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ACDelco 15042048 - Suspension Shock Absorber Mount Insulator
Product Overview
The ACDelco 15042048 Suspension Shock Absorber Mount Insulator is designed to provide excellent support and stability to your vehicle's suspension system. This vital component helps to dampen vibrations and impacts, ensuring a smoother ride and improved handling. Built to meet OE-level quality and reliability, the ACDelco 15042048 guarantees a precise fit and exceptional performance for a wide range of Cadillac and Chevrolet models. Trust in ACDelco, a brand synonymous with automotive excellence, to keep your vehicle performing at its best. Choose ACDelco 15042048 for dependable performance and peace of mind every time you service your vehicle.
Cross Reference Numbers
This ACDelco 15042048 is equivalent to or replaces the following part numbers:
Vehicle Compatibility
- 2002-2005 Cadillac Escalade 5.3 V8
- 2002-2006 Cadillac Escalade 6.0 V8
- 2002-2006 Cadillac Escalade EXT 6.0 V8
- 2003-2006 Cadillac Escalade ESV 6.0 V8
- 1999-2000 Chevrolet Silverado 2500 5.3 V8
- 1999-2004 Chevrolet Silverado 2500 6.0 V8
- 1999-2006 Chevrolet Silverado 1500 4.3 V6
- 1999-2006 Chevrolet Silverado 1500 4.8 V8
- 1999-2006 Chevrolet Silverado 1500 5.3 V8
- 2000-2006 Chevrolet Suburban 1500 5.3 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 purpose of the ACDelco 15042048 Suspension Shock Absorber Mount Insulator?
The ACDelco 15042048 serves to provide stability and support for the shock absorbers in your vehicle's suspension system, enhancing overall ride quality.
How do I know if the ACDelco 15042048 is compatible with my vehicle?
Compatibility can be confirmed using the vehicle selector tool on our website. The ACDelco 15042048 fits various models, primarily from Cadillac and Chevrolet.
What are the signs that I need to replace my shock absorber mount insulator?
Common signs include excessive vibrations, noise during bumps, or a noticeable decrease in ride comfort, indicating that the ACDelco 15042048 may need replacement.
Are there any diagnostic trouble codes (DTCs) related to suspension components?
While the ACDelco 15042048 itself may not trigger DTCs, issues with suspension components can lead to codes such as C0500, C0501, or C0502 indicating suspension faults.
Where can I purchase the ACDelco 15042048?
You can order the ACDelco 15042048 directly from our website for a factory-correct replacement that restores safety and performance. Order ACDelco 15042048 today!
- BrandACDelco
- ManufacturerACDelco
- MPN15042048
- Part TypeSuspension Shock Absorber Mount Insulator
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2001 | GMC | Sierra 1500 | SLE (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Sierra 1500 | SLT (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Sierra 1500 | SL (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Sierra 1500 | SL (4.8 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Sierra 1500 | SL (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Sierra 1500 | SLT (4.8 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Sierra 1500 | SLT (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Sierra 1500 | SLE (4.8 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Sierra 1500 | SLE (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Yukon XL 1500 | Denali (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Yukon XL 1500 | SLT (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Yukon XL 1500 | SLE (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Sierra 3500 | SL (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Sierra 3500 | SLT (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Sierra 3500 | SLE (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Yukon | SLT (4.8 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Yukon | SLT (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Yukon | SLE (4.8 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Yukon | SLE (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | GMC | Yukon | Denali (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | Chevrolet | Silverado 1500 | LT (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | Chevrolet | Silverado 1500 | LS (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | Chevrolet | Silverado 1500 | Base (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | Chevrolet | Silverado 2500 HD | Base (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | Chevrolet | Silverado 2500 HD | LS (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2001 | Chevrolet | Silverado 2500 HD | LT (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2000 | GMC | Sierra 1500 | SLE (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2000 | GMC | Sierra 1500 | SLT (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2000 | GMC | Sierra 1500 | SL (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2000 | GMC | Yukon | SLT (4.8 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2000 | GMC | Yukon | SLT (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2000 | GMC | Yukon | SLE (4.8 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2000 | GMC | Yukon | SLE (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2000 | GMC | Yukon XL 2500 | SLT (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2000 | GMC | Yukon XL 2500 | SLE (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2000 | Chevrolet | Silverado 1500 | LT (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2000 | Chevrolet | Silverado 1500 | LS (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2000 | Chevrolet | Silverado 1500 | Base (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | GMC | Sierra 1500 | SLE (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | GMC | Sierra 1500 | SLT (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | GMC | Sierra 1500 | SL (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | GMC | Sierra 1500 | SL (4.8 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | GMC | Sierra 1500 | SL (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | GMC | Sierra 1500 | SLT (4.8 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | GMC | Sierra 1500 | SLT (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | GMC | Sierra 1500 | SLE (4.8 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | GMC | Sierra 1500 | SLE (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | GMC | Sierra 2500 | SL (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | GMC | Sierra 2500 | SLT (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | GMC | Sierra 2500 | SLE (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | Chevrolet | Silverado 1500 | LT (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | Chevrolet | Silverado 1500 | LS (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | Chevrolet | Silverado 1500 | Base (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | Chevrolet | Silverado 1500 | Base (4.8 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | Chevrolet | Silverado 1500 | Base (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | Chevrolet | Silverado 1500 | LS (4.8 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | Chevrolet | Silverado 1500 | LS (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | Chevrolet | Silverado 1500 | LT (4.8 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | Chevrolet | Silverado 1500 | LT (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | Chevrolet | Silverado 2500 | Base (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | Chevrolet | Silverado 2500 | Base (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | Chevrolet | Silverado 2500 | LS (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | Chevrolet | Silverado 2500 | LS (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | Chevrolet | Silverado 2500 | LT (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 1999 | Chevrolet | Silverado 2500 | LT (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | Chevrolet | Silverado 1500 | Base (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | Chevrolet | Silverado 1500 | LS (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | Chevrolet | Silverado 1500 | LT (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | Chevrolet | Silverado 1500 | WT (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | Chevrolet | Silverado 2500 | LT (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | Chevrolet | Silverado 2500 | LT (6.0 V8 CNG) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | Chevrolet | Silverado 2500 | LT (6.0 V8 BI-FUEL) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 1500 | Base (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 1500 | SL (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 1500 | SLT (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 1500 | WT (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 1500 | SLE (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 1500 | HT (4.3 V6 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 3500 | Base (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 3500 | SL (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 3500 | SLT (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 3500 | SLE (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Yukon | SLT (4.8 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Yukon | SLT (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Yukon | SLE (4.8 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Yukon | SLE (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Yukon | Denali (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Yukon XL 1500 | SLT (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Yukon XL 1500 | SLE (5.3 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Yukon XL 1500 | Denali (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 2500 HD | SLE (6.0 V8 BI-FUEL) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 2500 HD | SLE (6.0 V8 CNG) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 2500 HD | SLE (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 2500 HD | SLT (6.0 V8 BI-FUEL) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 2500 HD | SLT (6.0 V8 CNG) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 2500 HD | SLT (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 2500 HD | SL (6.0 V8 BI-FUEL) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 2500 HD | SL (6.0 V8 CNG) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 2500 HD | SL (6.0 V8 GAS) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
| 2002 | GMC | Sierra 2500 HD | Base (6.0 V8 BI-FUEL) | Position: Front, Notes: 58.0MM DIA X 30.0MM |
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.






