where is the wire for the knock sensor routed to or at ona 1990 C3500 Chevy dually


Asked by Nov 15, 2014 at 04:24 PM about the 1990 Chevrolet C/K 3500 Ext. Cab 2WD

Question type: Maintenance & Repair

I have 1990 C3500 Chevy 454 TBI That I purchased used, I have done some repairs to it and all is well runs great but the engine  light keeps coming on, I checked it with a OBD and it gives the code for the knock sensor which I have purchased along with the wire connector but I cant locate the original connector wire the trace in the repair manual said it goes to B15 on the ECM but that is on the 1994 model not the 1990?? are they the same? I don't want to fry the system

1 Answer


I just found this site loads of info, my trucks knock sensor hooks to the spark control mod check the site out CHEVYTHUNDER.COM

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Chevrolet C/K 3500 Questions

Chevrolet C/K 3500 Experts

#1 cooldad47
Reputation 180
#2 tennisshoes
Reputation 100
#3 Dieselman1990
Reputation 90
View All

Related Models For Sale

Used Chevrolet C/K 2500"
283 listings starting at $1,995
Used GMC Sierra 3500"
8 Great Deals out of 299 listings starting at $5,495
Used Chevrolet C/K 1500"
1,148 listings starting at $2,400
Used Ford F-350"
373 listings