Question about 1999 Cadillac DeVille

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Power seat does not work at all, checked fuses, changed module, still nothing but it has power going in/ any suggestions?

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Sounds like the motor that moves the seat

Posted on Mar 25, 2011

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Drivers power seat does not work and stopped working with the seat too far forward


When the seat is adjusted to the stop it can destroy the fuse, though sometimes it is nothing more than the supply wiring plug being pulled from it's mating part. Most electric seats can be adjusted manually if the power fails. The vehicle owner's handbook should tell you how.

I suggest you wind it away from the stop before checking the fuses and replacing as necessary. If you find nothing or that doesn't work further investigation will be needed.

Feb 05, 2016 | Seat Cars & Trucks

2 Answers

Driver control switch not working, passenger side switch locks work, but not windows. Drivers control nothing works and fuses are still good. Any suggestions?


Power control modules under the seats(usually) and part of the wiring. Not sure what vehicle this is? These can be expensive to repair depending on the vehicle. Check to make sure carpets are not soaked and the connections to the modules are not rusted. Disconnect battery first so you do not short out any electrical connections.

Mar 19, 2015 | Cars & Trucks

1 Answer

2003 Cadillac STS door and truck lock quit working


I checked all the fuses and relays and all are in good shape???????
Did you check the correct one's ,that's the question ? And did you use a voltmeter or test light to check across the correct fuse's ? And how did you check the relay's ????? Videos on youtube on how to test a relay ! And using a wiring diagram or power flow diagram that shows all componets of the none working systems ., Plus you need to know how the thing's work . Data communication network is involved in the working of these thing's , Data messages from module to module !

The body control system consists of the following 3 modules:
• The Dash Integration Module (DIM)
• The Instrument Panel Module (IPM)
• The Rear Integration Module (RIM)
Rear Integration Module (RIM)
The various RIM inputs and outputs are described in the corresponding functional areas as indicated on the RIM electrical schematics.
The RIM functions include the following:
• Automatic level control
• CIGAR relay control
• Class 2 communication requiring RIM interaction
• Content theft deterrent
• Fuel door control
• Fuel level sensor input
• Heated seat control
• HVAC blower control
• LK/CYL relay control
• Park brake relay control
• Rear defog relay control
• Rear park assist chime control
• Retained accessory power (RAP) relay control
• Reverse relay control
• Transmission shift inhibit
• Trunk release relay control
• Various controls for the interior lamps

Just looking at fuse's and relay's isn't enough ! Hooking up a factory scan tool an checking for DTC'S - diagnostic trouble codes in all the vehicle control modules is always the first step . Which fuse boxes did you check ? Do you know there is a fuse box under the back seat ?
Fuse Block - Rear
Left rear of the passenger compartment, under the rear seat !
The vehicle is equipped with power door locks. Each lock actuator is powered and controlled by the door module mounted in the individual door, but the rear integration module (RIM), which is the master control for the door lock system, determines when the lock functions are permitted. The RIM receives and examines the requested lock function from the individual door modules, or from the remote function actuator (RFA) via the class 2 serial data circuit. The RIM also examines the transmission shift selector position and the ignition switch position information available over the Class 2 serial data circuits. If the RIM determines that a lock or unlock function is permitted, it sends a class 2 message back to the individual door modules commanding them to perform that Lock or Unlock function.
Your best bet , take it to the dealer !

Jun 06, 2017 | 2003 Cadillac Seville STS

1 Answer

Sunroof does not work


Power you need to have power even if the fuse is good you need power, it comes from a sunroof/moon roof module,this module is located under driver seat

Mar 10, 2012 | 1998 Volkswagen Passat

1 Answer

2003 bravada heated seats and elec. windows don't work after improper hookup of jumper cables. What to check ?


Find the drivers door module and the memory seat module. All the orange wires should have power to them. If they don't than you need to go back and check the fuses. The LGM/DSM and DDM fuse for sure in the rear fuse block.

Since nothing is working I suspect that the modules may have shut down. Since they communicate with each other it would probably be a good start to scan these with a multi-function scan tool to 1. see if there are codes and clear them and 2. to see if they are still capable of communication.

There will likely be codes stored in every module. Clearing all of the codes would be a good start.

Jan 15, 2012 | 2003 Oldsmobile Bravada

1 Answer

1997 ford explorer power seats AND power windows wont work after replacing fuse


CHECK YOUR WIRES UNDER THE SEAT WHERE YOU WERE CLEANING, PROBABLY SCRAPED OR CUT A WIRE OR CONNECTION. THAT WOULD SEEM LIKE A GOOD PLACE TO START.

Jan 03, 2012 | Ford Explorer Cars & Trucks

1 Answer

1999 Ford Explorer Power Drivers Seat doesn't work. When I push and of the switches, it doesn't go up, down, forward, backward, nothing. I check the fuses under the hood and didn't find any blown. I...


Maybe you problem is with the switch, or check if power seat circuit has the regular fuse or rather one of those thermal ones.
Passenger compartment fuse panel
The fuse panel is located on the left hand side of the instrument panel facing the drivers side door.

Position 18 25A - Drivers Unlock Relay, All Unlock Relay, All Lock Relay, Power Seats

May 28, 2017 | 1999 Ford Explorer

2 Answers

1999 Cadillac Deville Driver side power seat not working


No fuse.These seats are protected with relays and a seat module.The module is under the drivers seat.There are 3 connectors and it would be hard to check all these wires for power to the motors.First look under the seat and make sure none of the connectors came apart under the seat by something that might have been left or rolled under it.The 2 main ones you can check are the connector 2 terminal C and connector 3 terminal A.C is a black wire which is ground and A is a red wire which is the feed power wire.Connector 2 is green and 3 is black.If the ground and power wires are good then you could have a bad drivers seat module.What I would do is go to the salvage yard and find a used module to try.Good luck.

Dec 07, 2009 | 1999 Cadillac DeVille

1 Answer

Power mirrors, driver power seat, adjustable pedals all don't work... checked fuses and all ok... Any suggestions?


it sounds like the driver seat module. It controls all of these items.
buy used at car-part.com. look on page with * for lowest price.
buy new at discount at tascafordparts.com

  • The memory mirror is inoperative
  • Driver seat module (DSM).
  • Circuitry.
  • CJB fuse 3 (7.5A).
  • Exterior mirror motor.
  • Mirror control switch.


  • The memory seat is inoperative
  • Circuitry.
  • Seat control switch.
  • Seat track.
  • DSM.
  • PDJB Fuse 109 (30A).
  • Power seat motor.


  • Adjustable brake pedal does not operate correctly — does not operate using the adjustable pedal switch
  • Battery junction box (BJB) fuses:
    • 109 (30A).
  • Circuitry.
  • Switch.
  • Adjustable pedal motor.
  • Driver Seat Module (DSM

Oct 02, 2009 | 2003 Ford Expedition

3 Answers

2003 Chevrolet Tahoe DIC


Check the wiring that goes through the door and see if they are pinched and or broken...Its the part between the door where it closes to the body..It is covered by a rubber piece and it can be pulled back to inspect it.Also check the wires on the floor of the truck that connects to the seat .Its on the floor board under the seat and or where ever you can see them..Hope this helps you and Have A great day...

Apr 01, 2009 | 2006 Chevrolet Tahoe

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