SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1691 (FIXED AND MOVEABLE WINDOWS SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESPOWER REAR SLIDING WINDOW MALFUNCTIONCOMPONENT TESTING
2006 Chevrolet Suburban C2500, 6.0 U

Component Testing

2006 Chevrolet Suburban C2500, 6.0 USECTION Component Testing
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Sliding Rear Window Switch

  1. Ignition OFF, disconnect the harness connector at the sliding rear window switch.
  2. Test for infinite resistance between the control terminals C and B and the voltage terminal A with the switch in the INACTIVE position.
    • If less than the specified value, replace the sliding rear window switch.
  3. Test for less than 2 ohms between the control terminal C and the voltage terminal A with the switch in the CLOSE position.
    • If greater than the specified range, replace the sliding rear window switch.
  4. Test for less than 2 ohms between the control terminal B and the voltage terminal A with the switch in the OPEN position.
    • If greater than the specified range, replace the sliding rear window switch.

Relay Test

  1. Ignition OFF, disconnect the appropriate relay.
  2. Test for 60-200 ohms between terminals 85 and 86.
    • If not within the specified range, replace the relay.
  3. Test for infinite resistance between the following terminals:
    • 30 and 86
    • 30 and 87
    • 30 and 85
    • 85 and 87
    • If not the specified value, replace the relay.
  4. Test for less than 2 ohms between terminals 30 and 87A.
    • If greater than the specified range, replace the relay.
  5. Install a 3-amp fused jumper wire between relay terminal 85 and 12 volts. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 ohms of resistance between terminals 30 and 87.
    • If greater than the specified range, replace the relay.

Sliding Rear Window Motor

  1. Ignition OFF, disconnect the harness connector at the sliding rear window motor.
  2. Install a 25A fused jumper wire between the control terminal A and 12 volts. Momentarily install a jumper wire between the control terminal B and ground. The sliding rear window motor should perform the OPEN or CLOSE function.
    • If the function does not perform as specified, replace the sliding rear window motor.
  3. Reverse the jumper wires; the sliding rear window motor should perform the CLOSE or OPEN function.
    • If the function does not perform as specified, replace the sliding rear window motor.
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.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.