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For those vehicles that use a BCM, the BCM can learn the resistance value of the existing key by using the relearn process. In order for the vehicle to start, the BCM (as well as the Passkey module in other vehicles) must identify the resistor pellet in the key, then the BCM sends a password to the PCM. If this password matches the password stored in the PCM, the system enables fuel delivery. So you can see that if either the BCM or PCM are replaced, a relearn procedure is necessary. This same relearn procedure can be used if an ignition key with a different resistance value is used to replace the existing key. Before beginning the relearn, make sure there is a fully charged battery in the vehicle, and both the BCM and PCM are properly powered up and in communication with each other. Now you're ready to initiate the relearn procedure.
1. First, insert the ignition key and turn the ignition switch to the "On" position (Do not start the engine). Leave the switch on for 11 minutes. The security light may flash or be on steady during this 11 minute period. Make sure the light is no longer on or flashing before proceeding to #2 .
2. Turn the ignition switch off for 30 seconds.
3. Turn the ignition switch to the "On" position (as in step #1) for 11 minutes again.
4. Turn the ignition switch off for another 30 seconds.
5. Turn the ignition switch to the "On" position for 11 minutes a third time.
6. Turn the ignition switch off for 30 seconds one final time.
7. Turn the ignition switch to the "On" position one final time and wait 30 seconds.
8. Attempt to start the engine. If the engine starts and runs normally, the relearn is complete. If the engine does not start, check for trouble codes and address them before attempting the relearn procedure again.
Sorry kinda long but it is what it is.
Have a good one.
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SOURCE: does fuel pump have a reset
Can you hear the pump run when you turn the key on? Remember that system is pressurized and will easily spill because of this. There is no reset for fuel pumps, that's on Fords. If you pour gas into the intake it starts, then I would tell you to take a long handled screwdriver or a stetoscope if you have one and place it on one of the fuel injectors and listen when someone cranks the engine. If you don't hear the clicking of the injector while cranking, then your problem is not fuel related. Maybe crank sensor, or even computer. The computer not the module is what controls the fuel injection. The module controls spartk just to let you know. Try getting a trouble code...Hopefully this gets you in the right direction. Good luck.
SOURCE: Starting problem
i would try replacing your fuel filter, If that doesn't work (which it should) then because its a 2005, there should be a relief valve on the fuel rod, try opening the valve to see if there is fuel gettin that far. then get back to me.
SOURCE: my 02 trailblazer wont start, it cranks but wont
you have fuel ? check spark . 4200 motors have crank sensor issues
SOURCE: My car won't start have replaced pcm, bcm, fuel
THE DEALERSHIP HAS TO REPLACE PCM.BECAUSE THE PCM HAS TO REPROGRAM BEFORE CAR WILL CRANK.YOUR CRANKSHAFT SENSOR AND THEFT SECURITY SYSTEM HAS TO BE REPROGRAM THATS WHY CAR WONT CRANK.
SOURCE: How to reset 2005 Chevy Trailblazer, so I can get the car started
How do I reset my 2004 trailblazer computer.
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