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On average, the cost for a GMC Sierra 3500 Classic Car AC Compressor Relay Replacement is $131 with $36 for parts and $95 for labor. Prices may vary depending on your location.
| Car | Service | Estimate | Shop/Dealer Price |
|---|---|---|---|
| 2007 GMC Sierra 3500 ClassicV8-6.0L | Service typeCar AC Compressor Relay Replacement | Estimate$187.91 | Shop/Dealer Price$216.14 - $278.33 |
| 2007 GMC Sierra 3500 ClassicV8-8.1L | Service typeCar AC Compressor Relay Replacement | Estimate$167.91 | Shop/Dealer Price$196.16 - $258.36 |
| 2007 GMC Sierra 3500 ClassicV8-6.6L Turbo Diesel | Service typeCar AC Compressor Relay Replacement | Estimate$167.91 | Shop/Dealer Price$196.16 - $258.36 |
In order to operate, your air conditioning system needs to compress refrigerant to pressurize it. The compressor is both electronic and belt-driven. The AC compressor relay controls the supply of electricity.
The AC compressor relay acts as a control, turning the compressor on and off when necessary. It may be located close to the compressor (under the battery tray, for instance), but it may also be located in the under-hood fuse box, or somewhere else depending on the make and model in question. However, like all other relays, this one is subject to wear and tear, and eventual failure over time.
The AC compressor relay is an integral part of the system. Without an operable relay, electricity cannot be sent to the compressor, and it will not function despite having a good belt, good clutch and other components. If your compressor does not function, have one of our expert mechanics diagnose the system and replace the AC compressor relay if required.
Having a functional AC compressor relay is essential to air conditioner operation. While the blower motor will still circulate air in the cabin, that air will not be cold because the compressor isn’t pressurizing refrigerant. This isn’t critical for vehicle operation, but it does affect driver and passenger comfort and the ability to clear foggy windows. If the AC compressor relay has been diagnosed as faulty, have it replaced as soon as you can.
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