J-Herkel's latest activity
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Initially I thought he was measuring one terminal that went from 12V to 8V back to 12V. Now I see he has one constant 12V, and the other... -
Dont we already know that is happening since OP is getting 12v at the relay coil when key is turned to engine crank? No way for that to...
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Good luck, fingers crossed! Scanner should be able to tell you if the ignition if ECM/BCM are receiving the start signal. Should be able...
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Scanner will be practically useless for this failure other than to see input and output state of BCM and PCM. Need to ohm that ground...
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J-Herkel replied to the thread 07 LT 5.3L Sudden no start/crank.Thank you. I have a friend coming over tomorrow with an advanced scanner to see if it comes up with anything. I'll keep you updated and...
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It's not comms with the BCM, it's just the ignition/key start signal. 12V. and the yellow wire is the starter relay trigger signal.. The...
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J-Herkel replied to the thread 07 LT 5.3L Sudden no start/crank.I've tried N. Wiggling it while cranking, just took the ignition switch off and wiggled it while cranking. Stepping ******* the brake...
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is the shift indicator showing it is in PARK?, try moving it to neutral that could be another reason for no start
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J-Herkel replied to the thread 07 LT 5.3L Sudden no start/crank.Wouldn't it throw a code if it lost coms with the BCM?
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You need to have power on the pink wire from ignition switch (J1-14 on the BCM connector) J1-21 is just accessory power, J1-14 is the...
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J-Herkel replied to the thread 07 LT 5.3L Sudden no start/crank.Yes, just accessories. It jumps to 12v when the key is being turned to the crank position.
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J-Herkel replied to the thread 07 LT 5.3L Sudden no start/crank.So the Fuse you mentioned is good. I went as far as taking the entire Fuse box out and apart to inspect it all and there is no...
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Im on it! :head3:
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J-Herkel replied to the thread 07 LT 5.3L Sudden no start/crank.Thank you for detailed breakdown. That's great info! I will check all of that today and get back with you. Amd as far as jumping the...
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Im not quite sure what you jumpered in the ignition relay whether it be the control side or the controlled side. Im assuming you jumped...
