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Do you know how to view wiring diagrams an use a voltmeter to test automotive electrical circuit's ? Fuel gauge is a separate problem , has nothing to do with windows & locks . GM had instrument cluster problems , 2003 to 2006 . Bad stepper motors inside the cluster . These stepper motors control the gauge . How to repair GM Instrument Cluster Speedometer Gauge Stepper
Do all the power windows an locks not work ? Checking power an ground for the driver main door switch would be a good place to start . Also wire's like to break inside the flex boot from the body to the driver's door , no battery power to main switch . But before jumping the gun , looking at a wiring diagram should be done , to see what all is involed in those systems . Free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. Year ,make ,model an engine . Under system click on body & accessories , then under subsystem click on power windows or lock's , doesn't matter . Find the problem for one will fix both . Click the search button then the blue link. Looking at the diagram for power windows I see that electronic's are involved . Driver door module an BCM - body control module . The driver door module is part of the switch Assembly . Checking the orange wire for battery voltage to the door module is where i would start , no power , open circuit . Electric Testing Techniques You Need to Know
Relay maybe . free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model an engine size . Under system click Body & accessories ,then under subsystem click on rear window defogger . Click the search button then the blue link .Looking at the diagram you will see three fuse's , a relay ,lighting control module , defroster switch . The switch is a input to the lighting control module , the lighting control module will supply a ground to the control side of the rear window defroster relay ,energizing the relay sending B+ power to the defroster grid.
PERFORM Self Test to retrieve Diagnostic Trouble Codes. If no DTCs retrieved, GO to Pinpoint Test C .
VISUAL INSPECTION CHART
Mechanical
Electrical
Front door power window regulator damaged.
Front window run damaged.
Front door window glass out of window run.
Front door window glass broken.
Lighting control module.
Driver door module.
Circuits open/shorted.
Loose, corroded connectors.
Damaged window regulator control switch.
Damaged window regulator electric drive.
Power distribution box Fuse D 40 for heated back window concern; Circuit Breaker 14 (20A), Circuit Breaker F (30A) or window regulator safety relay for power window concern.
If the inspection reveals obvious concerns that can be readily serviced, correct the concern before continuing with Inspection and Verification.
If the concern remains after the inspection, connect the Rotunda New Generation Star (NGS) Tester, 007-00500 or equivalent, to the data link connector (DLC) located beneath the instrument panel to perform DATA LINK DIAGNOSTICS test. If the NGS responds with NO RESPONSE/NOT EQUIPPED for the driver door module, go to Pinpoint Test A . If the NGS responds with NO RESPONSE/NOT EQUIPPED for lighting control module, go to Pinpoint Test B . If the DATA LINK DIAGNOSTICS test is passed for the driver door module and lighting control module, retrieve continuous DTCs and execute self test diagnostics for the driver door module and lighting control module to retrieve current DTCs.
If self test is passed and no DTCs are retrieved, go to Symptom Chart to continue diagnosis.
If DTCs are retrieved for the driver door module, go to the Driver Door Module (DDM) Diagnostic Trouble Code (DTC) Index to continue diagnosis. If DTCs are retrieved for the lighting control module, go to the Lighting Control Module (LCM) Diagnostic Trouble Code (DTC) Index to continue diagnostics.
If the driver door module cannot be accessed by the NGS tester, go to Pinpoint Test A . If the lighting control module cannot be accessed by the NGS, go to Pinpoint Test B .
Rotunda Service Bay Diagnostic System (SBDS®) 001-00001 may also be used to diagnose this system.
You'll need more then wiring diagrams ! A good scan tool for starters .
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What make , model an year vehicle ? Disconnecting the battery resets what ever controls the central locking system an power windows . Could be a control module of some kind or a sticking relay maybe . You in the states ? You could go to http://www.bbbind.com/free_tsb.html free wiring diagrams to see what controls these thing's . You mite also have modules on the vehicle checked for DTC'S - diagnostic trouble codes . Could have a BCM - body control module , GEM - generic electronic module etc....
start with the fuses replace it anyway or put a 12volt bulb in place of fuse , when its loading down it will shine bright , when normal it will not shine much at all.
be sure all connections to battery are working check for a second positive cable with a f useable link
The power windows are controlled by the Generic Electronic Module, also the wipers and interior lights go through this module, the problem is most likely the module itself, the module is behind the radio, but check the fuses , fuse #1 7.5A Power Mirror Switch, fuse #26 10A, power window relay, in the underhood box check the following: Fuse #4 20A** Power Windows
Looking at a wiring diagram ,the BCM has nothing to do with the cruise control . This vehicle has two different body control modules ,the (FEM) front electronic module an the (REM) rear electronic module . The power door locks are controlled by these two modules . The door lock switches are inputs to the (FEM) . The driver door lock is also controlled by the (FEM) . The right front and the rear door locks are controlled by the (REM) . The power windows are not controlled by these modules ,so it is not a faulty body computer . An where did you check codes ? Takes a factory or professional type scan tool to read these codes . No code reader , they just check PCM - engine codes . The power mirrors are not controlled by these modules either . Nor is the radio .
Looking at a wiring diagram i see the power mirror's and the power window share a common ground point G-305 , so does the rear radio controller ! (if your vehicle has one )
Buying an replacing parts is no way to fix these problems ! Using a wiring diagram and a DVOM - digital volt ohm meter to test the electrical circuits of these systems is the way to find the problem . Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine size . Then under system click on body an Accessorys , subsystem click power windows . Check for B+ voltage to the master window switch , check for a good ground .( Loaded circuit test ) Do you know what that means ? Watch these videos ! Electric Testing Techniques You Need to Know Voltage Drop Essentials TST Motor Age How To Read Wiring Diagrams Schematics Automotive
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