clemet
TYF Newbie
I have an 03 Tahoe that I am having issues with. I took it to get the transmission rebuilt a few months ago, and it just developed an exhaust leak. Turns out they had used some sort of RTV for the exhaust gasket on the driver manifold. I replaced the gasket, and now it is idling rough. When I pulled to codes today here are the results that I came up with, and cannot make heads or tails of where to start other than checking all the connectors and wiring under hood. It does have a bad smell when it is running almost like the cat may be going bad, but that may also be the PB Blaster I had to use to loosen the exhaust bolts.
3 U1199 Loss of serial communications for class 2 devices
C0300 Rear Speed Sensor Malfunction
C0306 Motor A or B Circuit
C0327 Encoder Circuit Malfunction
C0374 General System Malfunction
C0379 Front Axle System
C0550 ECU Malfunction - internal write / checksum malfunction
B2725 ATC Mode Switch Circuit Malfunction
U1301 Class 2 Short to Battery
P0101 Mass or Volume Air Flow Circuit Range/Performance Problem
2 P0135 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0171 System too Lean (Bank 1)
3 P0300 Random/Multiple Cylinder Misfire Detected
Any help will be greatly appreciated.
3 U1199 Loss of serial communications for class 2 devices
C0300 Rear Speed Sensor Malfunction
C0306 Motor A or B Circuit
C0327 Encoder Circuit Malfunction
C0374 General System Malfunction
C0379 Front Axle System
C0550 ECU Malfunction - internal write / checksum malfunction
B2725 ATC Mode Switch Circuit Malfunction
U1301 Class 2 Short to Battery
P0101 Mass or Volume Air Flow Circuit Range/Performance Problem
2 P0135 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0171 System too Lean (Bank 1)
3 P0300 Random/Multiple Cylinder Misfire Detected
Any help will be greatly appreciated.
