
2001 GMC Savana 2500 5.7L MIL Lamp on, no communication
tech 2 will communicate with factory pcm but will not with alternate fuel module only runs on gasoline checked wiring from alt module to factory pcm no problems found service engine light flickers and so does fuel switchover disconecting alt module ses light s...
FIX posted 3/15/2011
![]()
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)1 Replies Received(Hide Replies)1 Replies Received
|
Message Closed w/FIX
|
VIN | 1GTGG25R81 |
Engine | 5.7 L / 8 cyl / BI-FUEL |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection / sefi bi fuel |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp on, No Communication |
Occurs | Always |
Message Closed w/FIX
Vehicle Data
2001 GMC Savana 2500
VIN | 1GTGG25R81 |
Engine | 5.7 L / 8 cyl / BI-FUEL |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection / sefi bi fuel |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp on, No Communication |
Occurs | Always |