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OBD2 won’t connect to ecu
Trying to read sensor data from 2000 c3500 5.7. Diagnostic port has power and can read codes only from an AutoZone reader. Service manual says test for continuity for purple wire going to pcm from obd2 port. And says to replace the entire pom if there is continuity, confirming that there are...- JBis
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- Replies: 15
- Forum: Audio + Electronics
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5.7 Vortec Hard start when warm
2000 c3500 5.7 vortec. All items replaced so far are gm genuine or delco. ICM, coil, cap, rotor, fuel pressure regulator, oil sending unit (one wire type), crank position sensor, temp sens Truck came with updated injectors. Code reader says cannot connect to ecu, but has power. So is there a...- JBis
- Thread
- Replies: 4
- Forum: Engine Performance + Maintenance
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