MY 03 TRAILBLAZER HAS TWO DTC'S P0128, AND P0172. I FIGURE 128 IS THE THERMOSTAT, BUT 172 ONLY SAYS BANK 1 TOO RICH. COULD THIS BE THE 02 SENSOR .
Jan 5, 2010 at 10:36 AM
2003 Chevy Trailblazer 2003 TRAILBLAZER DTC TROUBLE CODE P0
DCCPACE
- MEMBER
- 1 POST
reprogramm the ECM with the latest software to correct P0172.there is a software update for this problem.
Jan 6, 2010 at 12:47 AM
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