OBD2 not working for some reason (used to) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

FAKKY · 01-24-2021, 02:33 PM

Havent driven the truck in a while.
Went to connect my OBD2 scanner (HPTUNERS) which always used to work - no signal; to VCM suite. Also dont see the oriange light on the ODB section of tool that plugs in (just PWR).

I checked pins 4+5 and they both have ground.
Pin 16 has constant 12v.

So that just leaves me with the #2 data port ? What to check here ?
I think its tied into PCM at C1 Blue connector Pin #58.

01-24-2021, 02:33 PM	#1
FAKKY Registered User Join Date: Sep 2016 Location: Redington Beach Posts: 1,317	OBD2 not working for some reason (used to) Havent driven the truck in a while. Went to connect my OBD2 scanner (HPTUNERS) which always used to work - no signal; to VCM suite. Also dont see the oriange light on the ODB section of tool that plugs in (just PWR). I checked pins 4+5 and they both have ground. Pin 16 has constant 12v. So that just leaves me with the #2 data port ? What to check here ? I think its tied into PCM at C1 Blue connector Pin #58. __________________ FAKKY 57 PANEL BUILD

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