The big question is "where is all that Lithium to come from". China controls most of the supply and we would probably have to rape the amazon rain forests to increase the supply needed to produce all these batteries.
That is correct! I used one to reset my ethanol percentage and do some diagnostics. It is a bugger to install in the PC, but, it is definitely a Tech2 clone. I have not signed up for GMs programming software yet.
I do not see anything missing but it looks like the headlight wiring has been redone to run HID lights and some other things. They are all sitting in the second battery tray so I assume that the truck does not have the second battery option.
If it is running rich then you have an air starvation issue. Did you check the air filter for restrictions and also clean the MAF sensor with the proper cleaner. If the alcohol content was wrong then it would be running lean and add more fuel to compensate throwing codes P0171 and P0174. Low fuel pressure can also cause this to a certain extent but is not very likely. An exhaust leak could alos show these symptoms. Check the long term fuel trims and that might point you in the correct direction.
No flex fuel sensor. It is calculated based on MAF and O2 readings. I would be looking at the wiring for the MAF and Throtle Body before going any further. What codes are showing? What happens to the LTFTs is more critical than the STFTs and as well the ethanol %.
The switch is at the top of the brake pedal. It has several circuits and one may be bad. I replaced mine because the cruise would not work and then several months later the traction control and stabilitrack would not work. Brakes and lights worked OK though. Five minute install time.
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