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03 Trailblazer electro-viscous cooling fan
Does anyone have a wave form of a know good speed sensor on a GM E.V. cooling fan? Im trying to prove my 8 month old cooling fan has got a bad speed sensor inside and was not able to find one in the waveform library Login to read more. 
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| Engine | 4.2 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2003 Chevrolet Trailblazer LS 4.2L
| Engine | 4.2 L |
| Trans | 4-speed Automatic (Electronic) |
Video