2003 GMC Sierra Repair Question
Topics covered: Sensor, Engine, Thermostat.
Mileage: 185,000 miles.
Mileage: 185,000 miles.
Asked on January 1, 2013
GMC Sierra Sensor Problem
Engine started running rough/stalling, got a diagnostic code of MAF, and then thermostat/sensor, and the O2 sensor bank 1.i replaced all 3 of these items but engine is still running rough.
Asked by rogerballesterosAnswer
Replied on January 1, 2013
what were the codes???
codes never identify bad parts, just failed systems.
lets start with the code numbers
Roy
Replied on January 3, 2013
This is how the codes came up.
P0128- Coolant Temp below Thermostat
P0101- mass air flow range
P0420- below threshold- bank 1
replaced
MAF
Distributor
O2 Sensor bank 1
thermostat/sensor
cleared codes- engine stalled again while idling