Direct-fit OE upgrade rear shock for 1999–2007 Silverado 1500 and Sierra 1500 at stock height. Fits 2WD and 4WD. Not for HD, Quadrasteer, or ZX3 Electronic Suspension models. 46mm monotube design. Made in the USA.
The Bilstein 24-029056 B6 4600 Series Rear Shock Absorber is a direct-fit OE upgrade for the GMT800 Chevrolet Silverado 1500 and GMC Sierra 1500 — one of the most popular and enduring full-size truck platforms ever built. Covering 1999 through the 2007 Classic model year, this shock fits the full run of the GMT800 1500-series in both 2WD and 4WD configurations.
Whether your Silverado or Sierra is a daily driver, a weekend work truck, a Z71 trail rig, or a high-mileage commuter, the 4600 series restores and improves rear suspension performance across the board — better rear stability under load, more settled highway composure, improved traction, and a more confident, controlled ride compared to worn or generic OE replacement shocks.
14.1mm eyelet upper and lower — bolt-on rear replacement at stock height for both 2WD and 4WD Silverado/Sierra 1500
Fade-free rear damping under towing, hauling, and off-road loads — consistent performance mile after mile
Fits both two-wheel and four-wheel drive Silverado 1500 and Sierra 1500 configurations at stock height
Designed, engineered, and manufactured in the USA. Backed by Bilstein's limited lifetime warranty
HD Models: Not compatible with Silverado 1500 HD, Sierra 1500 HD, Silverado 2500/3500, or Sierra 2500/3500. This shock is for standard 1500-series configurations only. Quadrasteer: Not compatible with models equipped with the optional Quadrasteer four-wheel steering system. ZX3 Electronic Suspension Package: Not compatible with models equipped with the optional ZX3 electronic/active suspension system. Verify your truck's factory option codes before ordering. If your Silverado or Sierra has any of these options or configurations, a different part number is required.
Sold Individually: One shock absorber per package. Order qty 2 for a complete rear axle replacement. Stock Height Only: The B6 4600 Series is for stock-height applications only. For lifted Silverado/Sierra 1500 trucks, see the Bilstein B8 5100 series. 2007 Classic: Includes the 2007 Silverado 1500 Classic and Sierra 1500 Classic — the carryover model sold alongside the new GMT900 in 2007.
In The Box (Qty: 1 Shock Absorber): • Bilstein 24-029056 Rear Shock Absorber • Blue Protective Boot • Black Rubber Bushings NOT Included: • Mounting Hardware (uses existing OEM hardware) • Second shock (sold individually — order qty 2 for a complete rear pair)
24-065009 — Front B6 4600 shock for 1999–2007 Silverado/Sierra 1500 4WD (torsion bar, without ESC) For second-generation Silverado/Sierra 1500 (2007–2013 GMT900), see Bilstein 24-186841 (rear).
Bilstein Official Product Page Bilstein Technical Support: Website: www.bilstein.com Warranty: Limited Lifetime for original purchaser — B6 4600 series gas pressure shocks. Proof of purchase required. See full terms at Bilstein's website.
The 24-029056 fits the following vehicles at stock ride height, without Quadrasteer, and without the ZX3 Electronic Suspension Package. Fits 2WD and 4WD. Not for HD models. Sold individually — order two for a complete rear replacement.
⚠️ Fitment cross-referenced across Amazon, Suspension Lifts, Jack-It, AmericanTrucks, and Shock Surplus. Factory options including Quadrasteer and ZX3 affect fitment — always verify your truck's option codes before ordering. Not compatible with HD (1500 HD, 2500, 3500) models.