How do I know if my shocks are worn?

Signs include: excessive bouncing after bumps, nose diving when braking, swaying in turns, uneven tire wear, and oil leaking from the shock body. Compatible vehicles include 2021-2026 Chevrolet Trailblazer and more.

Should shocks be replaced in pairs?

Yes, always replace shocks in axle pairs (both front or both rear) to maintain balanced damping and vehicle stability.

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We can’t guarantee fitment or accept fitment returns without a vehicle selected.

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GM Genuine Parts Rear Shock Absorber 42599556

Name: GM Genuine Parts Rear Shock Absorber 42599556
Brand: GM Genuine Parts
SKU: 42599556
Availability: OutOfStock
Rating: 4.9 (12847 reviews)

Part # 42599556

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GM Genuine Parts Rear Shock Absorber 42599556

Bracket End | Eye Ring | Boot Incl

$000

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30-day return policy.

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Trusted since 2019 — quality at fair prices.

Vehicle Compatibility

No compatibility data available for this part.

Specifications

Brand: GM Genuine Parts

Part Number: 42599556

Part Type: Suspension Shock Absorber

Condition: New

Qty Per Vehicle: 2

Body Diameter: 1.65 IN

Boot Included: Yes

Coil Over Springs Included: No

Compressed Length: 15.29 IN

Extended Length: 21.48 IN

Grade Type: Standard

Length (In): 26.5 in

Lower Mount Type: Eye Ring

Type: Telescopic

Upper Mount Type: Bracket End

Adjustable: No

Dust Shield: Yes

Features Benefits - Bullet 1: Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)

Features Benefits - Bullet 2: GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors

Features Benefits - Bullet 3: GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle

Features Benefits - Bullet 4: GM regularly updates production and service part designs to integrate new materials and technologies

Height (In): 4.5 in

Product Description: GM Genuine Parts Suspension Shock Absorbers are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the p

Programming Required: No

Shock Absorber Body End Measuring Point: 13

Shock Absorber Rod End Measuring Point: 10

Shock Stroke: 6.19 IN

Weight: 4.92 LB

Width (In): 5.69 in

Warranty: 24 Months

Frequently Asked Questions

We're always here to help. If you can't find your answer, ask Rydon - our AI assistant will help you out.

What vehicles does this Suspension Shock Absorber fit?

This GM Genuine Parts Suspension Shock Absorber (Part #42599556) fits specific vehicles. Use the compatibility checker on this page to verify fitment for your vehicle.

Is this an OEM or aftermarket part?

This is a premium aftermarket Suspension Shock Absorber by GM Genuine Parts, designed to meet or exceed OEM specifications with strict quality control standards.

What warranty is included?

This GM Genuine Parts Suspension Shock Absorber is backed by a 24-month limited warranty covering defects in materials and workmanship from date of purchase.

How long does shipping take?

Free standard shipping on all orders. Most orders ship within 1-2 business days and arrive within 3-5 business days.

Can I return this if it does not fit?

30-day money-back guarantee. Return unused parts in original packaging for full refund.

Product Specifications

Brand

GM Genuine Parts

Part Type

Suspension Shock Absorber

Boot Included

Yes

Compressed Length

15.29 IN

Part Number

42599556

Body Diameter

1.65 IN

Coil Over Springs Included

Extended Length

21.48 IN

Body Diameter1.65 IN

Boot IncludedYes

Coil Over Springs IncludedNo

Compressed Length15.29 IN

Extended Length21.48 IN

Grade TypeStandard

Length (In)26.5 in

Lower Mount TypeEye Ring

TypeTelescopic

Upper Mount TypeBracket End

AdjustableNo

Dust ShieldYes

Features Benefits - Bullet 1Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)

Features Benefits - Bullet 2GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors

Features Benefits - Bullet 3GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle

Features Benefits - Bullet 4GM regularly updates production and service part designs to integrate new materials and technologies

Height (In)4.5 in

Product DescriptionGM Genuine Parts Suspension Shock Absorbers are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the p

Programming RequiredNo

Shock Absorber Body End Measuring Point13

Shock Absorber Rod End Measuring Point10

Shock Stroke6.19 IN

Weight4.92 LB

Width (In)5.69 in

No image

Part # 42599556

GM Genuine Parts Rear Shock Absorber 42599556

Brand GM Genuine PartsCondition NewSuspension Shock AbsorberPosition RearQty / vehicle 224-mo warranty

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888-477-2530

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Part #:42599556

Call 888-477-2530 for Price

OE REPLACEMENT

GM Genuine Parts Rear Shock Absorber 42599556

Part #:42599556

Suspension Shock Absorber

Call for Price

888-477-2530

Our parts specialists are ready to help you find the best price.

Quantity:

Out of Stock

Shipping calculated at checkout · Est. arrival Fri, Aug 14 to Fri, Aug 14

Ships To:

Call 888-477-2530 for Price

Key Features

OEM-Equivalent QualityMeets/exceeds factory specs

American BusinessMaryland since 1986

24-Month WarrantyLimited coverage on every part

Free Same Day ShippingWe ship all orders the same business day before cutoff

Product HighlightsBeta

Reading the catalog · checking interchanges · researching…

GM Genuine Parts Rear Shock Absorber 42599556

Part # 42599556

Main Image

Click to expand

Special Offer

Buy 2, Get 5% Off

2 for $0.00•Save $0.00

Call for Price

888-477-2530

Our parts specialists are ready to help you find the best price.

Part #:42599556

Call 888-477-2530 for Price

OE REPLACEMENT

GM Genuine Parts Rear Shock Absorber 42599556

Part #:42599556

Suspension Shock Absorber

Call for Price

888-477-2530

Our parts specialists are ready to help you find the best price.

Quantity:

Out of Stock

Shipping calculated at checkout · Est. arrival Fri, Aug 14 to Fri, Aug 14

Ships To:

Call 888-477-2530 for Price

Key Features

OEM-Equivalent QualityMeets/exceeds factory specs

American BusinessMaryland since 1986

24-Month WarrantyLimited coverage on every part

Free Same Day ShippingWe ship all orders the same business day before cutoff

WARNING: Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which are known to the State of California to cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts

Check if this fits your car first

GM Genuine Parts Rear Shock Absorber 42599556

GM Genuine Parts Rear Shock Absorber 42599556

Vehicle Compatibility

Specifications

Frequently Asked Questions

Product Specifications

GM Genuine Parts Rear Shock Absorber 42599556

GM Genuine Parts Rear Shock Absorber 42599556

Key Features

GM Genuine Parts Rear Shock Absorber 42599556

GM Genuine Parts Rear Shock Absorber 42599556

Key Features

About This Suspension Shock Absorber

Key Features

Signs This Part Needs Replacement

GM Genuine Parts

Installation Guide

Tools Needed

Frequently Asked Questions