NO START

[88LTDCV351]

I found this old post:

When you get the scanner that can read and report PATS codes, that'll tell you something, also watch the red light. A properly functioning PATS will flash every 2 secs with no key, as a visual deterrent. Turn the key to RUN, it will glow steady 3 secs then go out. PATS violations will rapidly flash in RUN for about 3 mins...then it will go out. WATCH THE RED LIGHT, it will now flash a two digit code...1 -1 or 1-6...count the flashes. You don't need a scanner for this. Look up that code online. Mine was flashing 1-1 over and over...not getting a key signal to the PCM. it is either the PCM , the key or the immobilizer, and you already checked the last two...maybe Eddie can lend you a spare PCM then jump the solenoid to crank over the car. Important point, my car would start with the wrong PCM as long as the immobilizer gave it the wrong signal, but NOT with the correct key and no signal....apparently no signal either right or wrong will not let the PCM initiate the start sequence. Good luck .

I can tell you that the Red Light is not rapidly flashing and is not solid for the first 30 seconds or whatever like when normal startup occurs. Does 1 - 1 mean one flash and then one flash and 1 - 6 is one flash followed by six flashes? Just seems to be flashing like always to me even when the key is turned all of the way.

[88LTDCV351]

OK, so the intermittent issue has started again regardless of which key I use. Was stuck at the dentist for 45 minutes and then the car finally started. So I'm thinking next it could be the transceiver.

Is the transceiver (that goes around the key cylinder) and immobilizer the same thing on our cars? Or two separate parts?

[1Marauder]

Brake safty start issue has been reported too. Also gently shake wires over passenger side top of motor near firewall, passenger wiper