Do you know a part number for a serpentine belt to bypass the A/C compressor?

Tiny
XICBOI
  • MEMBER
  • 2012 CHEVROLET TAHOE
  • 5.3L
  • V8
  • 4WD
  • 180,000 MILES
A/C clutch just started making noise. I'd like to have a belt to bypass it. In case it seizes and breaks my original.
Thursday, July 24th, 2025 AT 4:22 AM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 15,233 POSTS
Shouldn't need one, the A/C compressor on that truck should have its own stretch type belt as shown in the image. 1 is the main drive belt and the AC belt is behind it. That belt gets cut to remove it and the new one comes with an installation tool.
If you are sure, it's the clutch, you can replace just the clutch and bearing easily on that compressor. Part # 20906283 is the clutch coil, hub and pulley with bearing. There are aftermarket versions and as yours just started making noise it's a good time to replace it, if the bearing seizes it can spin on the nose of the compressor and then you have to replace it as well. Replacement is simple though, Remove the center bolt and slide the center hub off the shaft, catch any shims you will need them. Then remove the wavy snap ring and then the pulley and bearing will slide off. Now if you want disconnect the coil and remove the snap ring and slide the coil off. Flush and corrosion off and reverse the process to install the new parts. Then adjust the clutch hub air gap using the shims that go on in the hub, you want a gap between, .014" and.026". I try to get closer to the low side to minimize wear on the face. Then tighten the bolt to 13 lb ft. Much easier than needing to replace the entire compressor and deal with the refrigerant.
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Thursday, July 24th, 2025 AT 7:09 AM

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