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How do I reset the service engine light on a 2003 Chevy Trailblazer?
Get the Trouble code read then have it reset at the same time. You can also disconnect the negative battery terminal for 10 minutes and it will reset. If you have not fixed the problem the code will set again causing your check engine light to come back on.
A code reader that can plug into car's diag port can reset it, there is no point resetting anyway without repair or it comes back on and could be something serious so find out what the problem is.
disconnect the battery
If you don't have a code reader you can disconnect the battery cable for a couple of minutes and that will reset the light
A code reader that can plug into car's diag port can reset it, there is no point resetting anyway without repair or it comes back on and could be something serious so find out what the problem is.
When you change the battery you automatically reset the PCM. Any time you remove the negative battery cable for about 15-20 minutes you will reset the PCM. This will reset your Check engine light also. www.trailvoy.com Trailblazer enthusiasts forum with all the answers for your Trailblazer.
disconnect the battery for 1 minute and it will reset.
How do you reset the computer in a 04 blazer 4.3L
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I reset the check engine light on my jeep by disconnecting it from the battery.
AnswerIgnition on - engine off - floor the gas pedal 3 times. That's it!