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2002 GMC Envoy SLT, ECM/Inputs/Outputs Waveform
The #4 red trace is the ckp, #3 green trace is the cmp, #2 blue trace is #1 coil trigger, #1 yellow trace is TDC compression, The ckp trace does not line up with the other traces showing timing isssues
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| Engine | 4.2 L / 6 cyl / GAS |
| Trans | 4-speed AutomaticTransmission (Electronic) |
| Delivery | Fuel Injection |
| Subsystem | ECM/Inputs/Outputs |
| Component | , |
| Condition | Known Good |
Vehicle Data
2002 GMC Envoy SLT 4.2L
| Engine | 4.2 L / 6 cyl / GAS |
| Trans | 4-speed AutomaticTransmission (Electronic) |
| Delivery | Fuel Injection |
| Subsystem | ECM/Inputs/Outputs |
| Component | , |
| Condition | Known Good |
Video