How do I reset the service engine light on a 2003 Chevy Trailblazer?
disconnect the battery for 1 minute and it will reset.
I was told by a co-woker that if you disconnect the negative battery cable for about 20 minutes or so that will reset the service engine light.
That requires an OBDII engine scanner.
reset service engine light
disconnect the battery for a few minutes
disconnect the battery for 30 seconds
unhook battery or scan tool will do it
unhook the positive on the battery for 5 min. This should reset your check engine light if it doesnt then you still have issues.
How do you reset check engine light for the 2009 Chevy trail blazer?
A reset Engine Service Light comes on when an issue comes up with in the engine. This light can be reset by a tech or by fixing the problem.