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TrailBlazer2002-2009
2023-
The TrailBlazer, originally introduced as an upscale Blazer, was produced from 2002 to 2008 with a powerful I6 engine and with a monster V8 offered in the Trailblazer SS
Platform: GMT 305, 360, & 370.
Changed the evap purge control. Still have error. Is there a vacuum line that usually leaks? This might be a trial and error situation. Any help is appreciated.
P0440 MAYBE P0044 ISN'T A CODE
if you have a p0440...make sure the cannister vent valve can close. a good scan tool can cycle it open and closed. when cycled you should hear it click.