GM Genuine Parts 15-20189 Air Conditioning Compressor
$182.99 price checked August 2026
If you require a vehicle specific fit for a professional application, this is the right choice to price-check.
Where the GM Air Compressor Fits
The GM Genuine Parts 15-20189 Air Conditioning Compressor is for owners seeking an OEM replacement for specific vehicle models, as it provides the exact fit type required to maintain factory cooling standards.
Restoring a vehicle’s climate control to its factory state ensures that the interior remains comfortable regardless of outside temperatures. A reliable compressor maintains consistent pressure and flow, allowing the AC system to engage and disengage without strain on the engine’s belt or pulley system.
The GM Genuine Parts 15-20189 Air Conditioning Compressor achieves this reliability through its status as a leading manufacturer of high-quality products. Its design focuses on meeting the demands of the modern user by providing a durable, state-of-the-art replacement for worn-out units.
Our comparison involved the GM Genuine Parts 15-20189 Air Conditioning Compressor and the other ac compressor replacement for car options we evaluated. This review is for those who want to ensure their repair meets the exact standards of the vehicle’s original engineering.
For another alternative, read our full review of the GG377 Compressor to compare performance.
How ExtremeSpec Auto picked: we started from the 200 most-reviewed ac compressor replacement for car listings in our retail dataset, removed duplicates, accessories and off-category products, and 75 qualified. This product is one of 10 from that pool chosen for a full review. Our scores blend buyer satisfaction (60%), price position against comparable products (25%) and rating volume (15%). Specifications come from manufacturer listings and ratings from verified Amazon buyer reviews (data checked August 2026).
The Short Answer on the GM Air Compressor
Best for: you need a vehicle-specific replacement that meets original equipment standards for a GM vehicle.
The GM Genuine Parts 15-20189 Air Conditioning Compressor is the recommended choice at $182.99.
- Pro: The GM Air Compressor is a vehicle-specific fit designed for exact compatibility.
- Pro: It carries a 4.1 rating from 442 buyers.
- Pro: The unit is produced by the original equipment manufacturer.
- Con: The $182.99 price point is higher than many third-party alternatives like R&Y or ECCPP.
- Con: As a vehicle-specific part, it cannot be used as a universal fit for different makes or models.
Don’t buy this if: your vehicle requires a different bolt pattern or drive shaft diameter than the GM 15-20189 specifications.
Price assessment: The $182.99 price is fair for an original equipment part from a leading manufacturer.
ExtremeSpec Auto score: 7.5/10 (data-driven – see “How we picked” above)
The Specifications That Matter
| Manufacturer Part Number | 15-20189 |
| OEM Part Number | 88964862 |
| Voltage | 28 Volts |
| Motor Horsepower | 1 horsepower |
| Capacity | 5.3 Liters |
| Item Weight | 16.04 pounds |
| Noise Level | 14.4 Decibels |
The GM Air Compressor matches the OEM Part Number 88964862, ensuring it meets the specific requirements for original equipment replacement.
Where this sits in the buyer data: Among the 74 products screened for this category, this one’s 4.1 rating places it #39, on 442 ratings – above the 14-rating median of that group, so the average rests on more feedback than most of its comparables. On price it undercuts 33 of them.
Before You Buy: GM Air Compressor Checklist
The first thing to check is the vehicle-specific fitment, as air conditioning compressors are not universal across different makes and models.
- ☐ Verify the vehicle-specific fit type — GM Genuine Parts 15-20189
- ☐ Confirm the manufacturer part number — 15-20189
- ☐ Check the brand source — GM
- ☐ Budget for the unit price — around $182.99
- ☐ Confirm included hardware — Check if the listing includes the pulley and clutch, as these are often sold separately from the compressor body
You should not buy this product if your vehicle requires a non-GM specific compressor or if your local regulations require a certified technician to perform the installation.
Performance: What the Specs Deliver
Professional Grade Design
The GM Air Compressor features a vehicle-specific fit designed for professional use. This design ensures the unit aligns with the original equipment requirements for your specific car model. You can rely on the precision of a vehicle-specific fit to ensure the mounting points and shaft diameters match your existing system without the need for modifications.
Modernized Device Engineering
Modernized device engineering in the GM Air Compressor allows for efficient heat exchange and refrigerant circulation. Because the unit is designed for the modern user, it supports a faster transition to cold temperatures compared to older, less efficient designs. If the provided data does not specify a precise cooling time, you must confirm the cooling speed by checking the compressor’s displacement and pressure ratings against your vehicle’s manufacturer specifications.
How the GM Air Compressor Compares to Alternatives
The GM Genuine Parts 15-20189 Air Conditioning Compressor ranks 3rd highest-rated of the 6 options we evaluated, offering a 4.1 rating from 442 buyer ratings.
- The GM Air Compressor costs $2.99 more than the Delphi CS20072 Air Conditioning Compressor.
- The RYC Automotive Air Conditioning Compressor and A/C Clutch Kit has a 4.1 rating, which ties the GM Air Compressor.
- The International Navistar Sanden Replacement AC Compressor 4720 has a 4.4 rating, which is higher than the GM Air Compressor.
- The ACDelco 15-22359 Air Conditioning Compressor costs $6 less than the GM Air Compressor.
- The PANGOLIN 88310-52550 Air Conditioning Compressor costs $3 more than the International Navistar Sanden Replacement AC Compressor 4720.
If you require the lowest price point, the International Navistar Sanden Replacement AC Compressor 4720 or the PANGOLIN 88310-52550 Air Conditioning Compressor are the better picks at $179.99.
The GM Genuine Parts 15-20189 Air Conditioning Compressor is a brand new factory component. If the listing does not explicitly state “new,” confirm the item is not a remanufactured or refurbished unit before ordering.
You may also want to see our full review of the ACDelco 15-20941 Compressor for a different brand option.
If you need a different configuration, look at the RYC Automotive GG560 Compressor review for more data.
The GM Air Compressor: Remaining Questions
Frequently Asked Questions
Is it worth paying more for a GM Genuine Parts 15-20189 Air Conditioning Compressor over a generic one?
The GM Air Compressor provides a genuine manufacturer fit for the specific vehicle, which reduces the risk of bolt pattern mismatches or shaft diameter variances. While a generic unit might have a lower upfront cost, the GM brand offers peace of mind regarding the internal pressure limits and seal durability.
How many miles does this part usually last before it starts leaking?
The provided specifications do not list a specific mileage rating or expected lifespan for the GM Air Compressor. You should verify the manufacturer’s warranty terms or consult a service manual to determine the typical service life for this specific model’s seals.
Will the GM Genuine Parts 15-20189 Air Conditioning Compressor fit my specific vehicle?
Yes, the GM Air Compressor is a vehicle-specific fit designed to match the original equipment specifications. You must confirm your vehicle’s exact year, make, and model before ordering to ensure the mounting holes and shaft diameter align with your current setup.
Should I buy the GM Genuine Parts 15-20189 Air Conditioning Compressor?
If you prioritize a factory-spec component over an aftermarket alternative, the GM Air Compressor is a reliable choice. The $182.99 price point reflects its status as a genuine GM part with a 4.1 rating from 442 buyers.
To better understand technical specifications, view our guide to AC compressor terms and specs for clarity.
Make sure you select the correct power supply by seeing how to choose your AC compressor voltage for your vehicle.
Is the GM Air Compressor Right for You?
The GM Air Compressor suits 4 kinds of buyer and is the wrong choice for 3 jobs, listed below with the reason for each.
Who the GM Air Compressor is for, and what it does well
Who the GM Air Compressor suits
- GM vehicle owners — the vehicle-specific fit type ensures compatibility with their specific car model
- Independent auto repair technicians — the professional-grade design meets the demands of high-volume workshop use
- DIY car hobbyists — the genuine manufacturer status ensures high-quality parts for home repairs
- Fleet maintenance managers — the state-of-the-art technology ensures reliable cooling for modern vehicle demands
What the GM Air Compressor handles well
- Replacing a failed AC unit — the vehicle-specific fit type ensures a direct swap
- Restoring factory cooling performance — the genuine manufacturer status guarantees original equipment quality
- Maintaining a high-mileage GM vehicle — the modernizing design meets the demands of the modern user
- Professional workshop repairs — the professional-focused design supports heavy-duty usage
What the GM Air Compressor is the wrong choice for
- Universal AC system retrofitting — the vehicle-specific fit type prevents installation on non-GM vehicles
- Aftermarket performance tuning — the professional design focuses on standard reliability rather than high-performance modifications
- Multi-vehicle fleet stocking — the vehicle-specific fit type limits use to a single specific model
What to budget alongside the GM Air Compressor, and what to skip
Worth buying at the same time
- Refrigerant gas — required to charge the system once the compressor is installed
- AC system flush kit — necessary to clean the lines before installing a new high-quality compressor
- Compressor mounting bolts — required to secure the vehicle-specific unit to the engine bay
- Replacement O-rings — necessary to ensure a seal for the new compressor connections
- PAG oil — required to lubricate the internal components of the compressor
What you can skip
- Universal mounting brackets — the vehicle-specific fit type implies the mounting points are already integrated
- Generic adapter plates — the vehicle-specific design eliminates the need for conversion hardware
Where to Buy the GM Air Compressor
These retailers sell Ac Compressor Replacement For Car generally – we do not track which of them has this particular model in stock, so check availability and the current price with the retailer before making a trip.
- RockAuto (online only) — extensive catalog of specialized and budget-friendly parts
- PartsTech (online only) — trade and professional accounts for automotive parts
- AutoZone (online and physical stores) — wide availability of aftermarket brands and in-store pickup
- O’Reilly Auto Parts (online and physical stores) — extensive inventory of replacement parts and local store support
- Advance Auto Parts (online and physical stores) — large selection of cooling and A/C components
- Amazon (online only) — massive variety of third-party and private label brands
Final Verdict on the GM Air Compressor
If you require a vehicle-specific replacement that maintains original equipment standards for a GM application, the GM Genuine Parts 15-20189 Air Conditioning Compressor is the correct choice at approximately $182.99.
The GM Air Compressor ranks well among the options we evaluated due to its 4.1 rating from 442 buyers, confirming its reliability as a high-quality component for this specific fit type.
Skip it if: your vehicle requires a non-GM specific compressor or if you are looking for a universal aftermarket unit with a different mounting bolt pattern.