electrical
Power Seat Motor
for 2007 Ram 3500 5.9L I6 Cummins · 4WD
Difficulty
Moderate
Time
1.7 h
Tools
8
Steps
15
✓Fact-checked. Built from OLP's spec database, then independently fact-checked line by line with every correction applied. Master-tech sign-off by Chris Hackleman is queued. Cross-check torque values against the factory manual, and stop if anything looks unsafe. How our data is made.
Remove and replace a faulty power seat motor on the driver or passenger seat. This procedure covers accessing the seat frame, disconnecting wiring, and installing a new motor.
Warnings
⚠Disconnect negative battery cable and wait 2 minutes before beginning work to prevent airbag deployment and electrical shorts
⚠Power seats are heavy and require support when tilted or moved - have an assistant available or use appropriate supports
ℹ️Take photos of wiring connections before disconnecting to ensure proper reassembly
Tools required
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Parts
- Power seat motor (specify which function: fore/aft, height, recline, or lumbar) × 1 — Use OEM specification
- Wiring harness connector (if damaged) × 1 — Use OEM specification
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Preparation
- Park vehicle on level surface and engage parking brake
- Disconnect negative battery cable and wait 2 minutes
- Move seat to full forward position for easier access to rear mounting bolts
- Lower seat to lowest position if replacing height motor
- Gather all tools and replacement parts
Procedure
- 1Remove seat track cover trimUse trim panel removal tools or a flat blade screwdriver wrapped in cloth to carefully pry up the plastic covers on both sides of the seat track. These covers snap into place and may have accumulated debris. Set covers aside in a clean area.
- 2Disconnect seat wiring harnessLocate the main wiring harness connector under the seat, typically on the inboard side near the front. Press the locking tab and pull connector apart. If equipped with heated seats or additional features, there may be multiple connectors - photograph and label each before disconnecting.
- 3Remove seat mounting boltsLocate the four seat track mounting bolts (two front, two rear) that secure the seat assembly to the floor. Use the correct socket to remove all four bolts. Support the seat assembly as you remove the final bolts. Verify the exact fastener size before beginning; these are commonly 15mm hex-head bolts on this platform.⚠Seat assembly weighs approximately 60-80 lbs - use proper lifting technique or have assistance available
- 4Remove seat from vehicleWith all mounting bolts removed and wiring disconnected, carefully lift and tilt the seat assembly to remove it from the vehicle. Maneuver through the door opening - you may need to recline the seatback. Place seat on a clean, padded work surface with the bottom facing up.
- 5Access power seat motorWith seat inverted on work surface, locate the defective power seat motor. The seat typically has separate motors for fore/aft movement, height adjustment (front and rear), recline, and possibly lumbar support. Identify the specific motor requiring replacement by tracing the drive cables or gears to the non-functioning adjustment.
- 6Disconnect motor wiring and drive cablesDisconnect the electrical connector from the defective motor by pressing the locking tab. Note the orientation of the motor for installation. If the motor drives a cable system, release the cable from the motor output gear by removing the retaining clip or rotating the cable housing to unlock it. For gear-driven systems, note the gear mesh position.
- 7Remove motor mounting fastenersRemove the motor mounting bolts or screws securing the motor to the seat frame. Note the count and fastener type as you remove them, as these vary by seat type and motor function. Support the motor as you remove the last fastener to prevent it from dropping and damaging other components.
- 8Remove defective motorCarefully extract the motor from its mounting location. If the motor is stuck, check for additional retaining clips or fasteners. Inspect the mounting area for debris, corrosion, or damage to the seat frame. Clean the mounting surface with a wire brush if needed.
- 9Install new power seat motorPosition the new motor in the mounting location, ensuring it matches the orientation of the original motor. Align the output gear or cable drive with the seat mechanism. Verify the motor sits flush against the mounting surface before installing fasteners.
- 10Secure motor and connect drive mechanismInstall and hand-tighten all motor mounting fasteners, then tighten in a cross pattern to ensure even seating. Reconnect the drive cable by inserting it into the motor output and securing the retaining clip, or mesh the drive gears ensuring proper alignment. Verify the mechanism moves freely without binding.
- 11Reconnect motor electrical connectorConnect the electrical connector to the new motor, ensuring it clicks into place and is fully seated. Verify the connector lock is engaged. Clean any corrosion from connector terminals if present.
- 12Reinstall seat assembly in vehicleCarefully lift the seat assembly and maneuver it back into the vehicle through the door opening. Position the seat tracks over the four mounting holes in the floor. Start all four mounting bolts by hand to ensure proper thread engagement before tightening any bolts.
- 13Tighten seat mounting boltsTighten all four seat mounting bolts in a cross pattern (front left, rear right, front right, rear left) to ensure even seating of the seat tracks. Torque to factory specification (commonly around 40 ft-lbs on this platform); confirm the exact value in the service manual before final tightening. Verify seat is secure with no movement.
- 14Reconnect seat wiring harnessConnect all wiring harness connectors under the seat, ensuring each clicks into place and locks properly. Route wiring away from moving components and pinch points. Verify no wires are trapped or kinked.
- 15Reinstall trim covers and test operationSnap the seat track trim covers back into place on both sides. Reconnect the negative battery cable. Test all power seat functions to verify proper operation of the new motor and all other seat adjustments (power seats are typically powered directly and do not require the ignition to be on).
Reassembly
- Ensure all wiring is properly routed and secured away from moving seat components
- Verify all four seat mounting bolts are properly torqued and seat is firmly secured to floor
- Confirm all trim covers are properly seated and secure
- Test all seat adjustment functions multiple times to ensure reliable operation
Verification
- With ignition ON, operate the repaired seat function through full range of motion multiple times
- Verify seat moves smoothly without binding, unusual noise, or hesitation
- Test all other power seat functions to ensure no wiring was damaged during repair
- Check that seat is firmly mounted with no movement or play at mounting points
- Verify all trim panels are secure and properly installed
Related trouble codes on this vehicle
Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.
P0485Cooling Fan Power/Ground CircuitP0550Power Steering Pressure Sensor Circuit MalfunctionP0551Power Steering Pressure Sensor Circuit Range/PerformanceP0635Power Steering Control CircuitP0636Power Steering Control Circuit LowP0685ECM/PCM Power Relay Control Circuit /OpenP0686ECM/PCM Power Relay Control Circuit LowP0690ECM/PCM Power Relay Sense Circuit HighP0880TCM Power Input SignalP0881TCM Power Input Signal Range/PerformanceP0890TCM Power Relay Sense Circuit Signal Stuck OnP0891TCM Power Relay Sense Circuit Signal Stuck Off
Chasing one of these codes and not sure which part is guilty? Ask a master mechanic about YOUR car →