: Are the 04-05 STS AWD and RWD wiring harnesses the same?



NorthernStar
08-09-11, 04:44 AM
If not what are the differences?

turnne
08-09-11, 08:31 AM
If not what are the differences?

I didn't think there was an 04 STS?



Warren

C&C
08-09-11, 12:27 PM
In '04, there was the outgoing model, the Seville SLS; so the '05 STS was all new (and would most certainly have a different wiring harness).

caddyfat2
08-09-11, 02:26 PM
In '04, there was the outgoing model, the Seville SLS; so the '05 STS was all new (and would most certainly have a different wiring harness).

What about the STS Seville?:hide: They made that in 04 but 05 brought in a brand new STS without the Seville designation.

chazglenn3
08-09-11, 02:57 PM
Nope...the only model available for the 2004 year was the Seville SLS. No STS was available that year.

caddyfat2
08-09-11, 04:47 PM
Nope...the only model available for the 2004 year was the Seville SLS. No STS was available that year.

Upon further checks I have come to see that you are correct, there was no 04 STS only SLS.
:thumbsup:

NorthernStar
08-10-11, 11:03 AM
The model year doesn't matter. I need to know if the LH2 Northstar wire harness from a STS is the same for the RWD and AWD models. I believe the engine is for a 2005.

NorthernStar
08-10-11, 04:59 PM
Bueller? Bueller?

EChas3
08-10-11, 10:25 PM
Members have posted that wiring harnesses do vary based on trim/equipment levels. I don't know if the AWD option is one such factor. It seems likely.

NorthernStar
08-11-11, 07:10 PM
I guess I'll have to find out for myself. I'm assuming the AWD runs off the existing ABS sensors and so the wiring is the same for all models, or at least that is what I am hoping.

ddalder
08-13-11, 03:34 PM
The wiring harness will vary depending on options such as (obviously) the engine. I can tell you for sure that they are different for cars with or without TT6/TT7/TT8 (HID versus non-HID vehicles) and also with or without F55 (magnetic ride control). K14 will be a factor (air quality sensor presence or absence). I can't say for sure what other options will affect the harness. This would take more digging.

If you're buying a new harness, either purchase it from the dealer specifically for your VIN or you'll need to do a lot of research to make sure you get the right one from a wrecker.

ddalder
08-13-11, 03:55 PM
Do doing a little more research, I have found seven different engine wiring harnesses for the 2005 4.6L (LH2) engine option.

Options that affect which is the correct harness are various combinations of the RPO's below:

V09 - Cooling System Powertrain, High Ambient Temp
V03 - Cooling System, Extra Capacity
F55 - Magnetic Ride Control
NV7 - Variable Effort Steering
K59 - Adaptive Cruise Control
V92 - Trailier Provisions
TT6/TT7/TT8 - Various HID Configurations

valjan1
08-14-11, 10:55 AM
These 2 cars are completly differents

ddalder
08-14-11, 11:58 AM
These 2 cars are completly differents
The question changed a little as the thread progressed and became focused on a 2005 MY engine.

1BadCadSTS
08-14-11, 02:11 PM
Technically there was a 04 Seville STS available for export (Canada) but there wasnt a US Seville STS to avoid confusion between it and the all new 05 RWD based STS.

NorthernStar
08-15-11, 03:01 AM
Do doing a little more research, I have found seven different engine wiring harnesses for the 2005 4.6L (LH2) engine option.

Options that affect which is the correct harness are various combinations of the RPO's below:

V09 - Cooling System Powertrain, High Ambient Temp
V03 - Cooling System, Extra Capacity
F55 - Magnetic Ride Control
NV7 - Variable Effort Steering
K59 - Adaptive Cruise Control
V92 - Trailier Provisions
TT6/TT7/TT8 - Various HID Configurations

This is great news as I'm not putting the engine in a Cadillac. I was worried the transmission control was intergrated into the design for each model (AWD/RWD) I was hoping, and am probably correct that the AWD simply uses the wheel speed sensors, which would also exist on the RWD model. It would be interesting to know if the variable valve timing relies on input from the transmission or if it operates from the ECM, with input from the TCM. I've had limited experience with CAN networks, but I hope I can mate up a 700R4 transmission to the Northstar using a stock harness.