Swoop is correct as always, haha. MIL/check engine light. The causes can be o2 sensors pre or post, depending on teir 2 3 or 4, it can be the electronic throttle body, the air sensor right below the throttle body on the intake mainfold, if it has the egr it could be that. or of course the ecm itself. This is on several combis with the gm 3.0 engine. They did away with this in the newer models with the lcd display, and they are kobota lpg engines now instead.
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