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Current PCM calibration not listed, how to procede?
I have this 04 Envoy 4.2L that has an idle problem. I cleaned the throttle body (it was as bad as I have seen on throttle by wire vehicle), it still doesn't idle quite right. I seem to have too much idle when coasting down from around 30 MPH. It may relearn w... Login to read more. 
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| Engine | 4.2 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2004 GMC Envoy XUV SLE 4.2L
| Engine | 4.2 L |
| Trans | 4-speed Automatic (Electronic) |
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