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You are watching: 2004 chevy trailblazer service engine soon light reset

Does anyone know how to reset a service engine soon light on a 2004 gmc envoy. I have done it once before. I think I removed the PCM fuses under the hood, but I cannot remember how to do it and cannot find it anywhere on here. I recently replace my water pump, thermostat, and radiator caps. I want to see if the light goes off. Any ideas? I do not have a code reader and auto zone does not reset them anymore.

Try disconnecting the battery for 5 min. That should clear the computer of any codes. If your light is still on then the problem is most likely still there.Sent from Free App

Or try fuses #10 & 28 in the underhood fuse box, these will not cause possible problems with the HVAC actuators.
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