Question about 2005 GMC Canyon
What does the code 172 mean for a 2005 GMC Canyon 3.5 engine? I've had the fuel injector, fuel pump, seat valve, and alternator replaced in a year. It has only 32,000 miles.
Interior lights stays on
Posted on Aug 23, 2010
It means that your fuel is running too rich,and needs more oxygen for a cleaner burn. i think that your oxygen sesor may be faulty,but have autozone run the trouble codes for you,and see what exact part is bad.
Posted on May 02, 2010
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Posted on Jan 02, 2017
Code P0128 indicates a faulty thermostat, more than likely it is always in the open position causing the coolant to come up to operating temperature too slowly.
My suggestion is to find a different repair shop.
Posted on Nov 24, 2010
It said you rebuilt the TBI but did you replace the Fuel Pressure Regulator? I had the same problem with fuel pressure bleeding off in about 5 seconds. I replaced the regulator and it holds pressure again now.
Posted on Mar 09, 2013
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