Starts then dies

[codsta8]

Last night I put a custom dash panel in my truck, afterwards when I went to crank it it would not start. I am pretty sure that I activated the past locks if anybody has any extras suggestions I would greatly appreciate it. I checked and I have fuel pressure and spark starts up as soon as it gets going it dies

 

[joedee]

Did you check the security fuse .. mine did this , fire right up and shut right back down ..ended up being the fuse in the dash fuse panel #21 on my 1998

 

[codsta8]

Yeah I tried it with it out and even replaced it

 

[codsta8]

Tested it with multimeter also

 

[codsta8]

Truck is a 98z71 5.7 btw.

 

[joedee]

I assume you unhooked the battery for a bit too...?

 

[98_k1500]

Is your steering column original?

 

[codsta8]

Yes it isp

 

[mattillac]

Does the SECURITY light in the upper right hand corner of the instrument panel illuminate ?
If passlock is disabling the injectors the SECURITY light should be illuminated and or flashing just after the engine abruptly stalls.

Like this here.
https://www.youtube.com/watch?v=yDRwkEFLq-U

Besides that fuse #21, the GAUGES fuse(#4 10amp)also provides(hot in run and start)power to the passlock module.
Might want to check that fuse as well.

Here is a schematic: http://ww2.justanswer.com/uploads/tracker40/2009-11-17_204947_1.gif

A bit of info on reprogramming.

PASSLOCK REPROGRAMMING AUTO LEARN

IMPORTANT: If a new vehicle/powertrain control module (VCM/PCM) is being installed for the first the manufacturing enable bit will be set and the auto learn procedure may not be necessary.

The following procedure allows for anyone to reprogram the EVO/PASSLOCK module learned data code with any tools, other than the scan tool, when any of the following parts are replaced:

The EVO/PASSLOCK module
The PASSLOCK sensor
The VCM/PCM

The EVO/PASSLOCK module will set the DTC B3031 in the learn mode when entering the reprogramming procedure.

IMPORTANT: Erase the PASSLOCK related Diagnostic Trouble Codes (DTCs) that are stored in the VCM/PCM.

The following is the Auto Learn Procedure:

1. Insure the ignition key is in the ON position.
2. Clear all EVO/PASSLOCK module and VCM/PCM DTCs.
3. Momentarily rotate the ignition key to the CRANK position (Do NOT start the vehicle), then release it to the RUN position (Do NOT key OFF in the process).
4. Wait 10 minutes . Observe the SECURITY indicator. Refer to the following list for the appropriate responses:

-If the PASSLOCK sensor was replaced the SECURITY indicator will flash for the 10 minutes duration.
-If the EVO/PASSLOCK module was replaced, the SECURITY indicator will flash for a few seconds and then remain ON for the remainder of the 10 minutes duration.
-If the VCM/PCM was replaced with a new programmed VCM/PCM and connected to the vehicle for the first time, the vehicle will start and this procedure may not be necessary.
-If the replacement VCM/PCM was connected to any vehicle at any other time, even momentarily, the SECURITY indicator will flash for a few seconds and then remain ON for the 10 minutes duration.

5. The SECURITY indicator will transition from flashing to ON briefly to OFF after 10 minutes if remaining in the ignition ON position.
6. Turn the ignition switch to the OFF position and wait for 10 seconds .
7. Repeat steps 3-6 two more times. The new security code is ready to be communicated among the PASSLOCK sensor, EVO/PASSLOCK module and VCM/PCM. The new password is learned on the next ignition lock cylinder cycle from OFF to CRANK to ON (start attempt).

¯\_(ツ)_/¯

 

[GMCTRUCKS]

You Tube has a good video on how to by pass the system it will save you a ton or money and worries.