LS Swapped No Communication With ECM
- Thread starter JSTEWY
- Start date
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dougbert
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- 5535 feet in Utah Mountains
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- Truck Year
- 1984
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- K1500/nv4500/np241c/33x12.50x16/4.10 Gears 14BFF
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- 5.3L - 2002 Silverado, rebuilt top end, long tube headers
is this IN the vehicle?
if so, you might make a separate harness for desktop programming, or use it for more reference
http://www.gmtruckcentral.com/articles/2014/Bench-harness/bench-harness.html
Next try another ECU
if so, you might make a separate harness for desktop programming, or use it for more reference
http://www.gmtruckcentral.com/articles/2014/Bench-harness/bench-harness.html
Next try another ECU
marks86
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- 1986
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- K30
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- 12v Cummins
Vats been removed?
yevgenievich
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It needs ignition source 12v wires and constant 12v source. The desktop harness link should have the info needed regarding pins
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