GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 GMC C Sierra - 2WD 🢒 Body and Accessories 🢒 Doors 🢒 Power Window Inoperative - Passenger Door

Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

  1. The window lockout switch is found on vehicles equipped with 4 power windows. This switch completes or interrupts the ground circuit to all the passengers power window switches. Therefore it is imperative that the switch be placed in the OFF position before continuing with the diagnostic table.

    2.

  2. The master switch has one common ground circuit for the left front power window and the passenger door power window switches. If the left front window operates, it can be presumed that the master switch ground circuit is good.

Step

Action

Yes

No

Schematic Reference: Power Window Schematics

1

Did you perform the Door Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Door Systems

2

  1. Turn ON the ignition with, the engine OFF.
  2. Disable the window lockout function (if equipped).
  3. Operate the suspect window(s) from both the passenger window switch and the master window switch.

Does the suspect window(s) operate properly from both switches?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Does the suspect window(s) operate from the master window switch and not the passenger window switch?

Go to Step 5

Go to Step 4

4

Does the suspect window(s) operate from the passenger window switch and not the master switch?

Go to Step 8

Go to Step 12

5

Connect a test lamp between the master switch lockout signal circuit (crew cab pickup and utilities) or the passenger window switch ground circuit (2-door pickup) at the passenger window switch and B+.

Does the test lamp illuminate?

Go to Step 24

Go to Step 6

6

Is the vehicle equipped with a window lockout switch?

Go to Step 7

Go to Step 11

7

Test the master switch lockout signal circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct a condition?

Go to Step 26

Go to Step 25

8

Test the power window master switch up and down circuits for an open or short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

Go to Step 9

9

Does the driver window operate from the master switch?

Go to Step 25

Go to Step 10

10

Test the master switch ground circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct a condition?

Go to Step 26

Go to Step 25

11

Repair the open in the passenger switch ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 26

--

12
  1. Disconnect the appropriate passenger power window switch.
  2. Connect a test lamp between passenger switch RAP supply voltage circuit at the power window switch harness connector and a good ground.

Does the test lamp illuminate?

Go to Step 13

Go to Step 22

13

Connect a test lamp between the passenger power window switch RAP supply voltage circuit and the ground circuit at the power window switch harness connector.

Does the test lamp illuminate?

Go to Step 14

Go to Step 21

14
  1. Connect a test lamp to B+.
  2. Probe the power window up and down signal circuits, one at a time.

Does the test lamp illuminate at either test point?

Go to Step 23

Go to Step 15

15
  1. Connect the passenger power window switch.
  2. Disconnect the inoperative power window motor.
  3. Connect a test lamp between the power window up circuit at the power window motor harness connector and a good ground.
  4. Operate the passenger window in the up direction.

Does the test lamp illuminate?

Go to Step 16

Go to Step 18

16
  1. Connect a test lamp between the power window down circuit at the power window motor harness connector and a good ground.
  2. Operate the passenger window in the down direction.

Does the test lamp illuminate?

Go to Step 17

Go to Step 19

17
  1. Connect a test lamp between the power window up and power window down circuits at the power window motor harness connector.
  2. Operate the passenger power window in the up and down directions.

Does the test lamp illuminate in both directions?

Go to Step 20

Go to Step 24

18

Test for an open in the power window up circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

Go to Step 24

19

Test for an open in the power window down circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

Go to Step 24

20

Replace the power window motor. Refer to Front Side Door Window Regulator Motor Replacement or Rear Side Door Window Regulator Motor Replacement .

Did you complete the repair?

Go to Step 26

--

21

Repair the open in the passenger power window switch ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 26

--

22

Repair the open or short to ground in the RAP supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 26

--

23

Test for a short to ground in the power window up and down signal circuits. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

Go to Step 25

24

Replace the passenger power window switch. Refer to Front Side Door Window Switch Replacement .

Did you complete the repair?

Go to Step 26

--

25

Replace the master power window switch. Refer to Power Accessory Switch Panel Replacement .

Did you complete the repair?

Go to Step 26

--

26

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3