ILONPA AC Air Conditioning Compressor HT6 for Chevy & GMC 1996–2000 — 6‑Groove 126mm Pulley, Prefilled PAG46

ILONPA AC air conditioning compressor with an integrated clutch replaces OEM units for many Chevy, GMC and Cadillac models from the mid‑1990s to early‑2000s.

If your vehicle’s air conditioning has lost cooling power, a worn compressor or clutch can be the culprit. This ILONPA HT6 compressor is supplied prefilled with PAG46 oil and designed to match factory fit and function for a wide range of Chevy and GMC trucks and SUVs plus selected Cadillac and other models. It includes a six‑groove pulley and a 126 mm pulley diameter to align with original drive components.

Which vehicles will this compressor fit?

This unit covers a broad list of GM vehicles built in the mid‑1990s through early‑2000s. Compatibility includes Chevy Blazer, Silverado, Suburban, Tahoe, K‑series trucks, GMC C/K series, Yukon, Jimmy, and select Cadillac Escalade, Isuzu and Oldsmobile derivatives. Because model options and engine packages vary, always verify fitment for your VIN or use a vehicle compatibility tool before ordering.

• Chevy: Blazer, C1500/C2500/C3500, K1500/K2500/K3500, Silverado, Suburban, Tahoe, S10
• GMC: C1500/C2500/C3500, Yukon, Jimmy, Sonoma, P‑series
• Also fits: Cadillac Escalade (1999–2000), Isuzu Hombre, Oldsmobile Bravada

What are the key specifications and replacement numbers?

The compressor is the HT6 type, prefilled with 180 ml of PAG46 oil and features six pulley grooves with a 126 mm pulley diameter. It’s engineered to replace several common part numbers so installation uses existing hoses and mounts where compatible. Confirm replacement part numbers against your vehicle’s service manual or the old unit before purchase.

• Compressor type: HT6
• Oil: PAG46, prefilled 180 ml
• Pulley: 6 grooves, 126 mm diameter
• Cross references: CO20151C, 1020151, 1120151, 1220151, 6511339, CS0120, and others

How should I prepare and install the new compressor?

Proper installation requires the AC system to be flushed and any contaminants removed before fitting the new compressor to avoid premature failure. ILONPA recommends professional installation and system evacuation, recharge, and leak testing after mounting the compressor. If you plan DIY installation, ensure you have the correct tools and follow refrigerant handling regulations.

• Fully clean the AC system and remove cleaning residues
• Use correct refrigerant and oil quantities per vehicle spec
• Perform vacuum, leak test and proper recharge after install
• Consider professional commissioning for best performance

Will this compressor match original performance and durability?

The ILONPA compressor is built to meet common OEM dimensions and oil specifications to restore cooling capacity and clutch engagement similar to the original unit. Longevity depends on proper system preparation, correct refrigerant/oil, and eliminating prior contamination. Replacing worn ancillary parts (drier/accumulator, orifice tube/expansion valve, hoses) helps protect the new compressor.

• Designed to OEM dimensional and oil specs (PAG46)
• Prefilled oil reduces initial handling errors
• Best results when paired with fresh AC components and proper service

Who is this for: This ILONPA compressor is aimed at owners and professional technicians repairing mid‑1990s to early‑2000s GM trucks, SUVs and related models who need a direct‑fit replacement that follows OEM oil and pulley specifications. It’s a practical option for restoring AC cooling when the original compressor or clutch has failed and the rest of the system is verified clean and serviceable.