Question about 2003 GMC Envoy

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Main control module on driver's side does not operate the driver side window or the other windows. Also, sometimes the driver's seat heats up. *** It was raining one day and I went to let up the windows and the switch seemed to short circuit and would not operate the windows from the main module. The three other windows work but have to be operated individually at their respective door. *** What is the problem? Does the entire module needs to be replaced?

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Check fuse& circuit breaker.

Posted on May 30, 2010

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On 2004 pontiac montana what does fuse 7 control


7-BATT MAIN 1
60A
Fuses: •
CIGAR/DLC/APO FRT
• CLUSTER BATT
• CTSY LAMP
• ON STAR
• PWR LOCK
• PWR MIRROR
• RAP RELAY
• RR PWR SCKT

look below for above listed componet's , pull those fuse's one at a time till arc stop's ,then you found your problem circuit . Do you know where the I/P fuse box is ?
Fuse Block- I/P
Right side of the I/P, in the right front door opening


Fuse Block-I/P Label
Fuse Block-I/P Application Table Fuse/Circuit Breaker
Rating
Description
BCM PRGRM
10A
Body Control Module (BCM)
ENHANCED EVAP/AWD
15A
Evaporative Emission (EVAP) Canister Vent Solenoid, Clutch Pump Check Valve
CIGAR/DLC/APO FRT
20A
Auxiliary Power Outlet-Front, Cigar Lighter, Data Link Connector (DLC)
CLUSTER/BATT
10A
Instrument Panel Cluster (IPC)
CRUISE
10A
Cruise Control Module (CCM), Cruise Control Release Switch, Cruise Control ON/OFF Switch
CTSY LAMP
10A
Body Control Module (BCM)
DRL
10A
Daytime Running Lamps (DRL) Control Module
HVAC/DIC/DRL/HEATED SEAT
10A
Air Temperature Actuator-Left, Air Temperature Actuator-Right, Daytime Running Lamps (DRL) Control Module, Driver Information Center (DIC), Mode Actuator, Rear Window Wiper/Washer and Multifunction Switch (Heated Seat Switch), Recirculation Actuator, Relay Block (Rear Window Defogger Relay)
ELC/TRAILER
25A
Auto Level Control (ALC) Air Compressor, Auto Level Control (ALC) Air Inflator Relay, Auto Level Control (ALC) Sensor
FRT HVAC HI BLWR
30A
Blower Motor Resistor Assembly
FRT WPR/WSHR
25A
Windshield Wiper Motor, Windshield Wiper/Washer Switch
HAZARD
15A
Turn Signal/Multifunction Switch
HEADLAMP
20A
Daytime Running Lamps (DRL) Control Module, Headlamp Dimmer Switch, Headlamp Switch
HTD MIRROR
10A
Outside Rearview Mirrors-Left, Right
HVAC/BLOWER
25A
HVAC Control Module
IGN1
10A
Body Control Module (BCM), Instrument Panel Cluster (IPC), Left Rear Side Door Actuator Control Module, Rear Object Sensor Control Module, Right Rear Side Door Actuator Control Module, Stop Lamp Switch
LH HEADLP HIGH
10A
Headlamp High Beam-Left
LH HEADLP LOW
10A
Headlamp Low Beam-Left
LH T/LP
10A
Tail Lamp-Left, Trailer Rear Wiring Harness
MALL/CLUSTER
10A
Body Control Module (BCM), Instrument Panel Cluster (IPC)
ON STAR
5A
Vehicle Interface Unit (VIU)
PASS KEY
10A
Theft Deterrent Control Module
PCM/ABS
10A
Electronic Brake Control Module (EBCM), Fuse Block-Underhood, Powertrain Control Module (PCM), Park/Neutral Position (PNP) Switch
PCM/CRANK
10A
Powertrain Control Module (PCM)
PCM/PASS KEY/CLUSTER
10A
Instrument Panel Cluster (IPC), Powertrain Control Module (PCM), Theft Deterrent Control Module, Instrument Panel Cluster (IPC), Powertrain Control Module (PCM)
PWR LOCK
20A
Body Control Module (BCM)
PWR MIRROR
10A
Outside Rearview Mirror Switch
PWR QTR VENT
10A
Auto Level Control (ALC) Air Compressor, Auto Level Control (ALC) Sensor, Rear Quarter Window Switch
PWR/HEATED SEAT PSD
30A
Driver Seat Assembly, Passenger Seat Assembly
PWR SLDG DR
30A
Left Rear Side Door Actuator Control Module, Right Rear Side Door Actuator Control Module
PWR WDO
30A
Window Switch-Driver, Window Switch-Front Passenger
RAP RELAY
10A
Relay Block (RAP Relay)
RH HEADLP HIGH
10A
Headlamp High Beam-Right
RH HEADLP LOW
10A
Headlamp Low Beam-Right
RR HVAC/TEMP CONT
25A
Air Temperature Actuator-Auxiliary, Blower Motor-Auxiliary, Blower Motor Relay-Auxiliary, HVAC Control Assembly-Auxiliary, Mode Actuator-Auxiliary
RR DEFOG/ HTD MIRROR
30A
Window Defogger Relay-Rear
RR FOG LP
10A
Fog Lamp Relay-Rear
RR PWR SCKT
20A
Auxiliary Power Outlet-Rear
RH T/LP
10A
Tail Lamp-Right, Trailer Rear Wiring Harness
RR WPR/WSHR
20A
Window Wiper Motor-Rear, Rear Window Wiper/Washer and Multifunction Switch
SIR
15A
Inflatable Restraint Sensing and Diagnostic Module (SDM)
STOP LAMP
15A
Stop Lamp Switch
SWC BACKLIGHT
2A
Steering Wheel Controls-Left, Right
T/SIG
10A
Turn Signal Switch and Backup Lamp Relay

Jan 09, 2018 | Pontiac Cars & Trucks

1 Answer

Seat heater comes on by itself in 2004 yukon denali


Heated Seat Components
The heated seat system consists of the following components:
• Driver and passenger heated seat switches
• Driver and passenger seat back heater elements
• Driver and passenger seat cushion heater elements
• Driver and passenger seat back temperature sensors
• Driver seat module
• Driver door module
• Passenger door module
When there are modules involved in the operation of any componet that's acting up , the module's electronic's could be the culprit ! But without testing who's to say what the problem could be !
I would have it check for DTC'S
DTC B2425 or B2430
The driver and passenger seat heaters are controlled by the driver seat module. Power is supplied to the driver seat cushion and back heater elements through individual voltage supply circuits. Power is supplied to the passenger seat cushion and back heater elements through a common voltage supply circuit. All of the driver and passenger seat heater elements are grounded by the driver seat module through individual low side drive control circuits. The heater element control circuits are pulse width modulated to ground by the driver seat module in order to control the seat temperatures by regulating the current flow through the heater elements.
DTC B2435 or B2440
The driver seat module relies on inputs from thermistors installed in the driver and passenger seat backs to control heated seat temperatures. The thermistors are 2-wire sensors supplied with a 5-volt referenced signal circuit and low reference circuit from the driver seat module. Resistance through the thermistors varies with temperature causing the heated seat sensor signal circuit voltage levels to decrease as the seat back temperatures rise.
Install a scan tool.
Start the engine.
Turn the heated seat ON.
With a scan tool, observe the Heated Seat Sensor parameter in the data list for the driver seat module.
Does the scan tool indicate that the heated seat sensor parameter is within the specified range?
0.078-4.94 V

Dec 08, 2016 | GMC Yukon Denali Cars & Trucks

1 Answer

My power seats and only the power windows on right side quit working on my 2007 silverado classic lt1500 I replaced the circuit breakers already and it did not fix the problem


Does you truck have Memory Seats ? There are 2 options of power seat systems available in full size trucks. The first is 6 way driver and passenger power seats without memory. The second is an 8-way driver seat plus 4-way lumbar with memory, heat and optional cool function.
If you replaced the circuit breaker , did you check for B+ voltage at the switch ? If you have memory seats there is a control module that is in the mix.
For the power windows same thing here ,the BCM - body control module is involved .A factory Tech 2 scan tool is still the best tool to use ,checking data parameters .
The switch for the front passenger power window has 2 positions UP and DOWN, and it's position is a direct input into the PDS. Upon receiving a request for power window operation (switch activation), the PDS supplies voltage to the power window motor right front up or down circuit and grounds the opposite and the power window motor runs to drive the window UP or DOWN.
The front passenger power window can also be operated from the driver master control. The front passenger window switch on the driver master control has 2 positions UP and DOWN and it's position is a direct input into the DDS. Upon receiving a request for front passenger power window operation, the DDS transmits a GMLAN message indicating the changed switch position. When the PDS receives this message, the PDS supplies voltage to the power window motor right front up or down circuit and grounds the opposite and the power window motor runs to move the window UP or DOWN.
GMLAN - is a data bus communication network that vehicle modules talk together on.
Rear Passenger Power Window Operation (RPO A31/AN3/DL3)
The body control module (BCM) monitors the window UP/DOWN command from the DDS. When the rear window UP or DOWN command is received, the BCM sends a signal to the appropriate rear window switch. The rear window switches continuously monitor the up and down signal circuits, if no function is being commanded, the signal voltage is at approximately B+ voltage. If the UP or DOWN function is commanded, the BCM signal voltage drops approximately 5 volts and the appropriate rear window switch will then command the window in the UP or DOWN direction.
Your best bet would be to take your truck to a GM dealer !
Your best bet

If

Nov 04, 2015 | Cars & Trucks

1 Answer

Just got the heater core replaced in my 2005 chevy avalanche. Got it back and rear windows didnt work. They tried resetting the body control module but after no electric al stuff worked. Moonroof, heated...


Body Control Module (BCM)
On the lower left side of the I/P below the steering column is it's location .
The two rear passenger doors have there own switches. Each of the switches contain a power window up and down relay. A switch activation alone can control the up and down functions of the rear windows. However the BCM, upon receiving a Class 2 message from the DDM, can control the set of relays which will activate the rear window motors.
The BCM has nothing to do with operation of the moon roof , nor with the heated seats
Heated Seat Components
The heated seat system consists of the following components:
• Driver and passenger heated seat switches
• Driver and passenger seat back heater elements
• Driver and passenger seat cushion heater elements
• Driver and passenger seat back temperature sensors
• Driver seat module
• Driver door module
• Passenger door module
Nor does it have anything to do with 4X4 .
There is a main wiring harness behind the instrument panel ,an connectors . maybe one didn't get connected all the way . Hard to say what the problem could be without checking their work . Connection problems at the BCM . have to know how these systems work ,the BCM is what GM call's the power mode master , it receives inputs from the ignition switch
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle the PMM is the body control module (BCM). The BCM uses 3 signals from the ignition switch. These are the Ignition 0, Ignition 1, and Accessory.
To determine the correct power mode the BCM uses:
• The state of these signals
• The sequence of switch closures received by the BCM
• The status of the engine run flag

The BCM will then send messages on the serial data network to some of the module's an other's receive a wake up voltage signal via a BCM controlled relay . ign 1 or ign 3 . Very complex if you don't know about this stuff .
Fail-safe Operation
Since the operation of the vehicle systems depends on the power mode, there is a fail-safe plan in place should the body control module (BCM) fail to send a power mode message. The fail-safe plan covers modules with discrete ignition signal inputs as well as those modules using exclusively serial data control of power mode.
Serial Data Messages
The modules that depend exclusively on serial data messages for power modes stay in the state dictated by the last valid BCM message until they receive the engine status from the powertrain control module (PCM). If the BCM fails, the modules monitor the serial data circuit for the engine run flag serial data. If the engine run flag serial data is true, indicating that the engine is running, the modules fail-safe to Run. In this state the modules and their subsystems can support all operator requirements. If the engine run flag serial data is false, indicating that the engine is not running, the modules fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
Discrete Ignition Signals
Those modules that have discrete ignition signal inputs also remain in the state dictated by the last valid BCM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, B+, the modules will fail-safe to the RUN power mode. If the discrete ignition input is not active, open or 0 voltage, the modules will fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.

Who did the work ? Do they have a factory Tech 2 scan tool ? Will the BCM communicate ?

Jan 07, 2018 | Cars & Trucks

1 Answer

2002 gmc envoy windows roll down and up by themselves


The power windows on your vehicle are controlled by an electronic control module , as are the power mirrors !
Power Window System Components
The power window system consists of the following components:
• Driver door module (DDM)
• Passenger door module (PDM)
• Body control module (BCM)
• LR power window switch
• RR power window switch
• Window up and window down relays in each of the rear passenger window switches
• Window lockout switch
• Reversible power window motors in each of the doors (circuit breaker protected)
• LT DOOR CB 25A (System power for left rear window)
• RT DOOR CB 25A (System power for right rear window)

Your best bet , take your vehicle to a qualified repair shop.

Jan 30, 2018 | 2002 GMC Envoy

1 Answer

2004 Envoy XUV heated seats do not work on both sides. I press the button and the lights come on, when i release the button the lights go out. I checked the fuses mentioned in the articles on this site but...


If other functions such as window controls and power seat controls are normal, here are some possibilities;
1) Circuit Breaker #8 in rear fuse panel
2) Defective Driver Memory Seat Module (under driver's seat)
3) Break in data lines between Driver's Memory Seat Module and Drivers Door Module
4) Fuse 23 & 6 in rear fuse panel

Nov 13, 2012 | 2004 GMC Envoy

1 Answer

2008 Buick Enclave; front passenger, no power to window and lock controls, and no power to passenger side mirror. Additionally, passenger heated seats do not operate. From driver seat control, I cannot...


Do you know anything about automotive electronic's ? Serial data Communication network ? Electronic module's inside the vehicle doors , communicate commands ! No relay ,no fuse .
If the passenger mirror is selected and a direction switch is activated, the DDM sends a serial data message to the PDS indicating that the passenger mirror was selected and the direction to be commanded. The PDS will then supply battery voltage and ground to the appropriate control circuits for the direction selected.
DDM - driver's door module

Door Lock System Components
The power door lock system consists of the following components:
• Driver door module (DDM)
• Passenger door module (PDM)
• Door lock relay--Located in the instrument panel (I/P) fuse block and controls the locking of the rear doors.
• Door unlock relay--Located in the I/P fuse block and controls the unlocking of the rear doors
• Body control module (BCM)
• IP BEC
• Reversible door lock actuators in each door

Power Window System Components
The power window system consists of the following components:
• Driver door module (DDM)
• Body control module (BCM)
• Passenger door module (PDM)
• Rear door power window switches
• Power window motors in each of the doors (circuit breaker protected)

Your best bet , take it to a qualified repair shop that has a diagnostic scanner that can pull code's an view input data form these systems . There is one circuit breaker for the window's an fuse's for the lock's . I would think a data network problem . But that would be a guess , without testing anything is possible on these .

Dec 27, 2017 | 2008 Buick Enclave

1 Answer

I have a 2008 Chevrolet Silverado 1500, extended cab, automatic truck.......PROBLEM, the drivers side has a power seat, it will not move in any direction and the passenger side front and rear power windows...


How to diagnose this problem ? Viewing wiring diagrams to see what all is invovled in these electrical circuit's , check power supply's an ground connection's using a DMM - digital multimeter !
What type power seat's ? does it have memory ,heated an cooled etc ?
Power Seats System Description and Operation
There are 2 options of power seat systems available in full size trucks. The first is 6 way driver and passenger power seats without memory. The second is an 8-way driver seat plus 4-way lumbar with memory, heat and optional cool function. While the passenger has 8-way power seats with heat and optional cool function. For the driver memory seat operation, refer to Memory Seats Description and Operation. Power seats without memory are completely controlled through the power seat switch. Battery voltage is supplied to the power seat switch through the power seat circuit breaker. While the seat adjuster switches are in an inactive state the switch contacts are closed to the power seat switch ground circuit. When a power seat switch is pressed to an active state the switch contact is closed to the battery voltage supply circuit. Each seat adjuster motor is controlled by the power seat switch through 2 motor control circuits. The seat adjuster motors are bidirectional and the direction of adjuster motor rotation is determined by which of the adjuster motor control circuits is switched to battery voltage while the other remains grounded.

If it has memory seat's there is a control module !
Battery voltage is supplied to the driver seat module through a 25 A circuit breaker. The driver seat module supplies the seat adjuster switch assembly with a battery positive reference voltage. While the seat adjuster switches are in an inactive state the switch contacts are closed to the adjuster switch common circuit.
Both right side windows have a seperate power supply from the left side window's ,has RT DOORS circuit breaker CB1 - 25amp. location left instrument panel fuse block . Circuit breaker's very rarely fail .Do the door lock's work on that side of the vehicle ? The windows won't work with their own switche's ?
The DDS controls the passenger window through a GMLAN message to the PDS. When a power window switch is activated in the up or down positions the PDS supplies power and ground to the window motor control circuits to drive the window motor in the required direction. Prior to activating a power window motor the PDS will supply the control circuit with a low current bias voltage in order to determine that a short to ground condition does not exist, and during window motor operation the PDS continues to monitor the motor current to verify proper window motor operation. (Scan tool support is available for this system)
Check PDM fuse 4 15 amp ,this supply's B+ voltage to the DOORLOCK/WINDOW switch passenger side . Check for broken wires inside the flex boot from the body to the passenger door .

Nov 18, 2017 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

1999 cadillac seville sts driver side master control pannel dead


The same circuit breaker feeds the driver door as well as the passengers doors . The wires inside the rubber boot from the body to the door are probably broke ,power or ground wire .Or the door module is bad . Are your familiar with electronic control modules ? The door functions ,windows , lock's , memory etc... are controlled by DDM - driver door module .
Door Control System Operation
This vehicle has five modules capable of performing door system control functions. Vehicle door system components (windows, locks, mirrors, etc.) are controlled directly by these modules. There is a door module located inside of each vehicle door:
• Driver Door Module
• Passenger Door Module
• LH Rear Door Module (LRDM)
• RH Rear Door Module (RRDM)
• LH Front Power Window Switch
Simple Bus Interface (SBI)
Each Door Module communicates with the other Door Modules on the SBI. The driver door module is the only Door Module that is capable of communicating over the Class 2 Data Line as well as the SBI.
Driver Door Module
The driver door module directly controls the LH Front door lock actuator, power window motor and the outside rear view mirror. The driver door module sends and receives messages received from the LH Front Power Window Switch to the passenger door module, LRDM and RRDM modules over the Simple Bus Interface (SBI) line. Also, the driver door module sends and receives message from other vehicle system modules via the Class 2 Data Line.
Pulling the door panel off an checking B+ voltage and ground for the module would be good for you to do , since you probably don't have a $6,000 factory Tech 2 scan tool to see if the DDM is communicating .
The driver door module has two main power feeds (high and low current), and two main grounds. The low power feed (battery 1) is used to provide power for the driver door module's logic and internal driver operation. The high power feed (battery 2) is used to provide power for systems that draw higher amounts of current (motors, lights, etc.). Operating current at the driver door module's battery should not exceed 3.0 amperes at battery 1, and 7.5 amperes (for 2 seconds) at battery 2 while the driver door module is awake, and 2.5 milliamps when the driver door module is asleep. For most driver door module functions, the driver door module will operate properly with a system voltage of 9.0-16.0 volts. If system voltages exceed 16.0 volts the driver door module will provide protection by disabling certain functions that may damage due to higher than normal system voltages.

What kind of manual do you have ? The info above is from a factory repair manual .
The fuse's ,circuit breaker for the door module are located in the rear fuse box , not under hood . PWR WDO circuit breaker 30 amp. , DRVMDL fuse 10 amp. The rear fuse box is located under the back seat . Watch this video ,different type vehicle but probably the same problem .
Dodge Grand Caravan No Power Window No Power Locks CAN Trouble

Jul 23, 2017 | 1999 Cadillac Seville

1 Answer

My side mirros dont work


The exterior mirrors:
  • are controlled by power controls on the LH front door trim panel.
  • are of a foldaway design.
  • may contain turn signal indicators.
  • may be heated when the heated back window glass is activated.
  • may have a programmable recall memory option.
Driver Seat Module
The power driver seat and power exterior mirrors are controlled by the driver seat module (DSM) only when the vehicle is equipped with the programmable/recall memory option.
---------------------------------------------------------------------
Power Exterior Mirror Operation
The power exterior mirrors are controlled by the DSM and are operational all the time, whether the ignition switch is on or off. Using the power exterior mirror switch, the driver can adjust the driver and passenger exterior mirrors four ways.
-----------------------------------------------------
Visual Inspection Chart Mechanical Electrical
  • Exterior mirror(s)
  • Interior mirror
  • Central junction box (CJB) fuse
  • Circuitry
  • Exterior mirror control switch
  • Exterior mirror motor
  • Interior mirror
  • Driver seat module (DSM)
  • Memory set switch


----------------------------------------------------------------------------------


  1. If the vehicle is equipped with memory exterior mirrors and the concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) located beneath the instrument panel. Select the vehicle to be tested from the diagnostic tool menu.
    • Check to make sure the program card is correctly installed.
    • Check the connections to the vehicle.
    • Check the ignition switch position.
-------------------------------------------------------------------------------------
  • The mirrors are inoperative
  • Circuitry.
  • Central junction box (CJB) fuse.
  • Exterior mirror control switch.


Apr 07, 2009 | 2003 Lincoln Navigator

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