarring ride compared to shorter-wheelbase trucks. The interior is well-built, with decent materials in higher trims.

4. **Towing & Hauling Capability** With the 5.3L engine, this truck can tow up to **8,500 9,000 lbs** (with proper equipment), making it suitable for heavy-duty tasks like trailers or equipment.

5. **Availability of Parts & Aftermarket Support** As a GM LS-series V8 vehicle, parts are widely available, and aftermarket modifications (performance upgrades, suspension work) are common.

6. **Lower Maintenance Costs Than Diesel or Turbo V6** Compared to a Duramax diesel or a turbocharged V6, the naturally aspirated 5.3L has fewer high-cost maintenance items (no turbo, EGR, or DPF concerns).

7. **Good Fuel Economy for a V8 (Compared to Alternatives)** While not great (around **14 16 MPG combined**), it s better than many diesel trucks and avoids the high fuel costs of a turbocharged V6.

8. **Potential for Modifications** The RWD platform allows for easier suspension tuning, exhaust upgrades, and engine swaps (e.g., LS3, LT4, or even crate engines).

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1. **Aging Transmission (6L80) Reliability Concerns** The 6-speed automatic transmission in these years has had some issues with rough shifting, premature wear, and failure in high-mileage examples. A pre-purchase inspection (PPI) is critical.

- **U-joint wear** (common in high-mileage examples).

- **Improper installation** (if not torqued correctly, it can cause premature failure).

- **Corrosion** (if driven in salted or wet conditions).

- **Lack of lubrication** (some owners neglect greasing the joints).

- **Recalls & TSBs** GM issued a recall (TSB 18-1003) for **2014 2018 RWD Sierra 1500s** due to **rear drive shaft failure risk**, especially if the **rear axle is not properly aligned** or if the **drive shaft is not installed correctly**. If this part has been replaced, verify the work was done properly.

3. **Higher Maintenance Costs Over Time** While the engine is durable, **transmission fluid changes, suspension components, and drive shaft replacements** can add up, especially if neglected.

4. **No Standard Trailer Tow Package (If Missing)** If the truck lacks a **trailer tow package**, towing beyond **3,500 lbs** may require aftermarket upgrades (heavy-duty radiator, transmission cooler, etc.), increasing costs.

5. **RWD Handling Limitations** Without a **4WD system**, the truck is less capable off-road or in slippery conditions compared to AWD or 4WD models.

6. **Fuel Economy & Running Costs** The 5.3L V8 is thirsty, and **gasoline prices** can make ownership expensive over time. If you do a lot of highway driving, consider this carefully.

7. **Potential for Hidden Rust Issues** Older trucks (especially in snowy or coastal regions) may have **frame rust, wheel wells, or undercarriage corrosion**, which can lead to costly repairs.

8. **Dealer vs. Private Sale Risks** If buying used, **private sellers may not disclose maintenance history**, while dealers may charge premiums for "certified" examples that aren t necessarily better.

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- **Check the Drive Shaft History** If the **rear drive shaft (40021299) has been replaced**, ask for proof of installation (torque specs, alignment checks). If it s original, **inspect for wear, grease leaks, or clunks** when driving.

- **Transmission Condition** Listen for **rough shifting, delayed engagement, or grinding** these are signs of a failing 6L80.

- **Suspension & Bushings** **Control arm bushings, sway bar links, and ball joints** often wear out by **100K 150K miles**. Check for **clunks over bumps**.

- **Rust Inspection** Look under the truck, around the frame rails, and wheel wells for **corrosion**.

- **Service Records** A well-maintained example with **oil changes every 5K 7.5K miles** and **transmission fluid changes at 60K 100K miles** will last longer.

- **Test Drive Focus Areas**

- **Drive shaft clunks** (especially at highway speeds).

- **Transmission smoothness** (no hesitation or jerking).

- **Suspension firmness** (no excessive bounce or bottoming out).

- **Engine noise** (knocking, ticking, or oil leaks).

---

You **prioritize reliability over fuel efficiency** and can afford **potential transmission or drive shaft repairs**.

The **rear drive shaft (40021299) has been properly replaced** (verified installation) or is in **excellent condition**.

The **transmission shifts smoothly** and has a **maintenance history**.

You **don t mind a V8 s thirst** and mostly use it for **towing, hauling, or daily driving** rather than highway cruising.

You **get a pre-purchase inspection (PPI)** from a **trusted mechanic** before buying.

The **drive shaft shows signs of wear** (clunks, leaks, improper installation).

The **transmission is rough or has no service records**.

You **can t afford unexpected repairs** (transmission, suspension, or drive shaft).

You **need better fuel economy** consider a **turbo V6 or diesel** instead.

The **seller won t provide maintenance history** or won t let you inspect it properly.

---

- **If buying new-to-you**, **negotiate a lower price** (10 20%) to account for potential risks (drive shaft, transmission).

- **If buying from a dealer**, look for **certified pre-owned (CPO) examples** with **extended warranties**.

- **If buying private**, **insist on a PPI** and **avoid high-mileage examples without records**.

- **Consider alternatives** if you need **better fuel economy or lower maintenance costs** (e.g., **2019 Sierra with the 6.2L V8 or turbo V6**).

**Bottom Line:** This truck can be a **great buy** if the **drive shaft and transmission are in good shape**, but it requires **due diligence** to avoid costly surprises. If you re comfortable with **V8 ownership and can budget for maintenance**, it s a solid choice for **towing, hauling, and daily use**. If not, **look for a newer model or a different powertrain**.

Details:

The shaft is straight and free of major dents. Condition: Good used condition. This is a lightweight aluminum driveshaft designed for the 5.3L V8 engine and 6-speed automatic transmission configuration. Year/Make/ model /Trim: 2018 GMC SIERRA 1500 SLT.

Model: Year Range: Note: GMC Sierra 1500 2014 - 2018 5.3L RWD, Chevrolet Silverado RWD. Auto Element Hub Genuine OEM Rear Aluminum Drive Shaft removed from a 2018 GMC Sierra 1500 SLT RWD. Some surface oxidation present on steel components. ITEM condition: Good / Normal Use As shown in the photos.

Includes yoke and universal joints as shown. U-joints move freely, though replacement is always recommended as a maintenance item before installation.

part #: 40021299 prices

• $135.00-$375.98

specifications universajoin:

• for models: 1500, Rwd, Sierra
• for makes: Gmc
• for years: 2014-2018
• mpn: 40021299
• type: Driveshaft
• year: 14 15 16 17 18 2014 2015 2016 2017 2018
• country of origin: United States
• transmission type: Automatic

shipping universajoin:

• type: Fixed
• carrier: USPS
• class: Standard
• cost: $80.00
• service: USPS Ground Advantage
• transit: 6-12 Days

payments universajoin:

• wallet: Google-pay
• other
• credit card: Diners-club

seller universajoin:

• # reviews: 2944
• city: Jacksonville, Florida
• rating: 99.8%

returns universajoin:

• paid by: Buyer
• policy: Returns Accepted
• time: 30 Days

general universajoin:

• condition: Used
• Transmission Drivetrain > Driveshafts Parts > Driveshafts

offer universajoin:

• availability: In Stock
• started: April 11, 2026
• sold: 0
• quantity: 1
• options: Ship-to-home

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