What does interchangeable ECU mean for GM trucks?
What does interchangeable ECU mean for GM trucks?
Rather than make/model specific ECM/PCMs, GM began utilizing fully interchangeable ECUs in its car and truck lines. That means, while appearance and capability has changed over the years, the basic platform for how the ECU operates has been fairly stable since the LS engine was introduced.
What kind of ECU do I need for Gen IV engine?
Gen IV engines also used a one-tooth, and four-tooth cam positioning indicator on the cam gear. With Gen IV engines, it’s best to stick with the same type of controller as used originally, either E40, E38, E67 or E78.
Where is the ECU located on a LS engine?
ECUs in 1997-2004 LS engines utilize a 24x reluctor wheel on the crankshaft and have the cam position sensor in the block, at the rear of the intake. Gen IV engines have a front-mounted cam position sensor and use a 58x wheel on the crankshaft (aside from 2005s utilizing the E40 ECM).
Where can I get an aftermarket ECU harness?
If you were to go with an aftermarket harness from a company such as Speartech or Howell Engine Developments, Inc., you would get a new harness, wired out for your application, using only those circuits that you need.
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Rather than make/model specific ECM/PCMs, GM began utilizing fully interchangeable ECUs in its car and truck lines. That means, while appearance and capability has changed over the years, the basic platform for how the ECU operates has been fairly stable since the LS engine was introduced.
Gen IV engines also used a one-tooth, and four-tooth cam positioning indicator on the cam gear. With Gen IV engines, it’s best to stick with the same type of controller as used originally, either E40, E38, E67 or E78.
ECUs in 1997-2004 LS engines utilize a 24x reluctor wheel on the crankshaft and have the cam position sensor in the block, at the rear of the intake. Gen IV engines have a front-mounted cam position sensor and use a 58x wheel on the crankshaft (aside from 2005s utilizing the E40 ECM).
