Power Windows: Other Chevrolet Suburban C1500

EXCEPT LUMINA VAN, SILHOUETTE & TRANS SPORT

Before proceeding to TESTING, perform the following visual inspections

1. Check POWER WINDOW CIRCUIT BREAKER for damage. Replace if damaged.
2. Check power window voltage supply fuse. If fuse is blown, service and repair source of overload. Replace fuse.

Power Window Switch Does Not Illuminate

1. Put headlight and panel dimmer switch in PARK position. Disconnect suspect window switch. Connect test light between Brown wire and ground. If test light illuminates, go to next step. If test light does not illuminate, repair open circuit in Brown wire.
2. Connect test light between Brown and Black wires. If test light does not illuminate, repair open circuit in Black wire. If test light illuminates, replace switch.

(Suburban & Crew Cab)

Turn ignition on. Connect test light between affected window switch connector Dark Blue wire and ground. If test light illuminates, replace defective window switch. If test light does not illuminate, repair open circuit in Dark Blue wire.

Turn ignition on. Disconnect left master window switch. Connect test light between Yellow wire and ground. If test light illuminates, replace master window switch. If test light does not illuminate, repair open circuit in Yellow wire.

1. Turn ignition on. Disconnect left master window switch. Connect test light between Yellow wire and ground. If test light illuminates, go to next step. If test light does not illuminate, repair open circuit in Yellow wire.
2. Connect test light between Yellow and Black wires. If test light does not illuminate, repair open circuit in Black wire. If test light illuminates, replace left master window switch.

Left Front Window Does Not Operate

1. Disconnect left front window motor. Turn ignition on. Move left front window switch to UP position. Connect test light between left front window motor Dark Blue wire and ground. If test light illuminates, go to next step. If test light does not illuminate, repair open circuit in Dark Blue wire. If circuit is okay, replace left window master switch.
2. Connect test light between left front window motor Dark Blue and Brown wires. If test light illuminates, replace left front window motor. If test light does not illuminate, repair open circuit in Brown wire. If circuit is okay, replace left window master switch.

Switch (Pickup & Utility)

1. Turn ignition on. Connect test light between right window switch connector Yellow wire and ground. If test light illuminates, go to next step. If test light does not illuminate, locate and repair open circuit in Yellow wire.
2. Move right window switch to UP position. Connect test light between right window switch connector Dark Blue wire and ground. If test light illuminates, go to next step. If test light does not illuminate, replace right window switch.
3. Move right window switch to DOWN position. Connect test light between right window switch connector Brown wire and ground. If test light illuminates, system is okay, If test light does not illuminate, replace right window switch.

(Pickup & Utility)

1. Turn ignition on. Position and hold right window switch in UP position. Connect test light between right window switch Dark Blue wire and ground. If test light illuminates, go to next step. If test light does not illuminate, go to step 3).
2. Connect test light between right window motor connector Dark Blue and Brown wires. If test light illuminates, replace right window motor. If test light does not illuminate, go to step 4). 3) Connect test light between left window switch connector Yellow wire and ground. If test light illuminates, go to next step. If test light does not illuminate, locate and repair open circuit in Yellow wire.
3. Connect test light between left window switch connector Yellow and Light Blue wires. If test light illuminates, go to step 6). If test light does not illuminate, go to next step.
4. Connect test light between left window switch connector Yellow and Black wires. If test light illuminates, replace left window switch. If test light does not illuminate, repair open circuit in Black wire.
5. Connect test light between left window switch connector Yellow and Tan wires. If test light illuminates, go to next step. If test light does not illuminate, replace left window switch.
6. Connect test light between right window switch connector Yellow wire and Light Blue wire, then between Yellow wire and Tan wire. If test light illuminates at both wires, replace left window switch. If test light illuminates at only one wire or not at all, locate and repair open circuits from right window switch connector to master switch connector.