Marcus18 Posted August 8, 2003 Report Share Posted August 8, 2003 I have a series 1 3800 s/c engine with no harness or computer. what should I do? is there a aftermarket ecu that can control the transmission? it's a 4t60e. marcus Quote Link to comment Share on other sites More sharing options...
92turboLE Posted August 8, 2003 Report Share Posted August 8, 2003 Haltech has a computer that is direct swap that plugs into the GM engine wiring harness. its like 1200 bux though, but it is fully programable via laptop on the fly... - Justin Quote Link to comment Share on other sites More sharing options...
Robby1870 Posted August 9, 2003 Report Share Posted August 9, 2003 Your best, safest and cheapest bet is to get a stock ECM and harness from a Series I 3800. Robby Quote Link to comment Share on other sites More sharing options...
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