P0102 gmc Yukon xl 5.3 fixed 

hey buddy ! hope all is well. So i did a couple of test. So when the maf was connected, it was getting readings that didnt check out. And when i disconnected it, it all had the right voltage, But in the grounds were reading 0.03

What brand and model is your tester? Thanks for the video. I’m having Dane issue on same vehicle

Question my 1st wire is 8.3v instead of 5v. 2nd wires is 12v. 3rd is gnd 4th is 8v instead of 3.5v . 5th is gnd. Why do I have 8v instead of 5v and 3.5v

Hi im having the same issue but I’m not getting no reading on the black and white wire

I have a 2000 chevy silverado an the tan wire checks in at 1.9 volts unplug it an it's 4.8 to 4.9 ???