Question about 2007 GMC Envoy Denali
Posted by Anonymous on
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Posted on Jan 02, 2017
This is a safety feature that the vehicle brings. You need to reset the E.C.U on dealership or it will keep doing it to you. It was probably caused by one single time that you did not closed the fuel cap correctly. Good luck
Posted on Dec 29, 2009
A "V" configuration engine, (8 or 6), uses two upper oxygen sensors and either 1 or 2 lower oxygen sensors.
If the vehicle has dual exhaust; dual all the way from the front to the end of the tailpipe, the vehicle will also have two LOWER sensors. But if the two exhaust manifolds converge into one tailpipe, you likely only have 1 lower oxygen sensor.
Check the electrical connections on the new oxygen sensors, and make certain that you have replaced your old sensors with the right type.
Posted on Aug 30, 2010
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
Does the light ever come on while you are driving the vehicle? It is possible that the vehicle does not trigger the code on the key cycle when vehicle is connected to the OBDII scan tool (a cycle is the time from when a vehicle is started to the time the vehicle is turned off) you should however most of the time be able to check a vehicles trouble code history to see what may be turning the light on
Posted on Mar 22, 2011
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