98 S10 4.3 vortec PCM in a 97 S10 4.3 vortec truck

[roughneck427]

I know the horrid 96-97 pcm ******* child PCM's i used the search function and didnt find much.Anyone try using a 98 pcm in a 97 truck so i can use MXscan??

[Hog]

I hope you can. If you can, so can I.


Anyone??

peace
Hog

[AussieLS1evil]

Originally Posted by Hog

I hope you can. If you can, so can I.


Anyone??

peace
Hog

Does anyone have the wiring diagrams for both pcm's?

Could you post them or links and we could have a look.

You may need to upgrade sensors on or around your engine.

Like on holdens they used a larger maf sensor after 2004 and when upgading operating systems you need to change the maf and rewire the intake air temp sensor.

You could splice into your harness to have a option to run one or the other if you really wanted to. This will allow you to work on the tune in the upgrade while keeping your truck on the road. You can only run one pcm connected at a time....hehe

One issue I have seen of late is that you need to sort out the set dtc's or crank relearn will not happen.

hard dtc's will put the pcm in backup mode.

cheers

mick

[roughneck427]

heres the 98 connectors









heres the 97 connectors in order 1234

[roughneck427]

I have a password to alldata professional if anyone needs more pinouts

[97K15004WD]

Roughneck: Thanks for the info!

[roughneck427]

No problem

[Hog]

you can use the 411 PCM instead of the 98-00 305, 350 PCM's.

You need a file from a 2001 or 2002 fullsize van with the L30 305 or L31 350 or L35 V6.

I have the pinouts for a 2002 L31 350 van, but it would be nice to see them posted on this site like the pinouts that Roughneck 427 put up.

thanks

peace
Hog

[roughneck427]

well this is what i found looks like different connectors let me know if i need to look up under a different application i went under a 2002 1/2 ton express van with a 5.7

[99bluetahoe]

sweet. These will come in handy.