Universal Air RD1801C A/C Accumulator - Front

Universal Air RD1801C A/C Accumulator

The Universal Air RD1801C is an A/C accumulator for select GM and Hummer applications with confirmed fitment across 1999-2009 model years. It is listed for vehicles such as Chevrolet Silverado, Tahoe, Suburban, Avalanche, GMC Sierra, Yukon, Cadillac Escalade, and Hummer H2/H1 configurations that use the specified accumulator layout.

Key Features

• Brand: Universal Air
• Brand line: Accumulator
• Part number: RD1801C
• Category: HVAC A/C accumulator / receiver drier
• Fits applications with N/A or front position listings as shown in the fitment data
• Includes coverage for vehicles with and without rear A/C, depending on application notes
• Fits models with P-Nut fitting at 12 o’clock where specified

Fitment Details

• Fits 2007-2009 Chevrolet Avalanche, N/A, 2nd Design; P-Nut Fitting at 12 O'Clock; Accumulator
• Fits 2003-2009 Hummer H2, N/A, Accumulator
• Fits 2007 GMC Sierra 2500 HD Classic, N/A, with Rear A/C; without Rear A/C; 1st Design; Accumulator
• Fits 2006 Cadillac Escalade, N/A, without Rear A/C; P-Nut Fitting at 12 O'Clock; Accumulator
• Fits 2003-2006 Cadillac Escalade ESV, N/A, without Rear A/C; P-Nut Fitting at 12 O'Clock; 1st Design; Accumulator
• Fits 1999-2006 Chevrolet Silverado 1500, N/A, P-Nut Fitting at 12 O'Clock; 1st Design; Accumulator
• Fits 2003-2006 Chevrolet Tahoe, N/A, without Rear A/C; P-Nut Fitting at 12 O'Clock; Accumulator
• Fits 2000-2006 GMC Yukon, N/A, without Rear A/C; P-Nut Fitting at 12 O'Clock; 1st Design; Accumulator
• Fits 2002-2005 Chevrolet Suburban 1500, N/A, Fitment: Excludes rear A/C; Accumulator
• Fits 2002-2004 Hummer H1, N/A, Accumulator

What This Part Helps Address

• Moisture control issues in the A/C system
• Refrigerant storage and flow irregularities
• Service replacement for a leaking or damaged accumulator
• Restoration of proper HVAC operation after A/C repairs
• Fitment-specific replacement needs on GM truck and SUV platforms

Installation Notes

Verify the vehicle’s rear A/C configuration, design revision, and fitting orientation before ordering. This part number is listed for multiple GM truck and SUV applications, including Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade variants, so matching the exact year, model, and notes is important for correct installation. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Quality Assurance

Universal Air identifies RD1801C within its Accumulator product line for HVAC service applications. Confirm the listed fitment notes against the vehicle before installation to ensure the correct A/C accumulator is selected.