Direct-fit OE upgrade rear shock for 1988–2000 Chevrolet/GMC C-Series trucks and SUVs, and 2006–2010 Hummer H3/H3T at stock height. 46mm monotube nitrogen gas design. Bar pin upper / eyelet lower mount. No hardware included. Made in the USA.
The Bilstein 24-016988 B6 4600 Series Rear Shock Absorber covers two distinct but related platforms with a single part number. For GMT400 C-Series (2WD) owners — C1500, C2500, C3500, Tahoe, Suburban, and Yukon — this is the correct rear shock for stock-height two-wheel drive trucks and SUVs built between 1988 and 2000. For Hummer H3 and H3T owners, this is the direct-fit rear upgrade for the 2006–2010 model years.
Precisely valved for each application, the 46mm monotube design delivers improved rear axle control, better stability under load, and a more settled, composed ride compared to worn or generic OE replacements. Whether you're driving a high-mileage work truck, a classic GMT400, or a Hummer H3 used for trail and off-road driving, this is the most cost-effective rear suspension upgrade available.
Bar pin upper / eyelet lower — direct bolt-on rear shock replacement at stock height using OEM mounting hardware
Fade-free rear damping under towing, hauling, and off-road loads — consistent performance regardless of conditions
Fits both GMT400 C-Series (1988–2000) and Hummer H3/H3T (2006–2010) — verified across all body styles
Designed, engineered, and manufactured in the USA. Backed by Bilstein's limited lifetime warranty
2WD C-Series Only (GMT400): For GMT400 trucks, this shock fits the C-Series (2WD) models only — C1500, C2500, C3500, Tahoe, C1500 Suburban, and Yukon. For K-Series (4WD) GMT400 trucks, see Bilstein 24-020435. Hardware Not Included: Mounting hardware is not included — this shock uses your existing OEM hardware. 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. GMC Year Differences: Some GMC models have slightly different year spans than their Chevrolet counterparts — verify your specific year and brand against the fitment table below.
In The Box (Qty: 1 Shock Absorber): • Bilstein 24-016988 Rear Shock Absorber • Blue Protective Boot • Black Rubber Bushings NOT Included: • Mounting Hardware (uses existing OEM hardware) • Dust Shield • Second shock (sold individually — order qty 2 for a complete rear pair)
24-016971 — Front B6 4600 shock for 1988–1999 Chevrolet/GMC C-Series (pairs with this rear shock for C-Series trucks) 24-020435 — Rear B6 4600 shock for 1988–1999 Chevrolet K1500 / 1988–1998 GMC K1500 (4WD K-Series equivalent) Replacing front and rear shocks together delivers the most balanced improvement in ride quality and handling for GMT400 C-Series trucks.
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 24-016988 fits the following vehicles at stock ride height. For GMT400 trucks, this is the C-Series (2WD) rear shock — not for K-Series (4WD) trucks. Sold individually — order two for a complete rear replacement.
⚠️ Fitment cross-referenced across LM Performance, ShockWarehouse, GTA Jeeps & Trucks, and Shock Surplus. For GMT400 4WD (K-Series) trucks, order Bilstein 24-020435 instead. Note the GMC C2500 ends at 1998 while the Chevrolet C2500 runs through 2000 — verify your specific year and brand before ordering.