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You need an OBDII scanner tool. You can visit autozone and they will scan it for you for free but usually won't reset the light because they want to sell you the part that would shut off the light. It's most likely that it's the O2 sensor behind the catalytic converter. But it's worth the trouble to find out first. Harbor Freight tools has a scanner for about thirty dollars. A quality Actron scanner will run you about 80 but it's worth the extra money.
What else can I help you with?
Why is the Service engine light is on for a 99 Chevy blazer?
Maybe you should service the engine soon. :P
Why is the service engine light on your 1991 S10 Chevy blazer?
time for an oil change
How do you reset check engine light for the 2009 Chevy trail blazer?
How do you reset check engine light for the 2009 Chevy trail blazer?
How do you reset service engine soon light for a 2001 Chevy blazer?
unhook battery or scan tool will do it
Why does the service engine soon light come on 2000 Chevy blazer ls 4wd?
I had my 200 blazer scanned an was told it was a bad fuel tank cap. I replaced it and the light is still on.
Why is your service engine soon light on in your Chevy blazer 95?
There is a problem with the emmission system are transmission and the computer turns the engine light on to let you know there's a problem. Have engine scanned with a OBDII engine scanner.
How to reset service engine soon light for a 2000 Chevy blazer?
Discconect the negative cable from the battery for a few minutes and that should do the trick
Why is engine light is on 97 Chevy Blazer?
To tell you to read the diagnostic codes.
How do you reset service engine soon light on 2003 Chevy trailblazer?
How do I reset the service engine light on a 2003 Chevy Trailblazer?
What is check engine light po300 mean for a Chevy blazer?
Random cylinder misfire
In a 1997 Chevy S10 Blazer if the Service Engine light is coming on and nothing wrong can be found and no bad connection what can be done to fix it?
i would check to see if the o2 sensors have gone bad they will throw you a check engine light when they go out I have the same problem. It is the transmission. I have a 1999 Chevy Blazer and shortly after the Service Engine Soon light came on, my transmission started "slipping" between 1st and 2nd on an automatic. This only happens when the car gets warm on trips longer then about 15 miles.
Will a faulty oxygen sensor cause your engine light to come on in a 1996 Chevy blazer?
Yes
