Diagnostic help

[GreenwithEnvy]

I've got a 96 Z71 pickup with the 5.7 and 4X4. The I'm trying to pull codes from the ECM using the jumper wire to short the A port to the B port on the ALCL plug. I have located a plug under the drivers side dash. Is this my ALCL? Also, how are the plugs pinned out? I have the 2 plugs to the farthest right , top and bottom jumped together and I can not get my check engine light to blink. I know the plug is ported A thru M and skipping I. Which two ports are A and B?

[4freddie]

95 and newer require a code reader. go to autozone for a free scan and good starting point

[DaMoNe6969]

You've got the OBD2.. a little more advanced than the old "jumper wire" diagnostics..

You can buy an obd2 scanner, here they are about $180cdn.. Or You can take it to a shop like 4freddie mentioned, but here they charge you to scan it

[SpitAndDirt]

http://obddiagnostics.com for a free software download that will allow you to use a laptop to interface with your vehicle. Only downside, you do need to buy an interface, unless you are capable of building one. -Chris

[gschretter]

I am looking to buy a K3500.

I have the code reader but where is the port in order to pull the codes?

Thanks

[SpitAndDirt]

Under the drivers side dash. Usually located nearly underneath the column. 16 pin connector. You really can't miss it.