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2001 GMC Sierra 1500 SL, BATT/Charging/Starting Waveform
CH A batt volts cranking at 11.4v to 14.6v running, CH B alt control brown wire at 1.4v cranking, to 11.5v running, CH C initial starter amps at over 600A, once the engine starts, the alt puts out 100A for 200ms, CH D alt control yel wire with a Frequency chan...
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| Engine | 4.8 L / 8 cyl / GAS |
| Trans | 4-speed AutomaticTransmission (Electronic) |
| Delivery | Fuel Injection |
| Subsystem | BATT/Charging/Starting |
| Component | |
| Condition | Known Good |
Vehicle Data
2001 GMC Sierra 1500 SL 4.8L
| Engine | 4.8 L / 8 cyl / GAS |
| Trans | 4-speed AutomaticTransmission (Electronic) |
| Delivery | Fuel Injection |
| Subsystem | BATT/Charging/Starting |
| Component | |
| Condition | Known Good |
Video