Turn on you ignition without starting the engine. Press on the gas pedal 3 times, all the way down. NOT TOO FAST OR TOO SLOW. The light should then go off.
From the 2002 Trailblazer owner's manual:
If your Trailblazer/Envoy is equipped with the Driver Information Center at the bottom of the instrument cluster:
1) Change your oil filter and oil.
2) Turn on your ignition without starting the engine.
3) Navigate to the oil life 0% display using the fuel info button (gas pump icon).
4) Push / hold the select button (arrow icon) until it resets back to oil life 100% (+/-10 seconds)
5) Take a test drive and drop off your used oil at a recycling station...
How do you change the spark plugs on a 2002 chavy trailblazer
Yes, after changing the oil the system will need a quick reset to get the light warning to go off. To reset turn the key to the run position (do not start) next fully press and release the gas pedal 3 times in 5 seconds and finally start the engine and verify that the light went out.
check wiring harness also check for any possable leakage
Refer to owners manual
ignition on - engine off - floor the gas pedal 3 times. That's it! LOOK IN YOUR OWNERS MANUAL!
Insert key in the ignition, then turn the key to on position without cranking, then push gas peddle three times within 5 seconds.
You must have the special needed tool to reset the oil indicator light.
you cant change the front shocks on the trailblazer without a spring compressor because on a trailblazer they all have struts and they have to be compressed down
see "how too replace water pump on 2002 Trailblazer"
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.
vice & oil reset 2002 sl500
On my 2002 Bravada open hood and there are 2 clips that have to be lifted and entire headlight assembly pulls out allowing acces to bulbs-perhaps the same with yours