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2001 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on
Posted to GM Driveability on 2/8/2006 10 Replies

Truck came in with code P0140 changed b1s2 o2 sensor. came back soon after with codes as above. Checked cat converter for pluged Clean and Clear, could not find vacuum leak at intake with carb clean. Plugs all look good. Missfire monitor 1,3,5,7. Sometimes idl...

10 Replies Received (View Replies)

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Message Closed w/FIX

car Vehicle Data

2001 Chevrolet Silverado 1500

VIN 1GCEK14T81
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, Misfire, MIL Lamp On
OccursCold, Hot, Cruise, Idle, After a Hot Soak, Intermittently

Trouble Codes

P0131Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage
P0140Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity Detected
P0151Heated Oxygen Sensor (Bank 2 Sensor 1) Circuit Low Voltage
P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2001 Chevrolet Silverado 1500

VIN 1GCEK14T81
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, Misfire, MIL Lamp On
OccursCold, Hot, Cruise, Idle, After a Hot Soak, Intermittently

Trouble Codes

P0131Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage
P0140Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity Detected
P0151Heated Oxygen Sensor (Bank 2 Sensor 1) Circuit Low Voltage
P0300Multiple Misfire Detected