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GM 12669569 Accessory Drive Belt Idler Pulley
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| Pulley Type | Smooth Idler |
|---|---|
| Belt Type | Serpentine (V-Ribbed) |
| Material | Steel |
| Bearing Type | Sealed Ball Bearing |
| Outer Diameter | 90.2 mm (3.55 in) |
| Height | 64.8 mm (2.55 in) |
| Mounting Hole Diameter | 10.35 mm (0.41 in) |
| Finish | Black |
| Net Weight | 1.87 kg |
| Package Dimensions | 12 × 12 × 8 cm |
Manufacturer No.
- 12669569
- 36299
- 12555609
- 12580771
OEM Part No.
- 12669569
Engine Part No.
- GM LC9 5.3L V8
- GM LM7 5.3L V8
- GM LMG 5.3L V8
- GM LR4 4.8L V8
- GM LQ4 6.0L V8
- GM LQ9 6.0L V8
- GM LS2 6.0L V8
- GM LS3 6.2L V8
- GM L92 6.2L V8
Interchange No.
- 36299
- T36299
- 54-2101
- 0187-2UZFE
- RC31740005
Fitment Vehicles
- Chevrolet Silverado 1500
- Chevrolet Silverado 2500 HD
- Chevrolet Silverado 3500 HD
- Chevrolet Tahoe
- Chevrolet Suburban
- Chevrolet Avalanche
- Chevrolet Express 2500
- Chevrolet Express 3500
- Chevrolet Camaro
- Chevrolet Corvette
- Chevrolet Colorado
- GMC Sierra 1500
- GMC Sierra 2500 HD
- GMC Sierra 3500 HD
- GMC Yukon
- GMC Yukon XL
- GMC Savana 2500
- GMC Savana 3500
- Cadillac Escalade
- Cadillac Escalade ESV
- Cadillac CTS-V
- Buick Rainier
- Hummer H2
- Hummer H3
- Hummer H3T
- Saab 9-7x
- Isuzu Ascender
The GM 12669569 accessory drive belt idler pulley is a genuine OEM component designed for the accessory drive system on General Motors Gen III and Gen IV small block V8 engines. It utilizes a smooth steel pulley surface with a sealed ball bearing to maintain belt tension and alignment for the serpentine belt driving alternator, water pump, and power steering pump.
This pulley assembly replaces superseded part numbers 12555609 and 12580771. It is engineered to meet GM specifications for fit, form, and function, ensuring reliable operation under high thermal and mechanical loads typical in full-size truck and SUV duty cycles. Cross-references include ACDelco 36299, Gates 36299, and Maxgear 54-2101.
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