LS Swapped No Communication With ECM
- Thread starter JSTEWY
- Start date
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dougbert
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- Joined
- Nov 2, 2015
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- 659
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- 174
- Location
- 5535 feet in Utah Mountains
- First Name
- doug
- Truck Year
- 1984
- Truck Model
- K1500/nv4500/np241c/33x12.50x16/4.10 Gears 14BFF
- Engine Size
- 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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- Feb 2, 2011
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- Latham, NY
- First Name
- Mark
- Truck Year
- 1986
- Truck Model
- K30
- Engine Size
- 12v Cummins
Vats been removed?
yevgenievich
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- Viktor
- Truck Year
- sad
- Truck Model
- very sad
- Engine Size
- less sad
It needs ignition source 12v wires and constant 12v source. The desktop harness link should have the info needed regarding pins
