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ACDelco 11588273 - Suspension Shock Absorber Mounting Bolt
Product Overview
The ACDelco 11588273 Suspension Shock Absorber Mounting Bolt is an essential component designed to secure the shock absorber to your vehicle's suspension system. Built to OE specifications, this mounting bolt ensures a perfect fit and reliable performance under various driving conditions. Trust in ACDelco's reputation for quality, as this part is compatible with a range of popular vehicle makes, including Buick, Cadillac, Chevrolet, GMC, and Hummer. Choose ACDelco 11588273 for dependable performance and peace of mind every time you service your vehicle.
Cross Reference Numbers
This ACDelco 11588273 is equivalent to or replaces the following part numbers:
Vehicle Compatibility
- Buick Envision 2021-2025
- Cadillac Escalade EXT 2007-2013 6.2 V8
- Cadillac Escalade 2007-2020 6.2 V8
- Cadillac Escalade ESV 2007-2020 6.2 V8
- Cadillac XT4 2019-2025 2.0
- Chevrolet Express 1500 2005-2014 4.3 V6
- Chevrolet Avalanche 2007-2009 6.0 V8
- Chevrolet Silverado 1500 2007-2013 4.8 V8
- Chevrolet Tahoe 2007-2020 5.3 V8
- GMC Sierra 1500 2007-2013 4.8 V8
This also fits other applications. Please use the vehicle selector tool to verify fitment.
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Frequently Asked Questions
What is the function of the ACDelco 11588273 Suspension Shock Absorber Mounting Bolt?
The ACDelco 11588273 is designed to securely attach the shock absorber to the vehicle's suspension, ensuring stability and comfort while driving.
Will the ACDelco 11588273 fit my vehicle?
This mounting bolt is compatible with various models including Buick, Cadillac, Chevrolet, GMC, and Hummer. Please refer to the vehicle compatibility section for specific fitment details.
What are some common issues that the ACDelco 11588273 can help resolve?
Using the correct mounting bolt like the ACDelco 11588273 can help prevent suspension noise and enhance vehicle handling, particularly if the original bolt is worn or damaged.
What should I do if I encounter a DTC related to my suspension?
If you experience any diagnostic trouble codes (DTCs) related to suspension, ensure that components like the ACDelco 11588273 are in good condition and properly installed. Common DTCs for suspension issues include C0040, C0041, and C0042.
Order ACDelco 11588273 today for a factory-correct replacement that restores safety and performance.
- BrandACDelco
- ManufacturerACDelco
- MPN11588273
- Part TypeSuspension Shock Absorber Mounting Bolt
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2011 | Chevrolet | Silverado 3500 HD | LT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2011 | Chevrolet | Silverado 3500 HD | LTZ (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2011 | Chevrolet | Silverado 3500 HD | WT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2011 | Chevrolet | Silverado 2500 HD | LT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2011 | Chevrolet | Silverado 2500 HD | LTZ (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2011 | Chevrolet | Silverado 2500 HD | WT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2011 | Chevrolet | Express 2500 | Base (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2011 | Chevrolet | Express 3500 | Base (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2011 | Chevrolet | Express 3500 | LS (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2011 | Chevrolet | Express 3500 | LT (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2011 | GMC | Sierra 3500 HD | Denali (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2011 | GMC | Sierra 3500 HD | SLE (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2011 | GMC | Sierra 3500 HD | SLT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2011 | GMC | Sierra 3500 HD | WT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2011 | GMC | Sierra 2500 HD | Denali (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2011 | GMC | Sierra 2500 HD | SLE (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2011 | GMC | Sierra 2500 HD | SLT (6.6 V8 DIESEL) | |
| 2012 | Chevrolet | Silverado 3500 HD | LT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2012 | Chevrolet | Silverado 3500 HD | LTZ (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2012 | Chevrolet | Silverado 3500 HD | WT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2012 | Chevrolet | Silverado 2500 HD | LT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2012 | Chevrolet | Silverado 2500 HD | LTZ (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2012 | Chevrolet | Silverado 2500 HD | WT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2012 | Chevrolet | Express 2500 | Base (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2012 | Chevrolet | Express 3500 | Base (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2012 | Chevrolet | Express 3500 | LS (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2012 | Chevrolet | Express 3500 | LT (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2012 | GMC | Sierra 3500 HD | Denali (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2012 | GMC | Sierra 3500 HD | SLE (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2012 | GMC | Sierra 3500 HD | SLT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2012 | GMC | Sierra 3500 HD | WT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2013 | Chevrolet | Silverado 3500 HD | LT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2013 | Chevrolet | Silverado 3500 HD | LTZ (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2013 | Chevrolet | Silverado 3500 HD | WT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2013 | Chevrolet | Silverado 2500 HD | LT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2013 | Chevrolet | Silverado 2500 HD | LTZ (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2013 | Chevrolet | Silverado 2500 HD | WT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2013 | Chevrolet | Express 2500 | Base (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2013 | Chevrolet | Express 3500 | Base (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2013 | Chevrolet | Express 3500 | LS (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2013 | Chevrolet | Express 3500 | LT (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2013 | GMC | Sierra 3500 HD | Denali (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2013 | GMC | Sierra 3500 HD | SLE (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2013 | GMC | Sierra 3500 HD | SLT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2013 | GMC | Sierra 3500 HD | WT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2014 | Chevrolet | Silverado 3500 HD | LT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2014 | Chevrolet | Silverado 3500 HD | LTZ (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2014 | Chevrolet | Silverado 3500 HD | WT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2014 | Chevrolet | Silverado 2500 HD | LT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2014 | Chevrolet | Silverado 2500 HD | LTZ (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2014 | Chevrolet | Silverado 2500 HD | WT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2014 | Chevrolet | Express 2500 | Base (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2014 | Chevrolet | Express 3500 | Base (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2014 | Chevrolet | Express 3500 | LS (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2014 | Chevrolet | Express 3500 | LT (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2014 | GMC | Sierra 3500 HD | Denali (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2014 | GMC | Sierra 3500 HD | SLE (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2014 | GMC | Sierra 3500 HD | SLT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2014 | GMC | Sierra 3500 HD | WT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2015 | Chevrolet | Silverado 3500 HD | High Country (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2015 | Chevrolet | Silverado 3500 HD | LT (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2015 | Chevrolet | Silverado 3500 HD | LTZ (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2015 | Chevrolet | Silverado 3500 HD | WT (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2015 | Chevrolet | Silverado 2500 HD | High Country (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2015 | Chevrolet | Silverado 2500 HD | LT (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2015 | Chevrolet | Silverado 2500 HD | LTZ (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2015 | Chevrolet | Silverado 2500 HD | WT (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2015 | Chevrolet | Express 2500 | Base (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2015 | Chevrolet | Express 3500 | Base (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2015 | Chevrolet | Express 3500 | LS (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2015 | Chevrolet | Express 3500 | LT (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2015 | GMC | Sierra 3500 HD | Base (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2015 | GMC | Sierra 3500 HD | Denali (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2015 | GMC | Sierra 3500 HD | SLE (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2015 | GMC | Sierra 3500 HD | SLT (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2016 | Chevrolet | Silverado 3500 HD | High Country (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2016 | Chevrolet | Silverado 3500 HD | LT (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2016 | Chevrolet | Silverado 3500 HD | LTZ (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2016 | Chevrolet | Silverado 3500 HD | WT (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2016 | Chevrolet | Silverado 2500 HD | High Country (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2016 | Chevrolet | Silverado 2500 HD | LT (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2016 | Chevrolet | Silverado 2500 HD | LTZ (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2016 | Chevrolet | Silverado 2500 HD | WT (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2016 | Chevrolet | Express 2500 | Base (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2016 | Chevrolet | Express 3500 | Base (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2016 | Chevrolet | Express 3500 | LS (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2016 | Chevrolet | Express 3500 | LT (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2016 | GMC | Sierra 3500 HD | Base (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2016 | GMC | Sierra 3500 HD | Denali (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2016 | GMC | Sierra 3500 HD | SLE (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2016 | GMC | Sierra 3500 HD | SLT (6.6 V8 DIESEL) | Engine: LML, VIN: 8, Notes: SINGLE USE, 10MMX1.5X40MM |
| 2010 | Chevrolet | Express 2500 | Base (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2010 | Chevrolet | Express 3500 | Base (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
| 2010 | GMC | Sierra 2500 HD | SLE (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2010 | GMC | Sierra 2500 HD | SLT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2010 | GMC | Sierra 2500 HD | WT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2010 | GMC | Sierra 3500 HD | SLE (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2010 | GMC | Sierra 3500 HD | SLT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2010 | GMC | Sierra 3500 HD | WT (6.6 V8 DIESEL) | Notes: TO FRAME BRKT, 10MMX1.5X40MM |
| 2010 | GMC | Savana 2500 | Base (6.6 V8 DIESEL) | Notes: TO FRAME, 10MMX1.5X40MM |
Warranty Overview
At Newparts, we stand behind the quality of the products we sell. Every part we offer is backed by a warranty designed to give you peace of mind and protect your investment.
Standard Warranty – Most Parts
Coverage: 2 years or 24,000 miles (whichever comes first) from purchase date.
Protection: Defects in materials or workmanship under normal personal use.
Eligibility: Applies only to the original purchaser and the vehicle where the part was first installed.
Exclusions:
Wear-and-tear items (brake pads, filters, bulbs, wipers, etc.)
Commercial, fleet, rideshare, off-road, or racing use
Improper installation, misuse, accidents, or modifications
Not Covered: Labor, shipping, towing, or incidental costs.
Bison Performance Warranty – Our House Brand
Coverage: Limited Lifetime Warranty for as long as you own your vehicle.
Applies To: All products sold under the Bison Performance label.
Premium Protection: Goes beyond our standard warranty — if it’s a Bison product, the 2-year/24k mile limit is replaced with lifetime coverage.
Exclusions: Same as the standard warranty (normal wear, commercial use, improper installation, etc.).
What’s Included: Replacement of the defective product (labor and shipping excluded).
Warranty Claim Requirements
To keep claims fast and fair, we require:
Proof of purchase (invoice or order confirmation).
Photos or videos showing the defective part, order number, date, VIN, and odometer reading.
Diagnostic reports or part returns for non-visible issues may be requested.
Claims must be truthful, properly documented, and reflect normal consumer use.
Buy With Confidence: We back our products because we believe in their quality, with a transparent, customer-first warranty process you can trust. And with Bison Performance products, you’ll enjoy Limited Lifetime protection—an assurance few brands can match.
For full details and exclusions, please see our complete Warranty Terms & Conditions.
This summary is for convenience only. For full warranty coverage details, exclusions, and requirements, see our official Warranty Terms & Conditions. In case of conflict, the full policy governs.
Return Policy Overview
Most parts can be returned within 30 days of delivery if unused, uninstalled, and in original packaging.
To start a return, use our Return Portal or contact support.
Restocking fee: Up to 20% may apply for certain orders (buyer’s remorse, order errors, or special-order items)
Refunds: Issued to your original payment method within 3–5 business days after inspection
Exchanges: Not automatic — please return and reorder
Replacements: May be approved for incorrect or defective items reported within 7 days
Not returnable:
Used or installed parts
Electrical components
Opened filter kits, gaskets, or contaminated items
Final sale or custom orders
Important Notes:
Return shipping is your responsibility unless we made a verified error
Fitment is the customer’s responsibility (we can assist, but do not guarantee)
Country of origin may vary and is not grounds for return
For complete details, please see our full Return Policy.
This Returns summary is provided for convenience only. All returns, refunds, and exchanges are subject to the complete Returns Policy. In the event of any conflict, the full policy governs.
Fast, Reliable Shipping — Straight to Your Door
We ship most orders the same day when placed before 2 PM CST (Monday–Friday). Our main warehouse is just east of Nashville, TN, and we also ship from multiple locations nationwide to get your order to you as quickly as possible.
We use trusted carriers like UPS, FedEx, and USPS.
Tracking info is emailed to you as soon as your order ships.
Delivery estimates at checkout are based on carrier data, but not guaranteed.
Need help with a shipment?
If your order is missing, damaged, or incorrect, just let us know within 5 days of delivery. We’ll walk you through the quick claim process — including a few photos to help us make things right.
For full details, please see our complete Shipping Policy.
This Shipping summary is provided for convenience only. Delivery times, carrier terms, fees, restrictions, risk of loss, and other details are governed by our complete Shipping Policy. In the event of any conflict, the full policy governs.






