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4L60e power economy switch

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Old 06-02-2015, 05:50 AM
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Default 4L60e power economy switch
Hi
Have a question regarding the power economy switch on a 4l60e. Have one behind an ls1 in a 32 coupe we drag race. We have a momentary switch fitted to earth it out as per how it should work. My question is is there anyway to wire in a light to know if its on or off.
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Old 06-02-2015, 11:21 AM
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Its described on the lower part of page 3.

http://mrk-motorsports.com/pdf/1998%...1999%20PCM.pdf
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Old 06-02-2015, 04:12 PM
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I know the older obd1 pcm's had an LED driver output for performance mode, but I do not think the newer pcms have the feature anymore.
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Old 06-02-2015, 05:03 PM
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It depends on the PCM operating system number. OS 12212156 supports it in 99 silverados.
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