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2000 Chevrolet Silverado 1500 5.3L MIL Lamp on
Posted to GM Driveability on 1/6/2004 16 Replies

bank one sensor #2 moving from 775mv. to 100mv. put new 02 in same results. fresh tune up and injector cleaning . bank 2 sensor 2 stays at about 750mv.

16 Replies Received (View Replies)

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Message Closed w/FIX

car Vehicle Data

2000 Chevrolet Silverado 1500

VIN 1GCEC19T7X
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / vortex
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIdle, MIL. Comes on at Idle

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)
Message Closed w/FIX

car Vehicle Data

2000 Chevrolet Silverado 1500

VIN 1GCEC19T7X
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / vortex
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIdle, MIL. Comes on at Idle

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)