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GM PCM driven fuel guage wave form
The Fuel Guage needle is vibrating rapidly on this van, it is doing it even when driven with a Verus. Voltage is rock solid yet I see this on a scope. [2001 Chevrolet Express 2500 , ECM/Inputs/Outputs Waveform] There is a 20+ volt spike when the pcm pulls the ... Login to read more.
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| Engine | 5.7 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2001 Chevrolet Express 2500 5.7L
| Engine | 5.7 L |
| Trans | 4-speed Automatic (Electronic) |
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