× 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
1993 GMC C3500 Sierra SLE 7.4L MIL Lamp on
Posted to GM Driveability on 9/27/2007 10 Replies

This veh has a check eng light on. Genysis idicates code 43 knock sensor failure. I have checked resistance in all the associated wiring. The scan tool indicates no for knock present while running and yes when I tap on block so It seems to be working yet the l...

10 Replies Received (View Replies)

  Related Documents & Media  1993 GMC C3500 Sierra SLE

 
Message Closed w/FIX

car Vehicle Data

1993 GMC C3500 Sierra SLE

VIN 2GTHC39N3P
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / TBI
EmissionsUS Fed
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

43Knock sensor Failure
Message Closed w/FIX

car Vehicle Data

1993 GMC C3500 Sierra SLE

VIN 2GTHC39N3P
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / TBI
EmissionsUS Fed
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

43Knock sensor Failure