Hi. My service engine soon light just came on in my 99 Blazer after a short trip on the highway. It runs fine...no change in performance at all. It's got 80k miles on it.
Probably no way to read codes witout a scanner right? Any ideas?
Thanks.

 

Drive down to your local Advanced Auto or Autozone and have them read the codes for you.

 

That is probably what I will do. Do they mind doing it if you don't buy the parts?
I still might want to own a scanner.

 

Scanners are definitely nice to have. I own an AutoTap. Definitely a good tool to have in the garage when working on newer (96+) vehicles. My Autotap lets me view/record sensor data as well as read/clear codes.

 

I have the same problem did you get anyone to scan the code? Im curious if you got anywhere.

 

let me tell ya something....DON'T ever lose your gascap...its sets off the SES i never got around to getting a gascap bc i was in college and i had to end up goin to get it scanned and i felt like a total *** bc i never thought that would set it off. o well its all set now. good luck, hopefully its nothing to expensive

 

I have even seen over filled gas tanks cause SES lights as well as under tightened gas caps. I always fill up until it clicks itself off and that is it. Also, when I tighten down the gas cap, I make sure that it clicks atleast 3 times.

Have you gotten your codes read yet?