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          ACDelco 14PB4055 - Power Brake Booster

          MPN: 14PB4055
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $99.95
          Out of stock

          Product Overview

          The ACDelco 14PB4055 Power Brake Booster is designed to enhance your vehicle's braking system by improving pedal feel and responsiveness. This high-quality part ensures optimal performance and reliability, making it an essential component for safe driving. With OE-level fitment, this booster is trusted by Chevrolet and GMC owners alike, specifically for models like the Silverado and Sierra. Choose ACDelco 14PB4055 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This ACDelco 14PB4055 is equivalent to or replaces the following part numbers:

          Vehicle Compatibility

          • Chevrolet (2007-2010) Silverado 2500 HD 6.0 V8
          • Chevrolet (2007-2010) Silverado 2500 HD 6.6 V8
          • Chevrolet (2007-2010) Silverado 3500 HD 6.0 V8
          • Chevrolet (2007-2010) Silverado 3500 HD 6.6 V8
          • Chevrolet (2007-2011) Suburban 2500 6.0 V8
          • GMC (2007-2010) Sierra 2500 HD 6.0 V8
          • GMC (2007-2010) Sierra 2500 HD 6.6 V8
          • GMC (2007-2010) Sierra 3500 HD 6.0 V8
          • GMC (2007-2010) Sierra 3500 HD 6.6 V8
          • GMC (2007-2011) Yukon XL 2500 6.0 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 14PB4055 Power Brake Booster?

          The ACDelco 14PB4055 enhances braking performance by increasing the force applied to the brake pedal, resulting in better stopping power.

          Will the ACDelco 14PB4055 fit my GMC Sierra 2500 HD?

          Yes, the ACDelco 14PB4055 is specifically designed to fit GMC Sierra 2500 HD models from 2007 to 2010.

          What are some common symptoms of a failing brake booster?

          Common symptoms include a hard brake pedal, increased stopping distance, and hissing noises when pressing the brake pedal.

          Are there any diagnostic trouble codes (DTCs) related to brake boosters?

          Yes, common DTCs that may indicate issues with the brake system include C0240, C0241, and C0242.

          Why should I choose the ACDelco 14PB4055 for my vehicle?

          Choosing the ACDelco 14PB4055 means you're selecting a reliable, OE-quality part that restores your vehicle's braking performance efficiently. Order ACDelco 14PB4055 today for a factory-correct replacement that restores safety and performance.

            • Newparts SKU
              1685749
            • Weight
              14.04 lbs
            • Dimensions (L x W x H)
              19.5 x 8.1 x 8.6 in
            • Manufacturer Part #
              14PB4055
          • Brand
            ACDelco
          • Manufacturer
            ACDelco
          • MPN
            14PB4055
          • Features
            Booster Type : Hydraulic
            Brake Pedal Rod Extension Included : Yes
            Brake Service Grade : Performance
            Housing Material : Cast Iron
            Master Cylinder Included : No
            Mounting Bracket Included : Yes
            Mounting Hardware Included : No
          • Part Type
            Power Brake Booster
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          2007ChevroletSuburban 2500LS (6.0 V8 GAS)Notes: GM Brake Code JH7, , GM Brake Code JH6, , GM Brake Codes are on the "Service Parts Identification" sticker., , without Master Cylinder,
          2007ChevroletSuburban 2500LT (6.0 V8 GAS)Notes: GM Brake Code JH7, , GM Brake Code JH6, , GM Brake Codes are on the "Service Parts Identification" sticker., , without Master Cylinder,
          2007ChevroletSuburban 2500LTZ (6.0 V8 GAS)Notes: GM Brake Code JH7, , GM Brake Code JH6, , GM Brake Codes are on the "Service Parts Identification" sticker., , without Master Cylinder,
          2007ChevroletSilverado 2500 HDLTZ (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2007ChevroletSilverado 2500 HDLTZ (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2007ChevroletSilverado 2500 HDWT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2007ChevroletSilverado 2500 HDWT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2007ChevroletSilverado 2500 HDLT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2007ChevroletSilverado 2500 HDLT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2007ChevroletSilverado 3500 HDLT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2007ChevroletSilverado 3500 HDLT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2007ChevroletSilverado 3500 HDLTZ (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2007ChevroletSilverado 3500 HDLTZ (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2007ChevroletSilverado 3500 HDWT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2007ChevroletSilverado 3500 HDWT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2007GMCYukon XL 2500SLE (6.0 V8 GAS)Notes: GM Brake Code JH6, , GM Brake Codes are on the "Service Parts Identification" sticker., , GM Brake Code JH7, , without Master Cylinder,
          2007GMCYukon XL 2500SLT (6.0 V8 GAS)Notes: GM Brake Code JH6, , GM Brake Codes are on the "Service Parts Identification" sticker., , GM Brake Code JH7, , without Master Cylinder,
          2007GMCSierra 2500 HDSLT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2007GMCSierra 2500 HDSLT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2007GMCSierra 2500 HDWT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2007GMCSierra 2500 HDWT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2007GMCSierra 2500 HDSLE (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2007GMCSierra 2500 HDSLE (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2007GMCSierra 3500 HDSLE (6.6 V8 DIESEL)Notes: with Hydro-Boost, , without Master Cylinder,
          2007GMCSierra 3500 HDSLE (6.0 V8 GAS)Notes: with Hydro-Boost, , without Master Cylinder,
          2007GMCSierra 3500 HDSLT (6.0 V8 GAS)Notes: with Hydro-Boost, , without Master Cylinder,
          2007GMCSierra 3500 HDSLT (6.6 V8 DIESEL)Notes: with Hydro-Boost, , without Master Cylinder,
          2007GMCSierra 3500 HDWT (6.0 V8 GAS)Notes: with Hydro-Boost, , without Master Cylinder,
          2007GMCSierra 3500 HDWT (6.6 V8 DIESEL)Notes: with Hydro-Boost, , without Master Cylinder,
          2008ChevroletSilverado 2500 HDLT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2008ChevroletSilverado 2500 HDLT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2008ChevroletSilverado 2500 HDLTZ (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2008ChevroletSilverado 2500 HDLTZ (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2008ChevroletSilverado 2500 HDWT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2008ChevroletSilverado 2500 HDWT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2008ChevroletSilverado 3500 HDLT (6.6 V8 DIESEL)Notes: with Hydro-Boost, , without Master Cylinder,
          2008ChevroletSilverado 3500 HDLT (6.0 V8 GAS)Notes: with Hydro-Boost, , without Master Cylinder,
          2008ChevroletSilverado 3500 HDLTZ (6.6 V8 DIESEL)Notes: with Hydro-Boost, , without Master Cylinder,
          2008ChevroletSilverado 3500 HDLTZ (6.0 V8 GAS)Notes: with Hydro-Boost, , without Master Cylinder,
          2008ChevroletSilverado 3500 HDWT (6.0 V8 GAS)Notes: with Hydro-Boost, , without Master Cylinder,
          2008ChevroletSilverado 3500 HDWT (6.6 V8 DIESEL)Notes: with Hydro-Boost, , without Master Cylinder,
          2008ChevroletSuburban 2500LS (6.0 V8 GAS)Notes: without Master Cylinder, , GM Brake Codes are on the "Service Parts Identification" sticker., , GM Brake Code JH7, , GM Brake Code JH6,
          2008ChevroletSuburban 2500LT (6.0 V8 GAS)Notes: without Master Cylinder, , GM Brake Codes are on the "Service Parts Identification" sticker., , GM Brake Code JH7, , GM Brake Code JH6,
          2008GMCYukon XL 2500SLE (6.0 V8 GAS)Notes: GM Brake Codes are on the "Service Parts Identification" sticker., , GM Brake Code JH6, , without Master Cylinder, , GM Brake Code JH7,
          2008GMCYukon XL 2500SLT (6.0 V8 GAS)Notes: GM Brake Codes are on the "Service Parts Identification" sticker., , GM Brake Code JH6, , without Master Cylinder, , GM Brake Code JH7,
          2008GMCSierra 3500 HDSLE (6.6 V8 DIESEL)Notes: with Hydro-Boost, , without Master Cylinder,
          2008GMCSierra 3500 HDSLE (6.0 V8 GAS)Notes: with Hydro-Boost, , without Master Cylinder,
          2008GMCSierra 3500 HDSLT (6.0 V8 GAS)Notes: with Hydro-Boost, , without Master Cylinder,
          2008GMCSierra 3500 HDSLT (6.6 V8 DIESEL)Notes: with Hydro-Boost, , without Master Cylinder,
          2008GMCSierra 3500 HDWT (6.0 V8 GAS)Notes: with Hydro-Boost, , without Master Cylinder,
          2008GMCSierra 3500 HDWT (6.6 V8 DIESEL)Notes: with Hydro-Boost, , without Master Cylinder,
          2008GMCSierra 2500 HDSLE (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2008GMCSierra 2500 HDSLE (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2008GMCSierra 2500 HDSLT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2008GMCSierra 2500 HDSLT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2008GMCSierra 2500 HDWT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2008GMCSierra 2500 HDWT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2009ChevroletSilverado 3500 HDLT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2009ChevroletSilverado 3500 HDLT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2009ChevroletSilverado 3500 HDLTZ (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2009ChevroletSilverado 3500 HDLTZ (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2009ChevroletSilverado 3500 HDWT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2009ChevroletSilverado 3500 HDWT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2009ChevroletSilverado 2500 HDLT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2009ChevroletSilverado 2500 HDLT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2009ChevroletSilverado 2500 HDLTZ (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2009ChevroletSilverado 2500 HDLTZ (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2009ChevroletSilverado 2500 HDWT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2009ChevroletSilverado 2500 HDWT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2009ChevroletSuburban 2500LS (6.0 V8 GAS)Notes: GM Brake Codes are on the "Service Parts Identification" sticker., , without Master Cylinder, , GM Brake Code JH6, , GM Brake Code JH7,
          2009ChevroletSuburban 2500LT (6.0 V8 GAS)Notes: GM Brake Codes are on the "Service Parts Identification" sticker., , without Master Cylinder, , GM Brake Code JH6, , GM Brake Code JH7,
          2009GMCSierra 2500 HDSLE (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2009GMCSierra 2500 HDSLE (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2009GMCSierra 2500 HDSLT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2009GMCSierra 2500 HDSLT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2009GMCSierra 2500 HDWT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2009GMCSierra 2500 HDWT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2009GMCSierra 3500 HDSLE (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2009GMCSierra 3500 HDSLE (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2009GMCSierra 3500 HDSLT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2009GMCSierra 3500 HDSLT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2009GMCSierra 3500 HDWT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2009GMCSierra 3500 HDWT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2009GMCYukon XL 2500SLE (6.0 V8 GAS)Notes: GM Brake Code JH6, , GM Brake Codes are on the "Service Parts Identification" sticker., , GM Brake Code JH7, , without Master Cylinder,
          2009GMCYukon XL 2500SLT (6.0 V8 GAS)Notes: GM Brake Code JH6, , GM Brake Codes are on the "Service Parts Identification" sticker., , GM Brake Code JH7, , without Master Cylinder,
          2010ChevroletSuburban 2500LS (6.0 V8 FLEX)Notes: without Master Cylinder, , with Hydro-Boost,
          2010ChevroletSuburban 2500LT (6.0 V8 FLEX)Notes: without Master Cylinder, , with Hydro-Boost,
          2010ChevroletSilverado 2500 HDLT (6.0 V8 GAS)Notes: with Hydro-Boost, , without Master Cylinder,
          2010ChevroletSilverado 2500 HDLT (6.6 V8 DIESEL)Notes: with Hydro-Boost, , without Master Cylinder,
          2010ChevroletSilverado 2500 HDLTZ (6.6 V8 DIESEL)Notes: with Hydro-Boost, , without Master Cylinder,
          2010ChevroletSilverado 2500 HDLTZ (6.0 V8 GAS)Notes: with Hydro-Boost, , without Master Cylinder,
          2010ChevroletSilverado 2500 HDWT (6.0 V8 GAS)Notes: with Hydro-Boost, , without Master Cylinder,
          2010ChevroletSilverado 2500 HDWT (6.6 V8 DIESEL)Notes: with Hydro-Boost, , without Master Cylinder,
          2010ChevroletSilverado 3500 HDLT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2010ChevroletSilverado 3500 HDLT (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2010ChevroletSilverado 3500 HDLTZ (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2010ChevroletSilverado 3500 HDLTZ (6.0 V8 GAS)Notes: without Master Cylinder, , with Hydro-Boost,
          2010ChevroletSilverado 3500 HDWT (6.6 V8 DIESEL)Notes: without Master Cylinder, , with Hydro-Boost,
          2010ChevroletSilverado 3500 HDWT (6.0 V8 GAS)
          2010GMCYukon XL 2500SLE (6.0 V8 FLEX)Notes: without Master Cylinder, , with Hydro-Boost,
          There are more vehicles this part is compatible with. Check if it fits your vehicle.
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          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.

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