Does anyone have the pinouts for connector X109 on a 2007/2008 Chevy C/K truck? I have the factory engine controls manual but it is not in there. I also bought a manual on disc but there were not connector pinouts in any section?
I have identified the Accelerator pedal, MIL and OBD scan port wires in it, but there are about 6 more I can't identify.
Thanks!
Anyone?? Bueller?
What is connector X109?
X109 is the connector I am trying to identify the pinouts for?
On the attached file X109 is connector #6. The diagram shows the connectors that plug into the bottom of the underhood fuse block as #3 and #4 are X1 and X2.
As I mentioned, it contains the signal from the Accelerator pedal, OBDII scan port and something else I can't identify.
This connector is on a 2007/2008 GM truck, Suburban, Silverado etc.
Last edited by markeheiden; 01-18-2010 at 05:19 PM. Reason: Forgot attachment
Ok, so you do have the pinouts for X1 & X2? I just did a stand-alone harness for a 2008 Silverado
Yep, The pinouts for X1 and X2 are in the C/K PU truck engine service manual. X1 and X2 are also in the wiring diagrams and in the electronic copy of the service manual that I have but connector pinout for X109 is not there.
I have found the following pinouts for X109 by tracing wiring diagrams:
A6 GMLAN +
A7 MIL CTL
A8 GMLAN -
B2 Batt Curren sens
B3 "
B4 "
Accelerator position switch:
C1 Lo Ref.
C2 App2 sig.
C3 5v Ref. 1
C4 APP1 sig.
C5 5v Ref. 2
C6 Lo Ref.
Now all I am missing are 3 wires,
B5- Blk. with White stripe
B6- Dk. blue
B8- Dk. blue
I just don't want to cut em until I am sure I don't need them.
Last edited by markeheiden; 01-18-2010 at 09:54 PM.
Maybe this will help
Yeah thanks but I have that already. It shows C4, C5 and C6 which I have already identified previously. In fact I think I have all the schematics and most engine connector end views but no X109.
Missing is B5, B6 and B8 as described.
X109 is a 24pin connector that has 3 rows of 8pins each row.
Last edited by markeheiden; 01-19-2010 at 05:10 PM.
Does it look like this?
Note the RPO codes
X109 Engine Harness (except Diesel) or Engine Chassis Harness (Diesel) to Instrument Panel Harness (NQF/NQH)
B5 is BK/WH circuit # 451 it is a ground
B6 is OG Circuit # 1553 it is motor Contorl B
B8 is D-BU Circuit # 5985 It is Accessory wakeup Serial Data
X109 Engine Harness (except Diesel) or Engine Chassis Harness (Diesel) to Instrument Panel Harness (except NQF/NQH)
B5 is BK Circuit # 451 it is Ground (except MEX)
B6 is D-BU Circuit # 204 it is A/C Low Pressure Sensor Signal (C67/CJ2)
B8 is D-BU circuit # 5958 it is Accessory Wakeup Serial Data
X109 Engine Harness (except Diesel) or Engine Chassis Harness (Diesel) to Instrument Panel Harness (NQF/NQH)
Is a 40 way connector my bad sry
You need this one
X109 Engine Harness (except Diesel) or Engine Chassis Harness (Diesel) to Instrument Panel Harness (except NQF/NQH)
Stillnotavett you are the MAN!
Finally the mystery
I don't need any of those 3 circuits so I can just wire the rest and cut off the connector.
BTW, Where ever did you find it?
One of the perks of being a Gm Service Technician my friend. lol
Stillnotavette- PM sent.
sorry to drag up an old thread but are you saying that B3 & B4 are also battery current sensors?
Hello, sorry to butt in on you thread, I'm a little confused, this same cable also goes to the tcm connector pin 11, to be on the same page neither wire is needed then right? I only ask because I am using the 5.3 with its 4l60
Thanks
Juan
=stillnotavett;202532]Does it look like this?
Note the RPO codes
X109 Engine Harness (except Diesel) or Engine Chassis Harness (Diesel) to Instrument Panel Harness (NQF/NQH)
B5 is BK/WH circuit # 451 it is a ground
B6 is OG Circuit # 1553 it is motor Contorl B
B8 is D-BU Circuit # 5985 It is Accessory wakeup Serial Data
X109 Engine Harness (except Diesel) or Engine Chassis Harness (Diesel) to Instrument Panel Harness (except NQF/NQH)
B5 is BK Circuit # 451 it is Ground (except MEX)
B6 is D-BU Circuit # 204 it is A/C Low Pressure Sensor Signal (C67/CJ2)
B8 is D-BU circuit # 5958 it is Accessory Wakeup Serial Data
Hello,is there a way I can find out which x109 connection I have without the knowing rpo codes,I don't have the glove box to the truck,thank you in advance.
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