urdone

iTrader: (1)

Will a 5.3 truck pcm 0411 will work on a ls1 motor? Im about to repin my 98 pcm that i have in a ls1 but i was wondering if the 5.3 truck pcm will work.

Thanks in advance...

minytrker

iTrader: (13)

Yes, you just need to flash it with correct tune.

urdone

iTrader: (1)

So i had it repin for a 2001 comaro pcm but i could't find one so a friend gave me a spare one that he had, but its a silverado, no i cant turn on the truck.

89 formula350

iTrader: (8)

not to sound mean but....


so you installed the pcm and now it will not start? did you reprogram it for your application as stated above? it needs to be a full reflash

gectek

iTrader: (2)

Dont forget the fuel sender segment swap that would need to be done.......

LS1MCSS

iTrader: (18)

You must not have looked on ebay. There are a couple dozen different auctions for them.

urdone

iTrader: (1)

Thats what im trying to do but my interface wont read it so i can't do nothing to it.

89 formula350

iTrader: (8)

What are you using to communicate with it?

double check your wiring, verify the actual voltage and verify the grounds are good (ohm the ground circuits)

blue connector,

pin 1 and 40 need ground.
pin 19 needs switched (ign) voltage in run only
pin 20 and 57 needs battery voltage all the time

pin 58 serial data



red connector,

pin 1 and 40 ground

just these and you can communicate and program the pcm

urdone

iTrader: (1)

I was checking it and i think the pin 58 serial data is not plug, it didt show me in the diagram i was using. By any chance you dont have a diagram that will help to check it out?

Im using hp tuners, my interface has power but it just not comminicating.

89 formula350

iTrader: (8)

I can get you what ever diagram you want. what are you looking for specifically? diagnostic link to pcm diagram? or the connector end view of the pcm connectors?

urdone

iTrader: (1)

^^^ The connector end view of the pcm.

So i can know what cable goes to the pins.

DisOwnd

iTrader: (1)

i have a computer from a camaro and need a truck computer... my thing is i need a flex fuel truck computer