Flex Fuel Sensor NNBS

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02-13-2016, 09:46 PM

chopperloco

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Flex Fuel Sensor NNBS

Where is the factory flex fuel ethanol content sensor located on a NNBS? (rcsb or?)
Any pics?
Also part number if possible
Mine is an 07
Thanks again
Dom

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02-13-2016, 10:04 PM

TAPyvehc93

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Quote:

Originally Posted by chopperloco

Where is the factory flex fuel ethanol content sensor located on a NNBS? (rcsb or?)
Any pics?
Also part number if possible
Mine is an 07
Thanks again
Dom

There is no "actual" ethanol sensor on these trucks. Its a virtual sensor. Many people like myself have installed and wired in the actual GM ethanol sensor. Its fairly easy to do. Cant remember the part # for the sensor though.

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02-13-2016, 10:06 PM

FFDP

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Yeah it takes readings from the o2 sensors to determine alcohol content.

Like said you'll have to wire in a real sensor to have a really accurate reading for the computer.

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02-14-2016, 03:39 PM

chopperloco

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Thanks Men...

...that explains why i couldn't figure it out with the dealer...has there been a write-up on this?
Also,is the software there in a non-flex fuel NNBS?