Rear Tank Support and Rear Shock Mount Crossmember For 99-06 Chevy GMC/Silverado
Rear Tank Support and Rear Shock Mount Crossmember For 99-06 Chevy GMC/Silverado is a heavy-duty steel reinforcement kit priced at $274.87. Designed for 1999–2006 Chevrolet Silverado and GMC Sierra 1500/2500 models, it stabilizes the rear fuel tank and rear shocks to prevent sagging and improve structural integrity during towing or off-road use.
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Key features
- Heavy-duty steel construction for durability
- Direct fit for 99-06 Silverado and Sierra models
- Reinforces rear fuel tank mounting area
- Includes upper rear shock mount crossmember
- Complete dual-component support kit
- Restores factory structural integrity
- Ideal for towing and off-road applications
Pros
- +Restores weakened rear chassis structure
- +Improves safety with secure fuel tank mount
- +Enhances rear suspension stability
- +Durable steel resists rust and stress
- +Comprehensive fix vs. partial repairs
Cons
- −Professional installation required
- −Not for HD models with different frame design
- −May require welding for full integration
About Rear Tank Support and Rear Shock Mount Crossmember For 99-06 Chevy GMC/Silverado
What is Rear Tank Support and Rear Shock Mount Crossmember For 99-06 Chevy GMC/Silverado?
This dual-component reinforcement kit includes one Rear Tank Support Crossmember and one Rear Upper Shock Mount Crossmember, engineered specifically for 1999–2006 Chevrolet Silverado and GMC Sierra 1500 and 2500 trucks. It strengthens the rear chassis area by securing the fuel tank and enhancing shock mounting stability. Over time, factory welds and mounts on these trucks can weaken, especially under heavy loads or rough terrain. This kit helps restore structural rigidity and prevents common issues like fuel tank sag or misaligned suspension components.
Key features
- Heavy-Duty Steel Construction — Built from high-strength steel for long-term durability and corrosion resistance.
- Direct Fit Design — Matches OEM specifications for 1999–2006 Silverado and Sierra models without modifications.
- Fuel Tank Support — Reinforces the rear crossmember that holds the fuel tank on 2500 and 2500HD trims.
- Shock Mount Stability — Includes upper rear shock mount crossmember for 1500 and 2500 Non-HD variants.
- Complete Kit — Includes both critical rear structural supports in one package for full-system reinforcement.
- Professional Installation Recommended — Requires welding or expert mechanical skills for proper fitment.
- Improved Safety — Reduces risk of fuel tank displacement and enhances rear suspension performance.
Who is Rear Tank Support and Rear Shock Mount Crossmember For 99-06 Chevy GMC/Silverado for?
This product is ideal for truck owners restoring, modifying, or maintaining their 1999–2006 Chevrolet Silverado or GMC Sierra. It’s especially valuable for those using their trucks for towing, off-roading, or daily driving in harsh conditions where rear chassis stress is higher. Mechanics, fabricators, and DIY enthusiasts with advanced skills will benefit most from this upgrade.
How does Rear Tank Support and Rear Shock Mount Crossmember For 99-06 Chevy GMC/Silverado compare?
Compared to standard replacement brackets or patch repairs, this full crossmember kit offers superior structural restoration. Unlike single-purpose supports, it combines both fuel tank and shock mount reinforcement in one system. It outperforms temporary fixes and aftermarket braces that don’t match OEM geometry. For older trucks with worn frames, this kit provides a more comprehensive solution than piecemeal repairs or used OEM parts.
Best use cases
- →Restoring aging 99-06 Silverado trucks
- →Upgrading trucks used for heavy towing
- →Off-road builds needing rear rigidity
- →Fixing sagging fuel tank mounts
- →Preventative chassis reinforcement
Is Rear Tank Support and Rear Shock Mount Crossmember For 99-06 Chevy GMC/Silverado right for you?
This kit suits owners of 1999–2006 Chevrolet Silverado and GMC Sierra 1500/2500 models needing rear structural repair. Ideal for advanced DIYers or professionals due to complex installation. Not for HD variants. Alternatives include used OEM parts or partial brackets, but this kit offers better long-term reliability and full-system support.
How it compares: Compared to basic fuel tank straps or aftermarket braces, this crossmember kit provides OEM-matching structural support. It offers more durability and alignment accuracy than patch repairs or universal mounts, especially for trucks with frame fatigue or prior damage.
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What vehicles fit the Rear Tank Support and Rear Shock Mount Crossmember?
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This kit fits 1999–2006 Chevrolet Silverado and GMC Sierra 1500 and 2500 models. The tank support is for 2500/2500HD, while the shock mount fits 1500/2500 Non-HD trims. Verify your truck's configuration before ordering.
Does this kit require welding for installation?
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While bolt-on in design, professional installation is recommended. Some setups may require welding or frame alignment to ensure secure mounting and long-term durability, especially on older or damaged frames.
How does this improve truck performance?
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It restores rear chassis rigidity, preventing fuel tank sag and improving shock alignment. This enhances ride stability, safety, and suspension performance, especially under load or off-road conditions.
Is this compatible with modified or lifted trucks?
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Yes, it can support modified trucks, but proper alignment must be maintained. Lifted trucks with altered suspension geometry should verify fitment or consult a fabricator before installation.
Can I install this myself as a DIY project?
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Only experienced DIYers with welding tools and mechanical knowledge should attempt installation. Proper alignment and secure mounting are critical, so professional help is strongly advised.
How much does Rear Tank Support and Rear Shock Mount Crossmember For 99-06 Chevy GMC/Silverado cost?
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Rear Tank Support and Rear Shock Mount Crossmember For 99-06 Chevy GMC/Silverado is $274.87 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.
Is Rear Tank Support and Rear Shock Mount Crossmember For 99-06 Chevy GMC/Silverado in stock at Lab Work Auto?
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Yes, Rear Tank Support and Rear Shock Mount Crossmember For 99-06 Chevy GMC/Silverado is currently in stock at Lab Work Auto.
Specifications
- SKU
- F8-020235