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Seat System Chevrolet Chevy Express G2500

Seats 4 illustrations ~4074 words

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
Assist Handle to Seat back Screws5 N.m44 lb in
Front Seat Assembly to the Vehicle60 N.m44 lb ft
Hinge/Recliner Mechanism to the Seat Back Frame and Seat Cushion Frame Bolts32 N.m24 lb ft
Power Seat Adjuster Switch to Seat Cushion Screws2 N.m18 lb in
Rear Seat Rail to the Floor Nuts43 N.m32 lb ft
Rear Seat Risers to the Seat Frame Bolts55 N.m41 lb ft
Recliner Handle to Recliner Mechanism Screws2.5 N.m23 lb in
Recliner cable screws2 N.m18 lb in
Seat Adjuster to the Seat Cushion Frame Bolts25 N.m18 lb ft
Seat Adjuster to the Seat Riser45 N.m33 lb ft

Fastener Tightening Specifications

Driver Seat Schematics

For driver seat schematics refer to appropriate System Wiring Diagrams article.

Passenger Seat Schematics

For passenger seat schematics refer to appropriate System Wiring Diagrams article.

Scheme 1

Scheme 1: Power Seat Systems Component Views
Scheme 1: Power Seat Systems Component Views
CalloutComponent Name
1Seat Belt Switch - LF
2Inflatable Restraint Seat Position Sensor (SPS) Connector - Left (Light Duty)
3C307
4Seat Adjuster Switch - Driver (AG1)
5Seat Adjuster Switch Connector - Driver (AG1)
6Seat Motors Connector - Driver (AG1)
7S304 (AG1)
8Seat Motor - Forward/Rearward (AG1)
9Seat Motor - Front Tilt (AG1)
10Seat Motor - Rear Tilt (AG1)
11Inflatable Restraint Seat Position Sensor (SPS) - Left (Light Duty)

Scheme 2

Scheme 2
Scheme 2
CalloutComponent Name
1Seat Adjuster Switch - Front Passenger (AG2)
2Inflatable Restraint Seat Position Sensor (SPS) Connector - Right (Light Duty)
3C306
4Inflatable Restraint Seat Position Sensor (SPS) - Right (Light Duty)
5Seat Motor - Rear Tilt (AG2)
6Seat Motor - Front Tilt (AG2)
7Seat Motor - Forward/Rearward (AG2)
8Seat Motors Connector - Front Passenger (AG2)
9Seat Adjuster Switch Connector - Front Passenger (AG2)

Seat Adjuster Switch - Driver Connector End Connector Part Information 12066386 8-Way F Pin Grip Connectors (GY) Pin Wire Color Circuit No. Function A D-GN/BK 921 Driver Seat Rear Vertical Motor Down Control B D-GN 920 Driver Seat Rear Vertical Motor Up Control C BK 450 Ground D D-BU 918 Driver Seat Horizontal Motor Forward Control E D-BU/BK 919 Driver Seat Horizontal Motor Rearward Control F RD/WH 3540 Battery Positive Voltage G BN/BK 923 Driver Seat Front Vertical Motor Down Control H BN 922 Driver Seat Front Vertical Motor Up Control

Seat Adjuster Switch - Front Passenger (AG2) Connector End Connector Part Information 12066386 8-Way F Pin Grip Connectors (GY) Pin Wire Color Circuit No. Function A D-GN/BK 927 Passenger Seat Rear Vertical Motor Down Control B D-GN 926 Passenger Seat Rear Vertical Motor Up Control C BK 450 Ground D D-BU 924 Passenger Seat Horizontal Motor Forward Control E D-BU/BK 925 Passenger Seat Horizontal Motor Rearward Control F RD/WH 3540 Battery Positive Voltage G BN/BK 929 Passenger Seat Front Vertical Motor Down Control H BN 928 Passenger Seat Front Vertical Motor Up Control

Seat Motors - Driver Connector End Connector Part Information 12015344 6-Way F Metri-Pack 280 Series (BK) Pin Wire Color Circuit No. Function A D-GN 920 Driver Seat Rear Vertical Motor Up Control B D-GN/BK 921 Driver Seat Rear Vertical Motor Down Control C D-BU 918 Driver Seat Horizontal Motor Forward Control D D-BU/BK 919 Driver Seat Horizontal Motor Rearward Control E BN 922 Driver Seat Front Vertical Motor Up Control F BN/BK 923 Driver Seat Front Vertical Motor Down Control

Seat Motors - Front Passenger (AG2) Connector End Connector Part Information 12015344 6-Way F Metri-Pack 280 Series (BK) Pin Wire Color Circuit No. Function A D-GN 926 Passenger Seat Rear Vertical Motor Up Control B D-GN/BK 927 Passenger Seat Rear Vertical Motor Down Control C D-BU 924 Passenger Seat Horizontal Motor Forward Control D D-BU/BK 925 Passenger Seat Horizontal Motor Rearward Control E BN 928 Passenger Seat Front Vertical Motor Up Control F BN/BK 929 Passenger Seat Front Vertical Motor Down Control

Diagnostic Starting Point - Seats

Begin the system diagnosis by reviewing the system Description and Operation. Refer to Power Seats System Description and Operation . Reviewing the Description and Operation information will help you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the Description and Operation information will also help you determine if the condition described by the customer is normal operation.

Symptoms - Seats

IMPORTANTReview the system description and operation in order to familiarize yourself with the system functions. Refer to: Power Seats System Description and Operation

Visual/Physical Inspection

  1. Inspect for aftermarket devices which could affect the operation of the power seat. Refer to «Checking Aftermarket Accessories»(/chevrolet/chevy-express-g2500/1996-2012/remont/body-electrical/#wiring-systems-diagnostic-information-and-procedures__checking-aftermarket-accessories) in Wiring Systems.
  2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

  1. «Power Seat Inoperative»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system__power-seat-inoperative)
  2. «Power Seat Does Not Move Forward/Rearward»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system__power-seat-does-not-move-forwardrearward)
  3. «Power Seat Does Not Tilt Forward»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system__power-seat-does-not-tilt-forward)
  4. «Power Seat Does Not Tilt Rearward»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system__power-seat-does-not-tilt-rearward)

Power Seat Inoperative

StepActionYesNo
Schematic Reference: Driver Seat Schematics or Passenger Seat Schematics Connector End View Reference: Power Seat Systems Connector End Views
1Did you review the Power Seats System Description and Operation?Go to Step 2Go to Power Seats System Description and Operation
2Operate the Power Seat System. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor Connections in Wiring SystemsGo to Step 3
3Connect a test lamp between battery positive voltage supply circuit at the power seat switch connector and a good ground. Does the test lamp illuminate?Go to Step 4Go to Step 5
4Connect a test lamp between the ground circuit the inoperative seat switch connector and a battery positive voltage. Does the test lamp illuminate?Go to Step 8Go to Step 7
5Test for an open or short to ground in the battery positive voltage circuit. Refer to Wiring Repairs in Wiring Systems. Did you find and correct the condition?Go to Step 10Go to Step 6
6Test all of the power seat motor control circuits for a short to ground. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition?Go to Step 10
7Repair the open in the ground circuit. Refer to Wiring Repairs in Wiring Systems. Did you find and correct the condition?Go to Step 10
8Inspect for poor connections at the harness connector of the power seat switch. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition?Go to Step 10Go to Step 9
9Replace the inoperative power seat switch. Refer to Seat Switch Replacement - Power . Did you find and correct the condition?Go to Step 10
10Operate the system to verify the repair. Did you correct the condition?System OKGo to Step 3

Power Seat Inoperative

Power Seat Does Not Move Forward/Rearward

StepActionYesNo
Schematic Reference: Driver Seat Schematics or Passenger Seat Schematics Connector End View Reference: Power Seat Systems Connector End Views DEFINITION: This table assumes that all mechanical linkage and drivers are free from obstruction and not binding. This also assumes that all other directions are operational.
1Did you review the Power Seats System Description and Operation and perform the necessary inspections?Go to Step 2Go to Power Seats System Description and Operation
2Operate the Power Seat System. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor Connections in Wiring SystemsGo to Step 3
3Disconnect the horizontal motor. Connect a test lamp between the horizontal motor control circuits. Operate the power seat switch to the forward and rearward positions. Did the test lamp illuminate for each switch position?Go to Step 6Go to Step 4
4Test the control circuits of the horizontal motor for a open or short to ground. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition?Go to Step 9Go to Step 5
5Inspect for poor connections at the harness connector of the power seat switch. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition?Go to Step 9Go to Step 8
6Inspect for poor connections at the harness connector of the horizontal motor. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition?Go to Step 9Go to Step 7
7Replace the horizontal motor. Refer to Seat Adjuster Replacement - Front . Did you complete the replacement?Go to Step 9
8Replace the power seat switch. Refer to Seat Switch Replacement - Power . Did you complete the replacement?Go to Step 9
9Operate the system to verify the repair. Did you correct the condition?System OKGo to Step 3

Power Seat Does Not Move Forward/Rearward

Power Seat Does Not Tilt Forward

StepActionYesNo
Schematic Reference: Driver Seat Schematics or Passenger Seat Schematics Connector End View Reference: Power Seat Systems Connector End Views DEFINITION: This table assumes that all mechanical linkage and drivers are free from obstruction and not binding. This also assumes that all other directions are operational.
1Did you review the Power Seats System Description and Operation and perform the necessary inspections?Go to Step 2Go to Power Seats System Description and Operation
2Operate the Power Seat System. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor Connections in Wiring SystemsGo to Step 3
3Disconnect the front vertical motor. Connect a test lamp between the front vertical motor control circuits. Operate the power seat switch to the front up and front down positions. Did the test lamp illuminate for each switch position?Go to Step 6Go to Step 4
4Test the control circuits of the front vertical motor for a open or short to ground. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition?Go to Step 9Go to Step 5
5Inspect for poor connections at the harness connector of the power seat switch. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition?Go to Step 9Go to Step 8
6Inspect for poor connections at the harness connector of the front vertical motor. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition?Go to Step 9Go to Step 7
7Replace the front vertical motor. Refer to Seat Adjuster Replacement - Front . Did you complete the replacement?Go to Step 9
8Replace the power seat switch. Refer to Seat Switch Replacement - Power . Did you complete the replacement?Go to Step 9
9Operate the system to verify the repair. Did you correct the condition?System OKGo to Step 3

Power Seat Does Not Tilt Forward

Power Seat Does Not Tilt Rearward

StepActionYesNo
Schematic Reference: Driver Seat Schematics or Passenger Seat Schematics Connector End View Reference: Power Seat Systems Connector End Views DEFINITION: This table assumes that all mechanical linkage and drivers are free from obstruction and not binding. This also assumes that all other directions are operational.
1Did you review the Power Seats System Description and Operation and perform the necessary inspections?Go to Step 2Go to Power Seats System Description and Operation
2Operate the Power Seat System. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor Connections in Wiring SystemsGo to Step 3
3Disconnect the rear vertical motor. Connect a test lamp between the rear vertical motor control circuits. Operate the power seat switch to the rear up and rear down positions. Did the test lamp illuminate for each switch position?Go to Step 6Go to Step 4
4Test the control circuits for the rear vertical motors for a open or a short to ground. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition?Go to Step 9Go to Step 5
5Inspect the poor connections at the harness connector of the power seat switch. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition?Go to Step 9Go to Step 8
6Inspect the poor connections at the harness connector of the rear vertical motor. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition?Go to Step 9Go to Step 7
7Replace the rear vertical motor. Refer to Seat Adjuster Replacement - Front . Did you complete the replacement?Go to Step 9
8Replace the power seat switch. Refer to Seat Switch Replacement - Power in Wiring Systems. Did you compete the replacement?Go to Step 9
9Operate the system to verify the repair. Did you correct the condition?System OKGo to Step 3

Power Seat Does Not Tilt Rearward

Removal Procedure

  1. Disable the Sir. Refer to «SIR Disabling and Enabling Zone 3»(/chevrolet/chevy-express-g2500/1996-2012/remont/airbag/#supplemental-inflatable-restraint-system) or «SIR Disabling and Enabling Zone 5»(/chevrolet/chevy-express-g2500/1996-2012/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
  2. If seat is equipped with power seat motors, disconnect the electrical connector from the seat assembly.
  3. Remove the nuts (3) that retain the seat assembly to the vehicle.
  4. Remove the front seat assembly from the vehicle.

Installation Procedure

  1. Position the front seat assembly into the vehicle.
  2. Install the nuts (3). Tighten: Tighten the nuts to 60 N.m (44 lb ft).
  3. Connect the electrical connector to the seat assembly, if equipped with power seat motors.
  4. Enable the SIR. Refer to «SIR Disabling and Enabling Zone 3»(/chevrolet/chevy-express-g2500/1996-2012/remont/airbag/#supplemental-inflatable-restraint-system) or «SIR Disabling and Enabling Zone 5»(/chevrolet/chevy-express-g2500/1996-2012/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
  1. Remove the front seat from the vehicle. Refer to «Seat Replacement»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  2. Remove the seat cushion cover and pad. Refer to «Seat Cushion Cover and Pad Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  3. Remove the bolts (7) retaining the seat back hinge / recliner mechanisms (6) to the seat cushion frame. Refer to «Seat Back Hinge/Recliner Mechanism Replace - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  4. Remove the bolts (4) retaining the seat cushion frame to the adjuster.
  5. Remove the power seat switch bracket (2), if equipped.
  1. Position the power seat switch bracket (2) to the seat cushion frame, if equipped.
  2. Install the screws (3) to retain the power seat switch bracket. Tighten: Tighten the screws to 2 N.m (18 lb in).
  3. Install the bolts (4) retaining the seat cushion frame to the adjuster.
  4. Install the bolts (4) to retain the seat cushion frame to the adjuster. Tighten: Tighten the screws to 25 N.m (18 lb ft).
  5. Install the bolts (7) to retain the seat cushion frame.
  6. Install the bolts (7). Tighten: Tighten the bolts to 32 N.m (24 lb ft).
  7. Install the seat cushion cover and pad. Refer to «Seat Cushion Cover and Pad Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  8. Install the front seat into the vehicle. Refer to «Seat Replacement»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .

Scheme 3

Scheme 3: Removal Procedure
Scheme 3: Removal Procedure
  1. If equipped with a power seat adjuster, raise the seat to the full up position.
  2. Remove the front seat from the vehicle. Refer to «Seat Replacement»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  3. Remove the seat back cover enough to expose the recliner mechanism bolts (2,7). Refer to «Seat Back Cover and Pad Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  4. Remove the recliner bolts (2,7).
  5. Remove the seat back (1) from the seat assembly.
  6. Remove the seat cushion from the seat adjuster assembly (4). Remove the recliner handle. Refer to «Seat Back Recliner Handle Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) . Remove the power seat adjuster switch, if equipped. Refer to «Seat Switch Replacement - Power»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) . Remove the bolts securing the seat cushion frame (3) to the adjuster assembly (4).
  7. Release the seat cushion J channel retainers from the seat cushion frame.
  8. Release the hook and loop strips that retain the seat cushion cover (1) to the seat cushion pad (2).
  9. Remove the seat cushion cover from the foam pad.
  10. Remove the foam pad (2) from the cushion frame (3).

Scheme 4

Scheme 4: Installation Procedure
Scheme 4: Installation Procedure
  1. When replacing a seat cushion pad (2) on a seat equipped with a power adjuster, remove the perforated section (9) on the front of the cushion pad (2).
  2. Position the foam pad (2) to the seat cushion frame (3).
  3. Position the seat cushion cover (1) to the foam pad (2).
  4. Engage the J channel retainers to secure the seat cushion cover (1) to the seat cushion frame (3).
  5. When replacing a seat cushion cover on a seat equipped with a power seat adjuster proceed with the following steps: Locate the opening (1) for the power seat switch within the bracket, through the cover. Using a razor blade make a "X" cut (2) within the opening of the switch bracket.
  6. Install the power seat switch. Refer to «Seat Switch Replacement - Power»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  7. Locate the position of the recliner mechanism rod (6) through the cushion cover.
  8. Make a small "X" cut just large enough for the recliner rod (6) to go through.
  9. Slip the cover over the recliner mechanism rod (6).
  10. Install the recliner handle. Refer to «Seat Back Recliner Handle Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  11. Position the seat back to the seat cushion assembly.
  12. Install the bolts (3,7). Tighten: Tighten the bolts to 32 N.m (24 lb ft).
  13. Position the seat assembly to the seat adjuster assembly (4).
  14. Install the bolts to secure the seat assembly to the adjuster (4). Tighten: Tighten the bolts to 25 N.m(18 lb ft).
  15. Install the seat into the vehicle. Refer to «Seat Replacement»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  1. Remove the assist handle if equipped. Refer to «Assist Handle Replacement»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  2. Release J channel retainers at the bottom edge of the seat back cover (1).
  3. Remove the armrest. Refer to «Armrest Replacement - Front Seat»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  4. Release the hook and loop strips that retain the seat back cover (1) to the seat back foam pad (2).
  5. Working from side to side, lift the seat back cover (1) from the foam pad (2).
  6. Peel the seat back foam pad (2) away from the seat back frame.
  7. Remove any residue left from the foam pad or glue from the seat back frame.
  1. Using hot melt glue or equivalent, glue the seat back foam pad onto the seat back frame.
  2. Working from side to side, install the seat back cover (1) over the foam pad (2).
  3. Install the armrest to the seat back. Refer to «Armrest Replacement - Front Seat»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  4. Engage the hook and loop strips in order to retain the seat back cover (1) to the seat back foam pad (2).
  5. Engage the J. channel retainer at the bottom edge of the seat back cover (1).
  6. Install the assist handle if equipped. Refer to «Assist Handle Replacement»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  1. Remove the seat from the vehicle. Refer to «Seat Replacement»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  2. Remove the seat back cover and pad. Refer to «Seat Back Cover and Pad Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  3. Remove the bolts (2,8) from the recliners on the right and left side.
  4. Remove the seat back frame.
  1. Position the seat back frame to the seat assembly.
  2. Install the bolts (2,8) to the recliners on the right and left side. Tighten: Tighten the bolts (2,8) to 32 N.m (24 lb in).
  3. Install the seat back cover and pad. Refer to «Seat Back Cover and Pad Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  4. Install the seat in the vehicle. Refer to «Seat Replacement»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .

The front seat back recliner mechanism is mounted to the inboard side of the seat.

  1. Remove the seat from the vehicle. Refer to «Seat Replacement»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  2. If removing the recliner mechanism remove the seat back recliner handle. Refer to «Seat Back Recliner Handle Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  3. Remove the seat cushion cover enough to access the bolts that retain the hinge or recliner mechanism (6) to the seat cushion frame. Refer to «Seat Cushion Cover and Pad Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  4. Remove the seat back cover enough to access the bolts (2,8) that retain the hinge or recliner mechanism to the seat back. Refer to «Seat Back Cover and Pad Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  5. Remove the bolts (2,8) that retain the hinge/recliner mechanism to the seat back frame.
  6. Remove the bolts (3,7) that retain the hinge/recliner mechanism to the seat cushion frame.
  7. Remove the hinge/recliner mechanism from the seat assembly.
  1. Position the hinge/recliner mechanism (6) to the seat assembly.
  2. Install the bolts (2,8) to retain the hinge/recliner mechanism (6) to the seat back frame. Tighten: Tighten the bolts to 32 N.m (24 lb ft).
  3. Install the bolts (3,7) to retain the hinge/recliner mechanism (6) to the seat cushion frame. Tighten: Tighten the bolts to 32 N.m (24 lb ft).
  4. Install the front seat back cover. Refer to «Seat Back Cover and Pad Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  5. Install the front seat cushion cover. Refer to «Seat Cushion Cover and Pad Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  6. Install the seat back recliner handle if recliner mechanism was removed. Refer to «Seat Back Recliner Handle Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  7. Install the seat to the vehicle. Refer to «Seat Replacement»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  1. Remove the screw that retains the seat back recliner handle to the seat back recliner.
  2. Remove the seat back recliner handle from the seat back recliner.
  1. Install the seat back recliner lever to the seat back recliner.
  2. Install the screw that retains the seat back recliner lever. Tighten: Tighten the screw that retain the seat back recliner lever to 2 N.m (18 lb in).
  1. Remove the front seat assembly from the vehicle. Refer to «Seat Replacement»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  2. Remove the nuts (2) that retain the seat riser (3) to the seat adjuster (1).
  3. Remove the front seat assembly from the seat riser.
  1. Position the front seat riser into the vehicle.
  2. Install the nuts in order to retain the seat riser to the vehicle. Tighten: Tighten the nuts to 60 N.m (44 lb ft).
  3. Position the front seat assembly to the seat riser.
  4. Install the seat adjuster nuts (2).
  5. Install the nuts (2) in order to retain the seat adjuster (1) to the seat riser (3). Tighten: Tighten the nuts (2) to 45 N.m (33 lb ft).
  6. Install the front seat assembly to the vehicle. Refer to «Seat Replacement»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  1. Raise the seat to the full UP position, if equipped with power seats.
  2. Disconnect the electrical harness (6) from the power seat motors, if equipped.
  3. Remove the nuts (3) retaining the seat adjuster (2) to the seat riser (4).
  4. Remove the front seat and the seat adjuster from the seat riser.
  5. Remove the bolts retaining the seat adjuster to the seat cushion frame (1).
  6. Remove the seat adjuster (2) from the seat.
  1. Position the seat adjuster (2) to the seat cushion frame (1).
  2. Install the bolts to retain the seat adjuster (2) to the seat cushion frame (1). Tighten: Tighten the bolts to 25 N.m (18 lb ft).
  3. Position the seat cushion (1) and the seat adjuster (2) to the seat riser (4).
  4. Install the nuts (3) to retain the seat adjuster to the seat riser. Tighten: Tighten the nuts (3) to 45 N.m (33 lb ft).
  5. Connect the electrical connectors to the power seat motors, if equipped.
  1. Remove the screws that retain the power seat adjuster switch (5) to the seat cushion (1).
  2. Remove the power seat adjuster switch from the seat cushion.
  3. Disconnect the electrical connector from the power seat adjuster switch.
  4. Remove the power seat adjuster switch from the vehicle.
  1. Install the power seat adjuster switch (5) to the vehicle.
  2. Connect the electrical connector to the power seat adjuster switch.
  3. Install the power seat adjuster switch to the seat cushion (1).
  4. Install the screws in order to retain the power seat adjuster switch to the seat cushion. Tighten: Tighten the screws to 2 N.m (18 lb in).
  1. Release the bottom edge of the seatback cover. Refer to «Seat Back Cover and Pad Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  2. Use a small bladed tool in order to release the clip (1) that retains the armrest to the seatback (2).
  3. Pull the armrest (3) from the seatback.
  1. Install the retaining clip (1) to the seatback (2).
  2. Ensure that the retaining clip is fully seated.
  3. Install the armrest (3) to the seatback.
  4. Press on the armrest in order to engage the armrest with the retaining clip in the seatback.
  5. Secure the bottom edge of the seatback cover. Refer to «Seat Back Cover and Pad Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  1. Remove the screws (3) that retain the assist handle to the seatback (1).
  2. Remove the assist handle (2) from the seatback.
  1. Install the assist handle (2) to the seatback (1).
  2. Install the screws (3) that retain the assist handle to the seatback. Tighten: Tighten the screws to 5 N.m (44 lb in).
  1. Rotate the locking pin (3) at the rear of the seat riser out of the retainer.
  2. Pull the locking pin (3) out from the rear of the seat riser.
  3. Stow the locking pin in the hole provided at the rear of the seat riser (2).
  4. Lift the seat up and out of the floor rails.
  5. Remove the seat from the vehicle.
  1. Position the seat into the vehicle.
  2. Align the seat attaching points with the slots in the floor rail.
  3. Push the seat forward in the rail to lock the front of the seat risers onto the slots on the inside of the floor rail.
  4. Remove the locking pin (3) from the stored position at the rear of the seat riser (2).
  5. Locate the hole in the floor rail at the rear of the seat riser (2) and insert the locking pin.
  6. Rotate the locking pin (3) forward into the retaining clip.
  1. Remove the rear seat from the vehicle. Refer to «Seat Replacement - Rear Bench»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  2. Remove the seat cushion cover and pad. Refer to «Seat Cushion Cover and Pad Replacement - Rear»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  3. Remove the seat belt buckles. Refer to «Seat Belt Buckle Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/restraints-control-systems/#seat-belt-system) in Seat Belts.
  4. Remove the lower anchor bolt for the center seat belt retractor, if equipped. Refer to «Seat Belt Replacement - Center Rear»(/chevrolet/chevy-express-g2500/1996-2012/remont/restraints-control-systems/#seat-belt-system) in Seat Belts.
  5. Remove the bolts retaining the seat back hinges to the seat cushion frame.
  6. Remove the seat cushion frame.
  1. Position the seat cushion frame.
  2. Install the bolts that retain the seat back hinges to the seat cushion frame in the locations noted during disassembly. Tighten: Tighten the bolts to 30 N.m (22 lb ft).
  3. Install the lower anchor bolt for the center seat belt retractor, if equipped. Refer to «Seat Belt Replacement - Center Rear»(/chevrolet/chevy-express-g2500/1996-2012/remont/restraints-control-systems/#seat-belt-system) in Seat Belts.
  4. Install the seat belt buckles. Refer to «Seat Belt Buckle Replacement - Front»(/chevrolet/chevy-express-g2500/1996-2012/remont/restraints-control-systems/#seat-belt-system) in Seat Belts.
  5. Install the seat cushion cover and pad. Refer to «Seat Cushion Cover and Pad Replacement - Rear»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system)
  6. Install the rear seat into the vehicle. Refer to «Seat Replacement - Rear Bench»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  1. Remove the rear seat from the vehicle. Refer to «Seat Replacement - Rear Bench»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  2. Remove the seat riser. Refer to «Seat Riser Replacement - Rear»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  3. Release the J channel fasteners securing the seat cushion cover to the seat cushion frame.
  4. Release the hook and loop fasteners.
  5. Remove the seat cushion cover from the seat cushion pad.
  6. Remove the seat cushion pad from the seat cushion frame.
  1. Position the seat cushion pad to the seat cushion frame.
  2. Position the seat cushion cover to the seat cushion pad.
  3. Engage the hook and loop fasteners.
  4. Engage the J channel fasteners.
  5. Install the seat riser. Refer to «Seat Riser Replacement - Rear»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  6. Install the rear seat into the vehicle. Refer to «Seat Replacement - Rear Bench»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  1. Remove the armrest from the seat back. Refer to «Armrest Replacement - Rear Seat»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  2. Remove the center seat belt retractor, if equipped. Refer to «Seat Belt Replacement - Center Rear»(/chevrolet/chevy-express-g2500/1996-2012/remont/restraints-control-systems/#seat-belt-system) in Seat Belts.
  3. Release the J channel Fastener at the bottom edge of the seat back cover (3).
  4. Release the hook and loop strips that retain the seat back cover to the seat back foam pad (2).
  5. Working from side to side, carefully lift the seat back cover from the foam pad.
  6. Remove the foam pad (2) from the seat back frame (1).
  1. Position the foam pad (2) to the seat back frame (1).
  2. Working from side to side, install the seat back cover (3) over the foam pad (2).
  3. Engage the hook and loop strips that retain the seat back cover to the seat back foam pad.
  4. Engage the J channel fastener at the bottom edge of the seat back cover.
  5. Install the center seat belt retractor, if equipped. Refer to «Seat Belt Replacement - Center Rear»(/chevrolet/chevy-express-g2500/1996-2012/remont/restraints-control-systems/#seat-belt-system) in Seat Belts.
  6. Install the armrest to the seat back. Refer to «Armrest Replacement - Rear Seat»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  1. Remove the rear seat from the vehicle. Refer to «Seat Replacement - Rear Bench»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  2. Remove the seat back cover and pad. Refer to «Seat Back Cover and Pad Replacement - Rear»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  3. Remove the right and left bolts that retain the seat back frame to the seat back hinges.
  4. Remove the seat back frame.
  1. Install the seat back frame.
  2. Install the bolts that retain the seat back frame to the seat back hinges in the locations noted during disassembly. Tighten: Tighten the bolts to 30 N.m (22 lb ft).
  3. Install the seat back cover and pad. Refer to «Seat Cushion Cover and Pad Replacement - Rear»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  4. Install the rear seat in the vehicle. Refer to «Seat Replacement - Rear Bench»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  1. Release the J channel fastener located at the bottom of the seat back.
  2. Use a small bladed tool release the clip (1) that retains the armrest (3) to the seatback (2).
  3. Pull the armrest (3) from the seatback (2).
  1. Install the retaining clip (1) to the seatback.
  2. Ensure that you fully seat the retaining clip.
  3. Position the armrest (3) to the hole in the seatback (2).
  4. Press in on the armrest to engage the armrest into the retaining clip in the seatback.
  5. Pull outward on the armrest to ensure the armrest is fully secured into the retaining clip.
  6. Engage the J channel fastener at the bottom of the seat back.
  1. Remove the rear seat (1) from the vehicle. Refer to «Seat Replacement - Rear Bench»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  2. Remove the nuts (2) and bolts (3) that retain the seat riser to the seat cushion frame.
  3. Remove the seat riser from the seat cushion frame.
  1. Position the seat riser to the seat cushion frame.
  2. Install the bolts (3) and nuts (2) to retain the seat riser to the seat cushion frame. Tighten: Tighten the nuts to 55 N.m (41 lb ft).
  3. Install the seat (1) into the vehicle. Refer to «Seat Replacement - Rear Bench»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
IMPORTANTThe nuts that retain the rear passenger seat floor rail on the left hand side of the vehicle can be accessed from underneath the vehicle. The right hand side rear passenger seat floor rails are similar, but require that the heat shields be removed for access to the floor rail nuts. The 12 passenger extended van and the 15 passenger van reinforcements are used along with the rear seat floor rails. The reinforcements are installed on the underside of the vehicle to the floor rail studs, and held in place by the floor rail retaining nuts. If you remove the reinforcements, reinstall the reinforcements.
  1. Remove the rear passenger seats from the vehicle. Refer to «Seat Replacement - Rear Bench»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .
  2. Raise the vehicle and support the vehicle with safety stands. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/chevy-express-g2500/1996-2012/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
  3. Remove the spare tire from the vehicle.
  4. Remove the heat shields from the vehicle. Refer to «Exhaust Heat Shield Replacement - Frame»(/chevrolet/chevy-express-g2500/1996-2012/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
  5. Remove the nuts (3) that retain the floor rail to the floor of the vehicle.
  6. Remove the rear seat track reinforcements from the seat track studs (12 and 15 Passenger).
  7. Lower the vehicle.
  8. Remove the rear floor mat/carpet. Refer to «Mat/Carpet Replacement - Rear Floor (Passenger Models)»(/chevrolet/chevy-express-g2500/1996-2012/remont/exteriorinterior-trim/#interior-trim) or «Mat/Carpet Replacement - Rear Floor (Cargo Models)»(/chevrolet/chevy-express-g2500/1996-2012/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
  9. Remove the floor rail (1, 2) from the vehicle.
  1. Position the floor rail (2) to the vehicle.
  2. Install the rear floor mat/carpet. Refer to «Mat/Carpet Replacement - Rear Floor (Passenger Models)»(/chevrolet/chevy-express-g2500/1996-2012/remont/exteriorinterior-trim/#interior-trim) or «Mat/Carpet Replacement - Rear Floor (Cargo Models)»(/chevrolet/chevy-express-g2500/1996-2012/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
  3. Raise the vehicle and support the vehicle with safety stands. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/chevy-express-g2500/1996-2012/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
  4. Install the rear seat track reinforcements to the seat track studs (12 and 15 Passenger).
  5. Inspect the nuts (3) in order to ensure that the sealer is intact.
  6. If the sealer is not intact, apply a medium bodied sealer to the nuts before installing.
  7. Install the nuts to retain the floor rail to the vehicle. Tighten: Tighten the nuts to 43 N.m (32 lb ft).
  8. Install the heat shields to the vehicle. Refer to «Exhaust Heat Shield Replacement - Frame»(/chevrolet/chevy-express-g2500/1996-2012/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
  9. Install the spare tire to the vehicle.
  10. Remove the safety stands.
  11. Lower the vehicle.
  12. Install the rear passenger seats to the vehicle. Refer to «Seat Replacement - Rear Bench»(/chevrolet/chevy-express-g2500/1996-2012/remont/seats/#seat-system) .

The power seat system for the driver and passenger consists of the following components

  1. Power Seat Switch
  2. Seat Horizontal Motor
  3. Seat Front Vertical Motor
  4. Seat Rear Vertical Motor

This seat contains three motors for positioning. They are the Horizontal motor, Rear Vertical motor, and a Front Vertical motor The Horizontal motor moves the seat forward and rearward. The Front Vertical motor raises and lowers the front of the seat and the Rear Vertical motor raises and lowers the rear of the seat. Power is supplied to the motors through a battery positive voltage supply circuit at the Power Seat Switch. A ground circuit is supplied to the motors through the Power Seat Switch also.

The direction the motor operates depends on the polarity applied to the motor control circuits. Each time direction is changed using the power seat switch, the power and ground paths are reversed at the control circuits causing the motor to position the seat in the desired direction.