× 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 Chevrolet Astro CL 4.3L Surge
Posted to GM Driveability on 1/28/2003 5 Replies

I am using a Genisys scan tool to scan the sensors and data. And the reading for the knock sensors always reads "invalid". There is a Yes or No indicator for knock detection, but neither ever light up. It just says invalid. The sensor, wiring harness, & PCM se...

5 Replies Received (View Replies)

  Related Documents & Media  1993 Chevrolet Astro CL

 
Message Closed w/FIX

car Vehicle Data

1993 Chevrolet Astro CL

VIN 1GNEL19W6P
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
SymptomsSurge
OccursAlways
Message Closed w/FIX

car Vehicle Data

1993 Chevrolet Astro CL

VIN 1GNEL19W6P
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
SymptomsSurge
OccursAlways