GM 42923170 Bumper Inserts Covers

( Brand: Gm ), ( Manufacturer Part Number: 42923170 ), ( Part Type: Cover Bumper ), ( Genuine Oem: Yes ), ( Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Parts Included: Only Part Reference 0 On The Diagram Is Included ), ( Replaces Part Number: 42723549 )

Review GM Genuine Support

The **GM 42923170** is a high-performance, precision-engineered **OEM-grade alternator** designed for original equipment applications in a wide range of General Motors (GM) vehicles, including select models from the Chevrolet, GMC, Buick, and Cadillac lines. This alternator is built to meet or exceed factory specifications, ensuring seamless integration with the vehicle s electrical system while delivering reliable power generation under demanding conditions. Featuring a robust **140-ampere output capacity**, it is engineered to efficiently recharge the battery and supply consistent voltage to critical components such as the starter, lights, infotainment systems, and advanced driver-assistance features, even during high-demand scenarios like extended highway driving or frequent use of accessories like heated seats or climate control.

The alternator incorporates a **brushless design**, eliminating wear from traditional carbon brushes and reducing the risk of electrical arcing or failure over time. Its **silicon-controlled rectifier (SCR) diode assembly** ensures smooth current regulation, minimizing voltage spikes that could damage sensitive electronics. The housing is constructed from **high-strength die-cast aluminum**, providing excellent heat dissipation and corrosion resistance, while the internal rotor and stator are precision-machined from durable materials to withstand prolonged use without compromising performance. A **built-in voltage regulator** maintains a stable output of **13.8 to 14.4 volts**, preventing overcharging that could shorten battery life or damage electrical components.

For enhanced durability, the GM 42923170 is equipped with **sealed ball bearings** on both the rotor and stator shafts, reducing friction and extending the alternator s operational lifespan. The **serpentine belt pulley** is designed for compatibility with modern automotive belt systems, ensuring smooth engagement with the crankshaft pulley and other accessory drives. This alternator is also engineered to operate efficiently across a broad temperature range, from extreme cold to high heat, making it ideal for vehicles used in diverse climates. Whether installed in a high-mileage sedan, a rugged SUV, or a performance-oriented truck, the GM 42923170 delivers consistent power generation, contributing to the overall reliability and longevity of the vehicle s electrical system. Its OEM-grade quality ensures compatibility with factory wiring harnesses and mounting brackets, making it a direct replacement for failed or worn alternators without the need for additional modifications.

### **Pros and Cons of Buying GM Part Number 42923170**

GM part number **42923170** is a **rear axle drive shaft (half-shaft)** commonly used in older General Motors vehicles, particularly in models like the **Chevrolet Suburban, GMC Yukon, and Cadillac Escalade** from the late 1990s to early 2000s. This part is critical for transferring power from the transmission to the rear wheels.

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### **Pros of Purchasing GM 42923170**

1. **Direct Fitment for GM Vehicles**

- This part is designed specifically for GM s **4L60-E, 4L65-E, and 4L80-E transmissions**, ensuring compatibility with vehicles like the **1999 2006 Suburban 1500/2500HD, 2000 2006 Yukon XL, and 2000 2006 Escalade**.

- No modifications are typically required for installation.

2. **High-Quality Construction**

- GM parts are generally built to meet strict manufacturing standards, ensuring durability and reliability.

- The drive shaft is designed to handle the torque demands of heavy-duty trucks and SUVs.

3. **Widely Available Aftermarket Alternatives**

- If the original part is difficult to find, aftermarket manufacturers (such as **Mopar, ACDelco, or local specialty shops**) often carry compatible replacements.

- Some aftermarket versions may offer improvements like **heavier-duty CV joints or balanced shafts** for better longevity.

4. **Standardized Maintenance**

- Since this is a GM OEM part, mechanics familiar with GM vehicles will be well-versed in installation, troubleshooting, and maintenance procedures.

- Common wear points (e.g., **CV joints, boots, and U-joints**) are well-documented, making repairs easier.

5. **Potential for Remanufactured Parts**

- If the part is seized or damaged, remanufactured versions (from companies like **Eagle, Jegs, or local rebuilders**) can restore functionality at a lower cost than a new OEM part.

---

### **Cons of Purchasing GM 42923170**

1. **Age-Related Wear and Availability Issues**

- GM discontinued production of this part years ago, making it **harder to find in stock** at dealerships.

- Prices may be **higher due to scarcity**, especially for older model years.

2. **Potential for Counterfeit or Low-Quality Replacements**

- Since this is an older part, **counterfeit or knockoff versions** may enter the market, leading to premature failure.

- Always verify the **part number, manufacturer, and seller reputation** before purchasing.

3. **High Replacement Cost**

- Labor costs for replacing a drive shaft can be **significant** (typically **$200 $500 ** depending on the vehicle and shop rates).

- If both shafts need replacement (common in high-mileage vehicles), costs add up quickly.

4. **Common Failure Points**

- **CV joints** (Constant Velocity joints) and **U-joints** are frequent failure points, especially in vehicles with **high mileage or rough driving conditions**.

- **Boot leaks** (from dirt, grease, or debris) can lead to joint failure if not addressed promptly.

5. **Compatibility Risks with Modified Vehicles**

- If the vehicle has been **modified with aftermarket transmissions, lifts, or suspension changes**, the stock drive shaft may not align properly.

- A **custom-length or heavy-duty shaft** may be required, increasing costs.

6. **Environmental and Driving Conditions**

- **Off-road use, extreme temperatures, or salt exposure** (common in winter driving) can accelerate wear on the drive shaft.

- Vehicles used for **towing or heavy loads** may experience premature failure if the shaft is not up to the task.

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### **Ending Conclusion**

GM part number **42923170** is a **critical and widely used component** for older GM full-size trucks and SUVs. While it offers **direct fitment, reliability, and ease of maintenance**, its **aging availability, potential for counterfeit parts, and high replacement costs** are significant drawbacks. The decision to purchase this part depends on **budget, vehicle condition, and long-term needs**.

If the vehicle is **high-mileage or used for heavy-duty tasks**, investing in a **remanufactured or aftermarket heavy-duty shaft** (with reinforced CV joints) may be a better long-term solution. For **lower-mileage vehicles in normal use**, the OEM or a trusted aftermarket part should suffice.

---

### **Final Recommendation**

1. **Verify Vehicle Compatibility**

- Double-check that **42923170** is the correct part for your specific **year, model, and transmission type** (4L60-E, 4L65-E, etc.).

2. **Purchase from a Reputable Source**

- Buy from **authorized GM dealers, trusted aftermarket suppliers (Mopar, ACDelco), or well-reviewed online retailers**.

- Avoid **unknown sellers** to prevent counterfeit parts.

3. **Consider Remanufactured or Heavy-Duty Alternatives**

- If the part is expensive or hard to find, a **remanufactured version** (from a reputable shop) can save money while maintaining quality.

- For **high-mileage or performance applications**, a **heavy-duty aftermarket shaft** (e.g., **Eagle, Dura-Bilt, or local specialty brands**) may offer better durability.

4. **Budget for Labor and Additional Components**

- Replacing a drive shaft often requires **removing the wheel well, transmission mount, or subframe**, which can be labor-intensive.

- **Inspect CV joints, boots, and U-joints** during installation replace any worn components to prevent future failures.

5. **Maintain Properly**

- **Lubricate CV joints** as recommended (every **30,000 50,000 miles**).

- **Check for leaks** in the boot seals and replace them if damaged.

- **Avoid aggressive off-road driving** if the vehicle is not equipped for it.

- **For most owners of older GM trucks/SUVs in normal use:** A **new or remanufactured GM OEM part** (42923170) from a trusted dealer is the safest option.

- **For high-mileage or performance applications:** A **heavy-duty aftermarket shaft** with reinforced joints is worth the investment.

- **For budget-conscious buyers:** A **reputable aftermarket alternative** (e.g., Mopar, ACDelco) can be a cost-effective substitute.

By weighing these factors, you can make an informed decision that balances **cost, reliability, and long-term vehicle health**.

Details:

Preferred, bumper support. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Sport touring, avenue, bumper support. Electrical parts are not returnable.

Genuine GM Support 42923170:: Without sport touring package, bumper support. Parts must be resalable and in the original packaging.

part #: 42923170 prices

• $29.13-$31.29

specifications vintagecarbumperus:

• brand: Gm
• mpn: 42923170
• part type: Cover Bumper
• genuine oem: Yes
• warranty: 1 Year
• fitment type: Direct Replacement
• parts included: Only Part Reference 0 On The Diagram Is Included
• replaces part number: 42723549

offer vintagecarbumperus:

• sold: 0
• availability: In Stock
• options: Ship-to-home
• quantity: 1
• started: March 17, 2026

returns vintagecarbumperus:

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

general vintagecarbumperus:

• condition: New
• Exterior Parts Accessories > Bumpers Components > Bumper Inserts Covers

payments vintagecarbumperus:

• credit card: Visa
• other
• wallet: Google-pay

shipping vintagecarbumperus:

• service: Standard
• class: Standard
• type: Fixed
• cost: $21.05
• transit: 3-9 Days

seller vintagecarbumperus:

• rating: 100.0%
• # reviews: 44
• city: Rochester, New York

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