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1999 GMC K1500 Suburban SLE 5.7L Misfire, MIL Lamp on
Posted to GM Driveability on 2/6/2013 36 Replies

hello im matt from daves downtown conoco i am 19 years old and this is the first time were using iatn. yesterday this suburban came in with a misfire. first thing i checked the scanner for codes and just said po300 for the misfire so i went into data and seen ...

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  Related Documents & Media  1999 GMC K1500 Suburban SLE

 
Message Closed w/FIX

car Vehicle Data

1999 GMC K1500 Suburban SLE

VIN 1GKFK16R5X
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursAlways

Trouble Codes

P0135Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction
P0141Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction
P0300Multiple Misfire Detected
P0430Catalyst Efficiency Below Threshold (Bank 2)
Message Closed w/FIX

car Vehicle Data

1999 GMC K1500 Suburban SLE

VIN 1GKFK16R5X
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursAlways

Trouble Codes

P0135Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction
P0141Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction
P0300Multiple Misfire Detected
P0430Catalyst Efficiency Below Threshold (Bank 2)