× 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
Re: 1988 C1500 5.7 code 43
Posted to Technical Discussion Forum on 1/24/2002

Snip

[...trimmed text...]

ECM pin B7 (dark green wire from the knock sensor module pin C) is the voltage signal from the knock sensor module to the computer. No detonation should have 9.5 to 10.5 volts. Detonation, (kno... Login to read more.