There's also something funky in (some of?) the GMPP fan controls, they will run relay fans but not anything variable speed.
There's also something funky in (some of?) the GMPP fan controls, they will run relay fans but not anything variable speed.
Tuner at PCMofnc.com
Email tuning!!!, Mail order, Dyno tuning, Performance Parts, Electric Fan Kits, 4l80e swap harnesses, 6l80 -> 4l80e conversion harnesses, Installs
Just an FYI, we got the ECM and stabbed it in and the car fired up right away! Thank you edcmat-l1!!!
Now this has created a new issue in that the ECM is reading a constant 158 mph which is
-preventing the fans from turning on and temps are excessive
-preventing the adaptive idle from turning on
For the GMPP OS, HPT did map the fan vs mph settings, including a max temp override (screenshot below), but they did NOT do this for the CTSV OS. If we log a request to map these...what are the chances they would do it?
EDIT: perhaps the 158 mph issue is that [ECM] 822 - Speed Output Type is not mapped either so the trans isn't sending the speed correctly over the CANbus. The GMPP OS has this set to VehSerial, no idea what the CTSV is using. The car is a manual, but the CTSV OS from from an auto (at least as far as I can tell from the VIN number 1G6DV5EPXB0149222).
fans.jpg
Last edited by Cringer; 04-20-2024 at 09:12 PM.
A standard approach will give you standard results.
My Tuning Software:
VVE Assistant [update for v1.5]
MAF Assistant
EOIT Assistant
Auto trans ECM OS can only read a VSS if it comes in over CAN, from an auto trans TCM. Only a true manual trans ECM OS can read a hardwired VSS going to the pins used in the OE manual trans car.
Last edited by Cringer; 04-21-2024 at 01:24 PM.
A standard approach will give you standard results.
My Tuning Software:
VVE Assistant [update for v1.5]
MAF Assistant
EOIT Assistant
2011 Camaro & Corvette but not CTS-V, either auto or manual. Unless the description is badly worded or I'm reading it wrong, that is for the output from the ECM to other modules, not the input from a sensor.
I'm not aware of anyone who has managed yet to get an auto OS to read a direct-wired VSS in a Gen 4. There's supposedly a trick with Gen Vs with the VSS DTCs but doesn't work with these.
A standard approach will give you standard results.
My Tuning Software:
VVE Assistant [update for v1.5]
MAF Assistant
EOIT Assistant
https://www.ebay.com/sch/i.html?_nkw...not-programmed
EDIT: or whatever service number is needed for the VIN you want to use, that one may be 09-10, you need to check it yourself
Last edited by blindsquirrel; 04-21-2024 at 06:04 PM.
I have several E67 manual trans OS's Erod, GMPP stock tunes.
GMPP_LS3 ERod_E67 - 12638778_Manual.hpt
430 hp engine only stock LS3-original.hpt
GMPP_376ci_E67 - 19211212_Manual.hpt
Last edited by TheMechanic; 04-21-2024 at 07:56 PM.
A standard approach will give you standard results.
My Tuning Software:
VVE Assistant [update for v1.5]
MAF Assistant
EOIT Assistant
I got him straight last night. Car is running and speedo is working right.
EFI specialist
Advanced diagnostics, tuning, emissions
HPtuners dealer and tech support
email=[email protected]
A standard approach will give you standard results.
My Tuning Software:
VVE Assistant [update for v1.5]
MAF Assistant
EOIT Assistant