Hi. I buyed a pcm on ebay. Its a 2001 4x4 truck for 5,3.
when ill inst it my truck it want start. The anti theft is stopping it.
What can i do? can the dealer fix it?
Reg Chris

 

The pcm needs to be set up for your vin, you cant just put a different one in your truck without setting it up first.

There are too many different options per truck.

Plus the airbag system will throw a light, shifts may be off ect..

 

okey, even if the trucks are identical, same setup?

 

Turn the key on and then crank the engine till it dies leave the key in the run position after the motor dies. The security light will come on and go back and forth between that and the battery light for ten minutes after ten minutes the security light will go off

Turn the key off for three seconds and then just turn to crank long enough for the starter to spin for a second. Wait ten minutes again till the secuirty light goes off.

Follow the above method for a third time this is a 30 minute procedure. This time after the lamp goes off for the last time turn the key off for three seconds and then crank the motor. It will start and run.

But both trucks have to be 2001. If the pcm you ordered is newer or older it still willnot start due to differences in the passlock encryption codes. But as wait for me stated there may be a lot of differences in gears, tire size etc that will cause speedometer error and shift problems.

 

it will still have the wrong vin number in it. so it will throw lights.