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2001 Chevrolet Suburban 1500 5.3L Catalyst monitor
Posted to GM Driveability on 3/13/2014 13 Replies

Hi guys

i replaced catalytic convertors due to code po420, i have driven car probably 50 miles still won't run catalyst monitor. Alldata says to drive car at 55mph for 5 minutes, then decelerate to zero miles per hour without touching the brake. This is very ...

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  Related Documents & Media  2001 Chevrolet Suburban 1500

 
Message Closed w/Summary

car Vehicle Data

2001 Chevrolet Suburban 1500

VIN 3GNFK16T81
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsCatalyst Monitor
OccursWon't Run Monitor

Trouble Codes

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

car Vehicle Data

2001 Chevrolet Suburban 1500

VIN 3GNFK16T81
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsCatalyst Monitor
OccursWon't Run Monitor

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)