[Gmecm] DLC question

Wed Aug 8 04:55:18 UTC 2007

There's no Onstar, was it available in '02 pickups?  Maybe LT, but not
my LS.  Also no changer.  So I'm out of luck?  I thought you were going
to save me lugging the scope out there, but now I guess I'll have to.
:-)

--steve

> -----Original Message-----
> From: gmecm-bounces at diy-efi.org 
> [mailto:gmecm-bounces at diy-efi.org] On Behalf Of WopOnTour
> Sent: Tuesday, August 07, 2007 6:24 PM
> To: gmecm at diy-efi.org
> Subject: Re: [Gmecm] DLC question
> 
> FYI
> one end of the green E&C wire goes to either a "blunt cut" 
> dead ended wire if w/o Onstar or remote CD player or TO those 
> items (if equipped) WOT
> ----- Original Message -----
> From: "WopOnTour" <wopontour at hotmail.com>
> To: <gmecm at diy-efi.org>
> Sent: Tuesday, August 07, 2007 5:05 PM
> Subject: Re: [Gmecm] DLC question
> 
> 
> > Cool
> > It IS E&C!
> > The audio schematics show it from pin 14 of the DLC to C2 
> pin 15 (E&C) 
> > of the radio, even though the DLC schematic shows it as 
> being unpopulated.
> > Good Luck on the E&C interface!
> > WOT
> > ----- Original Message -----
> > From: "Steve Ravet" <Steve.Ravet at arm.com>
> > To: <gmecm at diy-efi.org>
> > Sent: Tuesday, August 07, 2007 2:14 PM
> > Subject: RE: [Gmecm] DLC question
> >
> >
> > I'd like it to be E&C, after I get my USB/VPW project done 
> I'd like to 
> > do an E&C project.  I'll put a scope on and see what it does.
> >
> > --steve
> >
> >> -----Original Message-----
> >> From: gmecm-bounces at diy-efi.org
> >> [mailto:gmecm-bounces at diy-efi.org] On Behalf Of Scott Pearson
> >> Sent: Tuesday, August 07, 2007 8:58 AM
> >> To: gmecm at diy-efi.org
> >> Subject: Re: [Gmecm] DLC question
> >>
> >> Green was traditionally E&C data. Might check and see if 
> it connects 
> >> to the radio.
> >>
> >> Scott
> >>
> >> ----- Original Message -----
> >> From: "WopOnTour" <wopontour at hotmail.com>
> >> To: <gmecm at diy-efi.org>
> >> Sent: Monday, August 06, 2007 10:01 PM
> >> Subject: Re: [Gmecm] DLC question
> >>
> >>
> >> > Steve:
> >> > According to the wiring 2001 thru 2003 DLC wiring
> >> schematic, there should
> >> > only be 4 wires to your DLC.(as you  indicated) The 
> green wire you 
> >> > have in pin 14 has likely been something
> >> added by some
> >> > after market accessory or gage. While it's true pin 14 is
> >> designated for
> >> > CAN, there was not CAN (GMLAN) implemented (at the DLC at
> >> least) into any
> >> > GM truck in 2002. If there WAS (eg. as for the Parallel
> >> Hybrid Truck -PHT
> >> > a couple years later in 2004)  it would be DUAL WIRE CAN
> >> (aka High Speed
> >> > GMLAN) and therefore would also require there be a wire in
> >> pin 6 (HS GMLAN
> >> > +). These wires are usually tan (pin 14 GMLAN HS-) and
> >> tan/wht  (pin 6
> >> > GMLAN HS+)  What do you measure on that wire with a DVOM or DSO??
> >> > Regards
> >> > WOT
> >> >
> >> > ----- Original Message -----
> >> > From: "Steve Ravet" <Steve.Ravet at arm.com>
> >> > To: <gmecm at diy-efi.org>
> >> > Sent: Saturday, August 04, 2007 9:37 PM
> >> > Subject: [Gmecm] DLC question
> >> >
> >> >
> >> > The schematics for my truck ('02 K1500) show 4 wires to the DLC:
> >> >
> >> > pin 2:  class2 data
> >> > pin 4:  gnd
> >> > pin 5:  gnd
> >> > pin 16: Vbatt
> >> >
> >> > But my actual connector has a fifth wire, green, on pin 14.
> >>  The OBD2
> >> > spec seems to say this is a CAN line, but if CAN were
> >> implemented there
> >> > would have to be a wire in pin 6 also, and there's not.
> >> Any idea what
> >> > this wire might be?
> >> >
> >> > thanks,
> >> > --steve
> >> >
> >> > -------------------
> >> > Steve Ravet
> >> > ARM
> >> > steve.ravet at arm.com
> >> >
> >> > --
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> >> >
> >> >
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