
2003 Chevrolet Silverado 1500 5.3L Hesitation, Misfire, MIL Lamp on
This vehicle came in 3 months ago with a po300 and 420 code. We replaced the plugs and wires. Did an injector service. We also installed a new converter assembly. We checked the misfire monitor on the scantool and all looked well. Recently the customer came ba...
FIX posted 5/6/2008
![]()
iATN Members:
Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle (View Replies)11 Replies Received(Hide Replies)11 Replies Received
|
Message Closed w/FIX
|
VIN | 2GCEK19T63 |
Engine | 5.3 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / fi |
Emissions | OBD-II Compliant |
Symptoms | Hesitation, Misfire, MIL Lamp On |
Occurs | Always |
Misc. | Z71 |
Trouble Codes
P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/FIX
Vehicle Data
2003 Chevrolet Silverado 1500
VIN | 2GCEK19T63 |
Engine | 5.3 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / fi |
Emissions | OBD-II Compliant |
Symptoms | Hesitation, Misfire, MIL Lamp On |
Occurs | Always |
Misc. | Z71 |
Trouble Codes
P0420 | Catalyst Efficiency Below Threshold (Bank 1) |