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2004 GMC Sierra Alarm/Remote Start Wiring


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josegon 
Member - Posts: 7
Member spacespace
Joined: October 16, 2004
Location: United States
Posted: October 17, 2004 at 12:07 AM / IP Logged  
Iam trying to install a remote start/alarm on a 2004 GMC sierra. I need to get the wiring diagram. Could somebody provide some help locating the diagram as well as providing any tips. First time doing remote stater. I've done an alarm before. Thanks
snguyen 
Silver - Posts: 281
Silver spacespace
Joined: October 09, 2003
Location: United States
Posted: October 17, 2004 at 12:20 AM / IP Logged  
SIERRA PICK-UP F/S      2002-2004
WIRE COLORSLOCATION
12 VOLTS CONSTANTRED (x2)IGNITION SWITCH HARNESS
IGNITION 1PINK (+)IGNITION SWITCH HARNESS
IGNITION 2WHITE (+)IGNITION SWITCH HARNESS
ACCESSORY /HEATER BLOWER ORANGE (+)IGNITION SWITCH HARNESS
STARTERYELLOW (+)IGNITION SWITCH HARNESS
KEY SENSELIGHT GREEN ( - )IGNITION SWITCH HARNESS
PARKING LIGHTS ( - )GRAY/BLACK BROWN  PLUG pin B2 at BCM
DOME LIGHT  ( - )GRAY/BLACK (Drivers door), BLACK/ WHITE (Passengers door)EACH DOOR MODULE in DOOR *2
DOME LIGHT SUPERVISION USE DOMELIGHT WIRES
POWER DOOR LOCKLIGHT BLUE LIGHT BLUE PLUG at BCM *3
POWER DOOR UNLOCKWHITE   with FACTORY KEYLESS *SEE DIAGRAM*
TACH SENSORWHITE  (AC)INSTRUMENT CLUSTER or PCM  *4
BRAKEWHITE  ( + )AT BRAKE SWITCH
HORNBLACK  ( - ) or BLACK / YELLOWat STEERING COLUMN HARNESS
FACTORY DISARMLIGHT GREEN (-)DRIVER DOOR MODULE in DOOR
FACTORY ANTI-THEFTPASSLOCK 2Requires part #791 bypass
 NOTES:

UPDATE:  TAILGATE LOCKING SYSTEM:

GM Full-size trucks from 2003 and up have a Multiplex Door Locking System, this means the MOTOR wires WILL NOT be accessible in the interior kick panels. When installing a TAILGATE LOCK, the motor wires can only be found INSIDE the DRIVERS or PASSENGERS door at the motor.

*1 - The BCM is located behind the drivers side of the dash. It has (6) plugs on the BCM with the PURPLE plug on the back.

*2 - On BASE model trucks the door trigger wires are in the LIGHT BLUE plug at BCM, pins B4 Drivers door and A5 Passengers door. On 4 door trucks the Left Rear door trigger wire is LIGHT BLUE/BLACK, pin A3, the Right Rear door is LIGHT GREEN/ BLACK, pin A2. They are in the PURPLE plug at the BCM. Use all wires and diode isolate.

*3 - On BASE model trucks the lock wire is LIGHT BLUE ( - )  and  the unlock wire is WHITE ( - ). They are in the LIGHT BLUE plug at the BCM.

*4 - The PCM (Power Control Module) is in the left front of the engine compartment to the left of the fan shroud. The tach wire is in the GREEN plug, pin 10. For tach you can also go to any of the ignition coils and use the wire that is NOT PINK, BLACK or BROWN.  Wait-to-Start wire is BLUE in instrument cluster or PCM.

snguyen 
Silver - Posts: 281
Silver spacespace
Joined: October 09, 2003
Location: United States
Posted: October 17, 2004 at 12:21 AM / IP Logged  

GMC

Sierra Pickup

2003-2004

Remote Starter  Wiring Colors and Notes

Function

 

Vehicle  Color

Location

Start:

 

Yellow (+)

Ignition switch harness

Ignition  #1:

 

Pink (+)

Ignition switch harness*

Ignition #2:

 

White (+)

Ignition switch harness

Ignition  #3:

 

N/A

Ignition switch harness

Accessory:

 

Orange (+)

Ignition switch harness

Brake  Light:

 

White (+)

Brake pedal switch

Tach  Signal:

 

White (AC)

Instrument cluster or PCM**

Parking Lights:

 

Gray/Black (-)

Brown plug at BCM***

Headlights:

 

OEM Alarm  Disarm:

 

Lt.Green (-)

Drivers door module in door

OEM Alarm  Arm:

 

Diesel  Glow Plug:

 

Clutch  Bypass Wire:

 

Notes:

 *This vehicle is equipped with GM's PASSLOCK II Anti-Theft System. Use Universal Alarm Bypass Module # 2x402 where X can be any number. You can also use vehicle specific bypass module part # 23545. **The Powertrain Control Module (PCM) is in the left front of the engine compartment to the left of the fan shroud. The tach wire is in the green plug in pin # 10. ***The Body Control Module (BCM) is under the driver side dash.

GMC

Sierra Pickup

2003-2004

Alarm and Keyless  Entry Wiring Colors and Notes

Function

 

Vehicle  Color

Location

Constant  +12 Volts:

 

Red (+)

Ignition switch harness

Starter  Kill:

 

Yellow (+)

Ignition switch harness

Ignition  +12 Volts:

 

Pink (+)

Ignition switch harness*

Dome  Lights/Superv:

 

OEM Horn:

 

BLACK / YELLOW (-)

Steering column harness

Power  Lock:

 

See Note

****

Power  Unlock:

 

See Note

****

Trunk  Release:

 

N/A

Alarm  Input Wire:

 

Notes:

****Use vehicle specific door lock module part # 23561. On base model trucks the lock wire is Lt.Blue(-) and unlock wire is white(-). They are in the Lt.Blue plug at the Body Control Module (BCM).
josegon 
Member - Posts: 7
Member spacespace
Joined: October 16, 2004
Location: United States
Posted: October 21, 2004 at 8:58 PM / IP Logged  

Thanks for the quick responce. I checked all wiring readings with a digital meter. On white wire from Ignition switch harness ad found out that the reading for ing 2 is actually orange wire wich has a 12+ at ON/RUN and 12+ at start. The question is if it should be used for Ignition switch harness instead of white wire wich has 12+ at Acc, 12 + at ON/RUN and 12+ at start. Another question is if this vehicle has the parking lights are ground swithched or a +12 volt swithched.

Thanks,

JG

JWorm 
Platinum - Posts: 2,208
Platinum spacespace
Joined: December 11, 2002
Location: New Hampshire, United States
Posted: October 21, 2004 at 9:05 PM / IP Logged  
lights are negative....white needs to be powered as an ignition....and orange as accessory. Most wiring charts say the brown wire must also be connected as a second accessory, but I have found it is usually not needed.
josegon 
Member - Posts: 7
Member spacespace
Joined: October 16, 2004
Location: United States
Posted: October 21, 2004 at 9:09 PM / IP Logged  

Sorry for the confusion I guess I clicked the mouse I typed somewhere else. Here is the right wording...

Thanks for the quick response. I checked all wiring readings with a digital meter. On white wire from Ignition switch harness I found out that the reading for ing 2 is actually the orange wire which has a +12 at ON/RUN and +12 at start. The question is if the orange should be used for ing 2 instead of white wire which has +12 at Acc, +12 at ON/RUN and 12+ at start. Another question is if this vehicle has the parking lights ground switched or a +12 volt switched.

Thanks,

JG

josegon 
Member - Posts: 7
Member spacespace
Joined: October 16, 2004
Location: United States
Posted: October 22, 2004 at 3:33 PM / IP Logged  

I checked all wiring readings with a digital meter. On white wire from Ignition switch harness I found out that the reading for ing 2 is actually the orange wire which has a +12 at ON/RUN and +12 at start. The question is if the orange should be used for ing 2 instead of white wire which has +12 at Acc, +12 at ON/RUN and 12+ at start. Another question is if this vehicle has the parking lights ground switched or a +12 volt switched.

Thanks

JWorm 
Platinum - Posts: 2,208
Platinum spacespace
Joined: December 11, 2002
Location: New Hampshire, United States
Posted: October 22, 2004 at 7:51 PM / IP Logged  
You can keep asking the question over and over but the answer is still the same. I already answered you a couple posts up. You are either metering something wrong, your meter reacts too slow to changes, or you don't understand the difference between ignition and accessory.

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