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Monroe 58644 Shock Absorber and Coil Spring Assembly - Rear
Monroe Load Adjusting Shock Absorber Overview
The Monroe Load Adjusting Shock Absorber part number 58644 is designed specifically for Chevrolet and GMC SUVs, including the Envoy, Envoy XL, Envoy XUV, Trailblazer, and Trailblazer EXT. This suspension shock absorber and coil spring assembly provides reliable damping performance tailored to these vehicle models.
- Compressed length: 14.73 inches
- Extended length: 23.82 inches
- Travel length: 9.09 inches
- Metal dust shield included for enhanced protection
- Loop bushing and sleeve mounts on both upper and lower ends
- Lower mounting type: 1/2" sleeve ID x 2.25" sleeve OAL
- Upper mounting type: 1/2" sleeve ID x 1.11/16" sleeve OAL
Load Adjusting Shock Absorber Product Line Details
The Monroe Load Adjusting Shock Absorber line is engineered to provide consistent ride quality and vehicle control by automatically adjusting to varying load conditions. This feature helps maintain proper suspension performance and vehicle stability, especially when carrying heavier loads or towing. The 58644 shock absorber integrates these load-adaptive characteristics to suit the specific suspension requirements of Chevrolet Envoy and GMC Trailblazer models.
Technical Description and Features
This suspension shock absorber and coil spring assembly features a compressed length of 14.73 inches and an extended length of 23.82 inches, allowing for a travel length of 9.09 inches. The inclusion of a metal dust shield protects internal components from dirt and debris, extending the service life of the shock absorber. Both upper and lower mounts utilize loop bushing and sleeve designs, with precise sleeve inner diameters and overall lengths to ensure proper fitment and secure installation on compatible Chevrolet and GMC SUVs.
Common Applications and Problem Solving
- Restores proper suspension travel and damping on Chevrolet Envoy and GMC Trailblazer models
- Addresses excessive body roll and instability under load
- Reduces harshness and vibration caused by worn shocks
- Improves vehicle handling when carrying heavy cargo or towing
- Prevents premature suspension wear due to inadequate shock performance
Installation Notes and Tips
- Verify compatibility with Chevrolet Envoy, Envoy XL, Envoy XUV, Trailblazer, and Trailblazer EXT before installation
- Ensure mounting bushings and sleeves are properly aligned to avoid premature wear
- Use appropriate tools to compress and secure the shock absorber during installation
- Inspect related suspension components for wear or damage during replacement
Quality Assurance and Warranty
Monroe shock absorbers are manufactured to meet or exceed OEM specifications for durability and performance. The Load Adjusting Shock Absorber 58644 undergoes rigorous quality control to ensure consistent operation under varying load conditions. Warranty coverage details should be confirmed with the original product documentation or authorized Monroe distributors.
| Brand | Monroe |
|---|---|
| Part Number | 58644 |
| Position | Load Adjusting Shock Absorber, Rear |
| Compressed Bumper Stop | No |
| Compressed Length | 14.73 |
| Dust Shield | Yes |
| Dust Shield Material | Metal |
| Extended Bumper Stop | No |
| Extended Hydraulic Lockout | No |
| Extended Length | 23.82 |
| Lower Mounting Code | LS41 |
| Lower Mounting Type | Loop Bushing & Sleeve Mount - 1/2" Sleeve ID X 2.1/4" Sleeve OAL |
| Parts Pack | None |
| Travel Length | 9.09 |
| Upper Mounting Code | LS40 |
| Upper Mounting Type | Loop Bushing & Sleeve Mount - 1/2" Sleeve ID X 1.11/16" Sleeve OAL |
This part fits 28 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2009 | Chevrolet | Trailblazer | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2009 | GMC | Envoy | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2008 | Chevrolet | Trailblazer | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2008 | GMC | Envoy | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2007 | Chevrolet | Trailblazer | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2007 | GMC | Envoy | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2006 | Chevrolet | Trailblazer | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2006 | Chevrolet | Trailblazer EXT | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2006 | GMC | Envoy | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2006 | GMC | Envoy XL | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2005 | Chevrolet | Trailblazer | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2005 | Chevrolet | Trailblazer EXT | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2005 | GMC | Envoy | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2005 | GMC | Envoy XL | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2005 | GMC | Envoy XUV | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2004 | Chevrolet | Trailblazer | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2004 | Chevrolet | Trailblazer EXT | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2004 | GMC | Envoy | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2004 | GMC | Envoy XL | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2004 | GMC | Envoy XUV | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2003 | Chevrolet | Trailblazer | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2003 | Chevrolet | Trailblazer EXT | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2003 | GMC | Envoy | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2003 | GMC | Envoy XL | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2002 | Chevrolet | Trailblazer | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2002 | Chevrolet | Trailblazer EXT | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2002 | GMC | Envoy | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
| 2002 | GMC | Envoy XL | Rear | Compatible with vehicles intended for towing and hauling applications.; Load Adjusting Shock Absorber |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.