Duramax Lifetime Supporter
Join Date: Oct 2016
Location: Maurice, LA
For those of you having trouble reading the sensor with your monitor here is what I have found so far.
I plugged both the sensors from my Pre and Post DPF into the Pre DPF plug. It will not read either sensor while plugged into the Pre location. I plugged both into the Post DPF plug nd they both functioned fine, and were readable on my EDGE CTS.
Clearly the Pre DPF system is faulty, most likely the plug itself.
Here is what Im going to try, in this order:
1. Take apart the connector on the Pre DPF sensor and see if it is dirty, clean it, and plug each individual wire into one sensor to see if it works. If it does I will reassemble the connector and try again.
2. If that fails Im going to try cutting off the plug for the Pre DPF and on the sensor and connect them directly without the connector. IF the system is good but the plug is bad this should work. Assuming it does I will solder the connections and heat shrink them.
3. If plan #2 fails I am going to get two wires larger than the wires to the plugs and solder them as extensions so I can use the Post DPF plug which I know works. Since the system is measuring resistance generated in the thermocouple based on heat on the bi-metal strips in that thermocouple the larger wires with good solder connections should not generate any additional resistance.
Hopefully one of the methods works, we shall see and I will report back the results.
I know, this seems like a lot of work but I am on a mission to MAKE it work. Wish me luck!
2008 Silverado 2500HD CCSB LTZ Diesel
FASS 95 Lift Pump (with Baldwin filters), Edge Insight CTS Monitor on a Windshield Mount, Nicktane Fuel Filter Adapter w/ CAT 306-9199 UHE tertiary fuel filter, Bilstein 5100 Stock Height, Bushwacker Bed Rail Caps, AMP Research Bedstep, Fumoto oil drain valve, Dorman PS Oil cooler, Pioneer AVIC 7200NEX GPS/Stereo, Air Lift LoadLifter 5000 Air Bags.
Last edited by 407driver; 08-17-2019 at 01:41 PM.