× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
1999 Chevrolet Silverado 1500 4.3L Misfire, MIL Lamp on
Posted to GM Driveability on 3/18/2008 9 Replies

Greetings Hate to have a ask questions sometimes. Just cant quite wrap my brain around this one, when the pcv valve is installed in the valve cover, the ecm records misfires on cyl #1. When you remove the pcv from the valve cover the misfire counter stops. I h...

9 Replies Received (View Replies)

  Related Documents & Media  1999 Chevrolet Silverado 1500

 
Message Closed w/Summary

car Vehicle Data

1999 Chevrolet Silverado 1500

VIN 1GCEC14W2X
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / cpi
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursHot, Idle

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/Summary

car Vehicle Data

1999 Chevrolet Silverado 1500

VIN 1GCEC14W2X
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / cpi
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursHot, Idle

Trouble Codes

P0300Multiple Misfire Detected