Engine/Transmission (1998.5 - 2002) If the ??? signal to the ECM is missing it will not start!

[rweis]

Thinking about anti theft and what the ECM HAS TO HAVE to start.



It HAS TO HAVE:



Camshaft Position Sensor? ECM pin # 17 (Does it?)



Fuel Injector Pump Synch Signal? ECM pin # 18 (Does it?)



Cummins Bus? ECM pin # 2 (Does it?)



APPS signal? ECM pin # 25 (Does it?)



Other inputs that it HAS TO HAVE?



Bob Weis

 

[Bob4x4]

It must have crank sensor to start. If it is equipped with a skim key it must receive a message from the skim module



Bob

 

[rweis]

Uhhhhhhh, what's a



"If it is equipped with a skim key it must receive a message from the skim module"



never knew we (I) had one .



Bob Weis

 

[JApol]

I don't know about 2nd gen but 3rd gen have black and grey keys. The grey ones are the SKIM keys. Its another anti-theft device

 

[rweis]

My '02 only has the black key (no chip).



Bob Weis

 

[Gary - K7GLD]

Uhhhhhhh, what's a



"If it is equipped with a skim key it must receive a message from the skim module"



never knew we (I) had one .



Bob Weis

I believe that's a unique chip inside the 3rd generation key that is coded to each truck, and must match, or it sets off the alarm - my '85 vette had that feature...