Questions & Answers for: GMC Sierra 1500 02 sensors

...02 sensors are seeing a lean condition and likely its the mass air flow sensor or the intake hose to the engine is loose or cut. contact me if you need more information please ...

...02 Sensor Circuit Low Voltage (Bank I Sensor 2) http://www.obd-codes.com/trouble_codes/ There is something that could be making the air and fuel mixture incorrect causing these codes. It don't ...

...2 TIMES, I HAVE AN 05 GMC SIERRA 1500 2WD. CHECK ENGINE LIGHT IS ON, GOT CODES P0157 (TWO TIMES) 02 SENSOR CIRCUIT LOW VOLTS (BANK 2 SENSOR 2). AND ALSO I GOT P2A04, 02 BANK 2 SENSOR ...

...02 sensors. The code tells you which one. There in the exhaust system. If the code refers to the heater part then replace it. If its a lean or rich code then someone will need to diagnose this before ...

...02 sensor with low voltage. I have already replaced all the sensors and catylact converters. And still the light comes on. Did you check the wiring connections for corrosion? Clean them up with some ...

...it po171--if so also check for vacuum leaks in hoses, even a intake manifold leak. just because a 02 sensor comes up it does not mean it is a sensor. a lot of times it is caused buy a exhaust leak ...

...1 system too lean changed plugs fuel filter cleaned maf sensor swapped bank1 and bank 2 upstream 02 sensor to c if code red diff but it didnt and sprayed carb cleaner all over intake manifold ...

where is the 02 sensor located on an 1998 gmc vortec 6 cylinder? On most of the GMC vehicles there is one located in the exhaust system before the catalytic converter and one after the catalytic ...

i have a rough idle & it stalls at stops, otherwise runs fine, could it be the 02 sensor or throttle position sensor? it is either the throttle position sensor or the idle air control valve

2016 GMC Sierra 1500 pick up truck. How to replace an 02 oxygen sensor on it please? You actually have 4 of them, an upstream and a downstream on each bank of cylinders. You only replace the one that ...