HP Tuners Unable to Connect
HP Tuners Unable to Connect I'm working on my swap from a 2000 silverado 5.3. I am trying to flash in my tune but HP tuners says it is unable to connect, to check if it was HP tuners I tried with my scan tool and it also cannot connect to the pcm.
I have checked the power fuse it is fine, as well as the grounds and the wire running to B 58 on the PCM is good.
Also the pcm functions fine, as the motor will start and everything seems to function properly.
Anyone have any ideas as to what would cause this?
Note: I just noticed while searching that the power to my OBD2 port is ignition and not battery power, would this cause my problem?
I have checked the power fuse it is fine, as well as the grounds and the wire running to B 58 on the PCM is good.
Also the pcm functions fine, as the motor will start and everything seems to function properly.
Anyone have any ideas as to what would cause this?
Note: I just noticed while searching that the power to my OBD2 port is ignition and not battery power, would this cause my problem?
At one point I had to replace my OBDII in the car because the connection was intermittent. Not saying that is your problem but it was mine.
Also IIRC I had both constant 12v power and an ignition switched power as well.
Also IIRC I had both constant 12v power and an ignition switched power as well.
