S.E.S. Light

[Johnblaze]

Hello Trailvoy-I'm a longtime "lurker" and this is my first post. Got an 03 trailblazer LS...flawless performer with about 70k miles. but my SES light shows up weekly-just come on while driving and a day or so later it will go out. It has done this since i got the truck(bought it w/about 25k on the odometer). Are the SES lights just "happy" on our trucks? I have a hard time believing i have a problem with the motor-it hasnt EVER made a funny noise, or hesitate, or anything.

[zamar]

Welcome to the site. You can buy a codereader at Walmart for $68 or have someone at Auto Zone pull your codes for free. I chose to buy one to keep from having to goto AZ (not Arizona :) ) everytime I get a light on any car.

Besides you have to sweet talk the AZ folks to let you clear the light because it against the law for them to do it.

:m2:

[Johnblaze]

Thanks! im gonna grab that code reader-im so paranoid to have some dealer guy touch it and claim my flux capacitor is out and itll take $1,000 or so to fix it, haha

[deathbynosleep]

My SES light used to come on at least once a week over the summer...never got any codes from the diagnostics though. It seems since it got cold out the light hasn't been back on.