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idler noise
hear rattle noise when accelerating only when ac is on replaced ac belt and idler same result checked pressures when accelerating looks ok. works ok at 60mph and no noise. the noise is coming from idler jumping thanks bob Login to read more. 
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32 Replies Received
| Engine | 5.3 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2003 GMC Yukon XL 1500 SLE 5.3L
| Engine | 5.3 L |
| Trans | 4-speed Automatic (Electronic) |
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