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Username Post: 88 K3500 7.4L no knock sensor, no ESC Module
"5th Year" Gold Supporting Member
Posts: 705
Loc: Canada
Reg: 11-01-04
02-20-12 12:11 AM - Post#2192785    
    In response to LaMort

Have you verified that you have a 1227747 ECM?

If you provide the PROM code I can use TunerCat to get some details as to what applications the PROM was used for.

Also, make sure the PROM number on the ECM sticker is the same as the one on the actual chip.
-91 Sierra C2500, now K2500
-81 Chev K20

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