Component Testing

2013 GMC Savana H1500, Van CargoSECTION Component Testing

Window Motor

  1. Ignition OFF, disconnect the harness connector at the appropriate Window Motor.
  2. Install a 20 A fused jumper wire between one of the control terminals and 12 V. Momentarily install a jumper wire between the other control terminal and ground. Reverse the jumper wires at least two times, the Window Motor should perform the UP and DOWN functions.
    • If the Window Motor does not perform the UP and DOWN functions 

      Replace the Window Motor.

    • If the Window Motor performs the UP and DOWN functions 
  3. All OK

Driver Window Switch

  1. Ignition OFF, disconnect the harness connector at the Window Switch-Driver.
  2. Test for infinite resistance between the terminals listed below with the switch in the open position:
    • Ignition terminal C and control terminal A
    • Ignition terminal C and control terminal D
    • Ignition terminal C and control terminal G
    • Ignition terminal C and control terminal H
    • If less than infinite resistance 

      Replace the Window Switch-Driver.

    • If infinite resistance 
  3. Test for less than 3 Ω between the terminals listed below with the switch in the open position:
    • Ground terminal F and control terminal A
    • Ground terminal F and control terminal D
    • Ground terminal F and control terminal G
    • Ground terminal F and control terminal H
    • If 3 Ω or greater 

      Replace the Window Switch-Driver.

    • If less than 3 Ω 
  4. Test for less than 3 Ω between the terminals listed below with the switch in the Up position.
    • Driver window - ignition terminal C and control terminal G
    • Passenger window - ignition terminal C and control terminal A
    • If 3 Ω or greater 

      Replace the Window Switch-Driver.

    • If less than 3 Ω 
  5. Test for less than 3 Ω between the terminals listed below with the switch in the Down position:
    • Driver window - ignition terminal C and control terminal H
    • Passenger window - ignition terminal C and control terminal D
    • If 3 Ω or greater 

      Replace the Window Switch-Driver.

    • If less than 3 Ω 
  6. All OK

Passenger Window Switch

  1. Ignition OFF, disconnect the harness connector at the Window Switch-Passenger.
  2. Test for infinite resistance between the terminals listed below with the switch in the open position:
    • Ignition terminal A and control terminal G
    • Ignition terminal A and control terminal F
    • If less than infinite resistance 

      Replace the Window Switch-Passenger.

    • If infinite resistance 
  3. Test for less than 3 Ω between the control terminals listed below with the switch in the open position:
    • Control terminal H and control terminal G
    • Control terminal D and control terminal F
    • If 3 Ω or greater 

      Replace the Window Switch-Passenger.

    • If less than 3 Ω 
  4. Test for less than 3 Ω between the ignition terminal A and the control terminal G with the switch in the Up position.
    • If 3 Ω or greater 

      Replace the Window Switch-Passenger.

    • If less than 3 Ω 
  5. Test for less than 3 Ω between the ignition terminal A and the control terminal F with the switch in the Down position.
    • If 3 Ω or greater 

      Replace the Window Switch-Passenger.

    • If less than 3 Ω 
  6. All OK
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.