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Check engine light
Posted to Emissions Forum on 11/7/2019 8 Replies

Hello everyone, The Hummer comes into the shop. Failed smog due to the SES light not illuminating. I found high resistance in the MIL control circuit from the ecm to the ipc. circuit 419. Using a scan tool the light does NOT come on. Testing the circuit at the... Login to read more.

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car Vehicle Data

2002 Hummer H1 6.5L

Engine6.5 L
Trans4-speed Automatic (Electronic)

car Vehicle Data

2002 Hummer H1 6.5L

Engine6.5 L
Trans4-speed Automatic (Electronic)