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1999 Chevrolet K1500 Suburban 5.7L MIL Lamp on
Posted to GM Driveability on 8/5/2009 11 Replies

HELLO and thanks in advance; this chev is driving me nuts, it has an intermittent rough idle and miss most noticeable usually at start up, code 303 along with a inefficient cat for that side of engine & will set usually after 2-3 days. fuel pressure cks good v...

11 Replies Received (View Replies)

  Related Documents & Media  1999 Chevrolet K1500 Suburban

 
Message Closed w/FIX

car Vehicle Data

1999 Chevrolet K1500 Suburban

VIN 3GNFK16RXX
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

303miss cyl 3
420inefficeint cat
Message Closed w/FIX

car Vehicle Data

1999 Chevrolet K1500 Suburban

VIN 3GNFK16RXX
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

303miss cyl 3
420inefficeint cat