CU2423 34in Aluminum Radiator Replacement for Chevy/GMC/Tahoe

In this review of the CU2423 34in aluminum radiator replacement, the bottom line is simple: this is a direct-fit cooling upgrade for owners of older Chevy, GMC, Cadillac and Hummer H2 SUVs and trucks who need reliable, heavy-duty cooling without fuss. The reviewer found the radiator to deliver strong heat dissipation from its all-aluminum construction and an OE-style fit that simplifies installation. For drivers who tow, off-road, or operate under heavy loads, the CU2423 promises improved temperature control and a straightforward swap for common OEM numbers like 2423 and 8012423.

Key Features

• Vehicle compatibility: Covers a wide range of Chevrolet, GMC, Cadillac and Hummer H2 models, reducing uncertainty about fit for popular full-size SUVs and trucks.
• All-aluminum construction: Corrosion-resistant aluminum improves heat transfer and longevity under demanding towing or heavy-duty use.
• OE-style fit: Designed as a direct replacement for original part numbers so the radiator drops in with included mounting accessories and minimal modification.
• Core dimensions: A 34in core width, 17.25in core height and 1in core thickness provide the surface area needed for consistent cooling performance.
• Inlet and outlet sizing: Inlet at 1.31in and outlet at 1.56in match common factory hose sizes for a hassle-free plumbing fit.
• Tested reliability: Each unit is leak and pressure tested to meet or exceed OEM expectations and is backed by a 1-year unlimited mileage warranty.

Who It's For

This radiator is best for owners of Cadillac Escalade (2002-2013), Chevrolet Silverado and Suburban models spanning late 1990s through mid 2010s, GMC Yukon families and Hummer H2 (2003-2009) who need a dependable replacement that restores cooling capacity. It is particularly well suited to drivers who tow, frequently haul heavy loads or use their vehicle off-road and require improved heat dissipation compared with aged or damaged stock radiators.

Those who should look elsewhere include buyers of newer-model vehicles not listed in the compatibility chart or anyone requiring a radiator with integrated transmission cooler lines not specified here. Also check fitment tools and factory dimensions carefully before purchasing to ensure exact match for your specific year and engine option.

Pros & Cons

Pros

• Durable all-aluminum build that resists corrosion and improves cooling efficiency.
• OE-style, drop-in fit with included mounting accessories makes installation straightforward for experienced DIYers or shops.
• Comprehensive compatibility across many Chevy, GMC, Cadillac and Hummer H2 platforms reduces fitment guesswork when matched correctly.
• Manufacturer testing and a 1-year unlimited mileage warranty provide added confidence in reliability.

Cons

• Not suitable for vehicles outside the listed model years or for applications needing integrated transmission coolers beyond the specified plumbing.
• Fit depends on confirming exact year and submodel; buyers must verify compatibility rather than assuming universal fit.

Specifications

Core Width	34 in
Core Height	17.25 in
Core Thickness	1 in
Inlet Diameter	1.31 in
Outlet Diameter	1.56 in
Construction	Aluminum
Warranty	1 year unlimited mileage

Our Verdict

The CU2423 34in aluminum radiator is a pragmatic choice for owners of compatible Chevy, GMC, Cadillac and Hummer H2 vehicles who need a reliable, OEM-style replacement that improves cooling under load. It offers solid construction, tested reliability and an easy installation path, making it good value for those replacing worn or damaged radiators on the supported model years.

Frequently Asked Questions

Will this radiator fit my vehicle?
Check the compatibility list for model year ranges and confirm with a vehicle fitment tool or factory part numbers to ensure the CU2423 matches your year and engine.

Does it include mounting hardware?
Yes, the radiator ships with mounting accessories designed to provide a drop-in fit and minimize installation modifications.

Is there a warranty?
Yes, the radiator is backed by a 1-year unlimited mileage warranty and each unit is leak and pressure tested before shipment.