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The OBDII connector is on the drivers side or midline of the truck near where the steering column meets the dash. You plug it in, turn the scanner on, then wait for it to communicate with the truck. If you need help with the codes visit our enthusiasts forum!
www.trailvoy.com Trailblazer Enthusiasts forum run by enthusiasts!
What else can I help you with?
How do you check engine codes on a 2003 Chevy 2500HD without scanner?
You can't, you must use a scanner.
What type of oil do you use for a Chevy Trailblazer 2003?
You can use either 5W30 or 10W30...doesn't matter
How do you reset limp home mode on a 2006 Chevy Trailblazer?
1st repair the problem 2nd Use the scanner to clear the codes set in the computer system
How do you use the word Chevy Trailblazer in a sentence?
Daniel Boone was a famous American trailblazer.
What type of gasoline does a 2005 Chevy Trailblazer use?
Regular
What kind of freon does a 2003 trailblazer use?
R134a
Can a Purolator L25288 oil filter fit a Chevy Trailblazer 2002?
I use it on my 06 trailblazer I6 4.2
How do you use a slim Jim on a 93 Chevy Trailblazer?
There is no 93 trailblazer... some car thief you'd make..
What kind of transmission fluid does a 2002 Chevy Trailblazer use?
Dextron III
What lubricant should you use on the rear hatch release button on a Chevy Trailblazer?
a condom
What weight oil do i use for a 2003 Trailblazer?
As listed in the manual 5w-30.
What type of coolant does a 2002 Chevy Trailblazer use?
Dexcool and only Dexcool. It is an all aluminum engine.
