Lock the truck with remote then unlock truck manually with key
How do I reset the service engine light on a 2003 Chevy Trailblazer?
disconnect the battery
You can reset the 2002 Chevrolet blazer security system by removing the security system fuse. Keep the fuse out for 10 seconds and replace it to its original slot.
How do you reset the computer in a 04 blazer 4.3L
You don't. You douse it with gasoline and throw a match on it.
The best and fastest way to reset the instrument panel of 2004 Trailblazer is to disconnect both battery terminals. Reconnect them after about 30 minutes and everything should be reset.
The security light on a 2001 Chevy Astro Van can be reset by disconnecting the battery for 30 seconds. This resets the system and turns out the light until another problem is detected.
1st repair the problem 2nd Use the scanner to clear the codes set in the computer system
To reset the service engine light on a 2003 Chevy Trailblazer, you can use an OBD-II scanner to clear the trouble codes. Alternatively, you can disconnect the negative battery cable for about 15 minutes to reset the system. After reconnecting, ensure that the light is off; however, if it reappears, it indicates an underlying issue that needs addressing. Always consult a mechanic if you're unsure about the cause of the light.
When you change the battery you automatically reset the PCM. Any time you remove the negative battery cable for about 15-20 minutes you will reset the PCM. This will reset your Check engine light also. www.trailvoy.com Trailblazer enthusiasts forum with all the answers for your Trailblazer.
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