My humer h3 is having a power reduced and traction failed signal what does it mean?
Check the wires crossing the valve cover about midway ,under the crossover air pipe,,,especially if the plastic wire looms are deteriating ,,think the wires go to the egr not sure,,,check the wires for rub marks if any repair,,if the wire or wires are bad it will throw al kinds of crazy codes, delete codes see if it fixed it,,,also vacuum leaks will cause this issue to,,cracked rubber connectors and such
see YouTube vid. H3 hummer reduced power fix
taterhead3e
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