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#1 |
Member
Join Date: Nov 2002
Location: Potomac,IL
Posts: 250
Likes: 1
Liked 40 Times in 11 Posts
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I have a 2001 GMC 2500 HD, the ECM isn’t sending a pulse signal to the #4 injector. So I need to purchase a new ECM I am assuming. Anyone have experience upgrading the ECM on these 8.1 chevys for more performance for towing?
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Monte Howard 3209 STK, 3208 SS |
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#2 |
Junior Member
Join Date: Jan 2022
Posts: 9
Likes: 13
Liked 22 Times in 6 Posts
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You should check for continuity between the injector plug in and the corresponding pins on the ecm plug in to make sure there isn't a break in the wiring somewhere. Hate to put in a new computer and it does the same thing. Have seen a broken wire or a mouse damaged one before.
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