Loss of Power, TPS Code and O@ sensor reads Bank 1 sensor 2

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Mvenglar

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I am working on a 2003 GMC Sierra 2550 HD 6.0L and it is having loss of power. It comes up with a TPS code, and a O2sensor code of Bank 1 Sensor 2. If anyone has ideas out there, I would greatly appreciate it.
 
Mvenglar said:
I am working on a 2003 GMC Sierra 2550 HD 6.0L and it is having loss of power. It comes up with a TPS code, and a O2sensor code of Bank 1 Sensor 2. If anyone has ideas out there, I would greatly appreciate it.
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Your O2 sensor on your exhaust after the pre catalytic converter needs to be addressed and your TPS (throttle position sensor is faulty) is causing you to have the power lost. You going to need a tech2 scanner to determine if it's the TPS or the accelerator peddle that has gone bad.

Good luck and keep me posted. :eek:
 
I had a similar problem with my sierra. When I took off from a stop after just starting my truck, It would bog down and sputter and then when I wanted to open it up going up hill, it had no power and my engine light would come on. So I changed my MASS AIR FLOW SENSOR and it eliminated all problems. 80$ at advance. Trucks got balls all around and no problems anymore.
 
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