2001 Trans Am PCM not Turning On
08-18-2015, 08:45 PM
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2001 Trans Am PCM not Turning On Hey guys so I just got done putting another 5.3 into my turbo Trans Am and I am having a hell of an irritating problem.
I went to start the car for the first time yesterday after the swap and I noticed my fuel pump was not kicking on and that my service engine soon light wasn't coming on.
I then decided to check every fuse, relay, and ground on the car. All my fuses are good, as far as I can tell, and every ground is connected, has a clean contact, and is tight.
So at this point I figured I should see if I'm getting power at pin 20 and 57 on the blue connector. With key off and key on I am not getting any voltage. This would likely explain why nothing is working that is controlled by the PCM.
The car does crank, vats has already been bypassed in the past and also turned off in the PCM when I got a tune on the old 5.3. The service vehicle light is also on in the dash with key on. At this point I'm stumped and have no clue what do to. It's so close to running and now this problem. Any input would be great guys. Thanks a ton.
I went to start the car for the first time yesterday after the swap and I noticed my fuel pump was not kicking on and that my service engine soon light wasn't coming on.
I then decided to check every fuse, relay, and ground on the car. All my fuses are good, as far as I can tell, and every ground is connected, has a clean contact, and is tight.
So at this point I figured I should see if I'm getting power at pin 20 and 57 on the blue connector. With key off and key on I am not getting any voltage. This would likely explain why nothing is working that is controlled by the PCM.
The car does crank, vats has already been bypassed in the past and also turned off in the PCM when I got a tune on the old 5.3. The service vehicle light is also on in the dash with key on. At this point I'm stumped and have no clue what do to. It's so close to running and now this problem. Any input would be great guys. Thanks a ton.
08-28-2015, 01:01 AM
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Join Date: Feb 2015
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Hey guys so I just got done putting another 5.3 into my turbo Trans Am and I am having a hell of an irritating problem.
I went to start the car for the first time yesterday after the swap and I noticed my fuel pump was not kicking on and that my service engine soon light wasn't coming on.
I then decided to check every fuse, relay, and ground on the car. All my fuses are good, as far as I can tell, and every ground is connected, has a clean contact, and is tight.
So at this point I figured I should see if I'm getting power at pin 20 and 57 on the blue connector. With key off and key on I am not getting any voltage. This would likely explain why nothing is working that is controlled by the PCM.
The car does crank, vats has already been bypassed in the past and also turned off in the PCM when I got a tune on the old 5.3. The service vehicle light is also on in the dash with key on. At this point I'm stumped and have no clue what do to. It's so close to running and now this problem. Any input would be great guys. Thanks a ton.
I went to start the car for the first time yesterday after the swap and I noticed my fuel pump was not kicking on and that my service engine soon light wasn't coming on.
I then decided to check every fuse, relay, and ground on the car. All my fuses are good, as far as I can tell, and every ground is connected, has a clean contact, and is tight.
So at this point I figured I should see if I'm getting power at pin 20 and 57 on the blue connector. With key off and key on I am not getting any voltage. This would likely explain why nothing is working that is controlled by the PCM.
The car does crank, vats has already been bypassed in the past and also turned off in the PCM when I got a tune on the old 5.3. The service vehicle light is also on in the dash with key on. At this point I'm stumped and have no clue what do to. It's so close to running and now this problem. Any input would be great guys. Thanks a ton.
Did you found the problem cuz I am having similar problem after heads swap today
