Drivetrain› Differentials and Rear-End Components

GMC

Rear Axle Assembly with 4.10 Gearing and G80 Locking

$350.00

SKU: GT5-G80

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Overview

The GMC GT5-G80 is a rear axle assembly featuring a 4.10 gear ratio and a G80 locking differential. This combination is often found in Chevrolet and GMC trucks and SUVs. The GT5 RPO code indicates the 4.10 gearing, while the G80 code signifies the automatic locking rear differential.

This assembly is compatible with various Chevrolet and GMC models, including Silverado, Sierra, C2500, and 3500 HD Dually trucks, as well as Suburban 2500 and Yukon. Specific model year fitment varies, with applications noted for 1988-2000 C2500, 2001-2006 3500 HD Dually, and potentially other GM trucks from those eras.
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The GMC GT5-G80 is a rear axle assembly that integrates a 4.10 gear ratio (GT5 RPO code) with an automatic locking rear differential (G80 RPO code). The GT5-G80 axle is known for its compatibility with a range of GM vehicles. Fitment has been identified for specific model ranges including the 1988-2000 Chevrolet C2500 and 1998 GMC 3500 pickup trucks. It is also noted as being compatible with 2001-2006 Chevrolet Silverado and GMC Sierra 3500 HD Dually models, specifically the Cab & Chassis configurations, as well as the Suburban 2500. When considering this axle assembly, it's important to note that while it shares RPO codes GT5 and G80, direct bolt-up compatibility between different truck platforms (e.g., 2500 to 1500) may require further investigation into specific year and model variations. The 'G80 Locking rear-end' is a mechanical system that engages automatically when wheel slip is detected, providing a significant traction advantage in low-grip scenarios. Applications discussed in forums include potential swaps for 2008-2009 Silverado models, and it's noted that earlier S-10 and Blazer models might have also used these RPO codes, though specific fitment for those smaller platforms requires careful verification.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandGMC
Part NumberGT5-G80
CategoryDrivetrain
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