2004 Pontiac Grand Prix remote start

I have installed a Scytek remote starter and a Fortin GM-SL on a 2004 Pontiac Grand Prix. Now all the gages on the dash will go out. They will work when you first start the car but after you start going they will quit. Does anyone have any Ideas? I have check all of my connections, doesn't seem to be any thing loose. The car will be OK then just stop, It seems like there is some sort of interference and the gages will cut in and out.

does this only happen when remote started  will it still do it if only used the key? not sure wehe and what you conected the wireing to follow i know to be good chek againt yours and let me know any new info.

12volts  red (50A), red (40A)  +  back of fuse box, passenger dash Starter  yellow  +  ign harn or BCM, conn. C1, pin 21 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Second Starter  N/A     Ignition  pink  +  ign harn or BCM, conn. C1, pin 22 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. There are two pink wires in the BCM plug that meter as ignition. To verify that the correct wire is being energized for remote start, slide the key in the ignition key cylinder and then activate remote start. If the key in ignition warning chime comes on, then the correct wire is being energized. Second Ignition  N/A     Third Ignition  N/A     Accessory  brown  +  ign harn or BCM, conn. C1, pin 23 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Second Accessory  N/A     Keysense  lt. green  -  ign harn or BCM, conn. C1, pin 40 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Power Lock  RED / black  -  BCM, conn. C2, pin 2 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Power Unlock  ORANGE / black  -  BCM, conn. C2, pin 11 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Lock Motor  gray  5wi  BCM, conn. C2, pin 52 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Unlock Motor  tan  5wi  BCM, conn. C2, pin 46 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Parking Lights+  brown  +  front of fuse box, passenger dash Parking Lights-  BROWN / white  -  BCM, 18 pin plug, pin 8 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Hazards  tan  -  BCM, 18 pin plug, pin 16 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Turn Signal(L)  use hazards wire     Turn Signal(R)  use hazards wire     Reverse Light  lt. green  +  BCM, conn. C2, pin 42 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Door Trigger  see notes  -  BCM, conn. C2 Notes: The driver door trigger is gray/black in pin 26, the front passenger door is BLACK/ white in pin 17, the left rear door is lt. blue/black in pin 7, and the right rear door is lt. GREEN/ black in pin 5. Use all four wires and diode isolate each. The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Dome Supervision  gray/black  +  BCM, conn. C1, pin 43 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Trunk/Hatch Pin  RED / black  -  BCM, conn. C2, pin 3 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Hood Pin  N/A     Trunk/Hatch Release  lt. blue  +  BCM, conn. C2, pin 45 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Power Sliding Door  N/A     Factory Alarm Arm  lt. green  -  BCM, conn. C2, pin 22 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Factory Alarm Disarm  purple  -  BCM, conn. C2, pin 24 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Disarm No Unlock  see factory alarm disarm     Tachometer  white  ac  ignition control module, pin E Notes: The ignition control module is on top of the engine towards the passenger side. Wait to start  N/A     Brake Wire  white  +  BCM, conn. C2, pin 30 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Parking Brake  ORANGE / black  -  BCM, conn. C2, pin 9 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Horn Trigger  brown  -  BCM, 18 pin plug, pin 9 Notes: The BCM (Body Control Module) is below the driver side dash to the left of the steering column. Memory Seat 1  N/A     Memory Seat 2  N/A     Memory Seat 3  N/A     Interface Module: Category: Immobilizer Bypass Required: Yes Type: PASS-Key III Part #: 556UW Alternate Part1 #: DesignTech 20402 Alternate Part2 #: DesignTech 29402 Notes:

I have talk to tech support and they do have record of any problems. I have looked over all the other post on this web site and didn't find same problem. I have noticed that there are a lot of different problems with the 04/05 pontiac grand prix. I asked the dealers service center for help and he said that my power source is interfering with the BCM. What I was wondering where is a good spot to get constant and ignition power? I am using the BCM for ignition as stated in the wiring, but the dealership said I shouldn't do that.

Replacing was the only answer?