Home ReviewsRefund
Home/GMC/Safari/GMC Safari II (1994-2005)/Repair manual/Windows/Power Window System: Other
Contents Wiring diagrams Section: Windows All sections

Power Window System: Other GMC Safari II

Windows 3 illustrations ~1950 words

SYSTEM CHECK

Turn ignition switch to ACC position. Operate each window up and down from master window switch assembly. Operate each window from individual switch. If all windows operate quietly and smoothly without sticking, system check is complete. If all windows do not function properly, perform PRELIMINARY INSPECTION .

SYSTEM TESTS

CAUTIONWhen battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.

Note. Before any testing is attempted, battery should be fully charged and all connections and pins cleaned and tightened to ensure proper continuity and ground.

Note. To prevent damage to terminals, Connector Test Adaptor Kit (J-35616-A) must be used whenever a diagnostic procedure requires checking or probing a terminal. To locate and identify terminals, see WIRING DIAGRAMS .

SymptomPerform Test
All Windows InoperativeA
Left Window InoperativeB
Right Window Inoperative From Right SwitchC
Right Window InoperativeD

SYMPTOM INDEX

Astro & Safari

  1. Disconnect master window switch assembly connector. Turn ignition switch to RUN position. Connect a test light between ground and master window switch assembly connector C1 terminal "L" (Yellow wire). (Scheme 1) If test light illuminates, go to next step. If test light does not illuminate, repair open in Yellow wire between master window switch assembly connector and instrument panel fuse block. See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000).
  2. Connect a test light between master window switch assembly connector C1 terminal "L" (Yellow wire) and master window switch assembly connector C2 terminal "C" (Black wire). (Scheme 2) If test light illuminates, replace master window switch assembly. If test light does not illuminate, repair open in Black wire between master window switch assembly connector C2 terminal "C" and ground. See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000). Retest system.

Scheme 1

Scheme 1
Scheme 1

Scheme 2

Scheme 2
Scheme 2

Chevy Express & Savana

  1. Check PWR WDO (25-amp) fuse in instrument panel fuse block. See «COMPONENT LOCATIONS»(ref-2718-S28578599202000041200000). If fuse is blown, go to step 4. If fuse is not blown, go to next step.
  2. Disconnect master window switch assembly connector. Connect an ohmmeter between ground and master window switch assembly connector terminal "G" (Black wire). (Scheme 3) If continuity exists, go to next step. If continuity does not exist, go to step 5.
  3. Turn ignition switch to ACC position. Connect a test light between ground and master window switch assembly connector terminal "H" (Yellow wire). (Scheme 3) If test light does not illuminate, go to step 7. If test light illuminates, go to step 6.
  4. Repair short in Yellow wire between PWR WDO fuse terminal in instrument panel fuse block and either window switch connector. See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000).
  5. Repair open in Black wire between master window switch assembly connector terminal "G" and ground. See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000).
  6. Replace master window switch assembly. See «WINDOW SWITCH»(ref-2718-S14469803752000041200000) under REMOVAL & INSTALLATION.
  7. Repair open in Yellow wire between PWR WDO fuse terminal in instrument panel fuse block and master window switch. See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000).

Identifying Power Window Switch Connector Terminals (Chevy Express & Savana). Scheme 3

Scheme 3: Identifying Power Window Switch Connector Terminals (Chevy Express & Savana)
Scheme 3: Identifying Power Window Switch Connector Terminals (Chevy Express & Savana)
  1. Disconnect left window motor connector. Turn ignition switch to RUN position. Connect a test light between ground and left window motor connector terminal "A" (Dark Blue wire). Press left window switch on master window switch assembly to UP position. If test light illuminates, go to next step. If test light does not illuminate, go to step 3.
  2. Connect a test light between left window motor connector terminals "A" (Dark Blue wire) and "B" (Brown wire). Press left window switch on master window switch assembly to UP position. If test light illuminates, go to step 4. If test light does not illuminate, go to step 5.
  3. Check for an open in Dark Blue wire between left window motor connector terminal "A" and master window switch assembly connector C2 terminal "A". (Scheme 2) See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000). If Dark Blue wire is open, go to step 7. If Dark Blue wire is okay, go to step 6.
  4. Replace left window motor. See «WINDOW MOTOR»(ref-2718-S38374318172000041200000) under REMOVAL & INSTALLATION. Retest system.
  5. Check for an open in Brown wire between left window motor connector terminal "B" and master window switch assembly connector C2 terminal "E". See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000). If Brown wire is open, go to step 8. If Brown wire is okay, go to next step.
  6. Replace master window switch assembly. See «WINDOW SWITCH»(ref-2718-S14469803752000041200000) under REMOVAL & INSTALLATION. Retest system.
  7. Repair open in Dark Blue wire between left window motor connector terminal "A" and master window switch assembly connector C2 terminal "A".
  8. Repair open in Brown wire between left window motor connector terminal "B" and master window switch assembly connector C2 terminal "E".
  1. Disconnect master window switch assembly connector. Disconnect left window motor connector. Connect an ohmmeter between master window switch assembly terminal "E" and left window motor connector terminal "A" (Dark Blue wire). (Scheme 3) If continuity exists, go to next step. If continuity does not exist, go to step 8.
  2. Connect an ohmmeter between master window switch assembly connector terminal "A" and left window motor connector terminal "B" (Brown wire). If continuity exists, go to next step. If continuity does not exist, go to step 9.
  3. Connect an ohmmeter between master window switch assembly terminals "E" and "G" (component side). If continuity exists, go to next step. If continuity does not exist, go to step 10.
  4. Connect an ohmmeter between master window switch assembly terminals "A" and "G" (component side). If continuity exists, go to next step. If continuity does not exist, go to step 10.
  5. Connect a test light between ground and master window switch assembly connector terminal "H" (Yellow wire). (Scheme 3) Turn ignition switch to ACC position. If test light illuminates, go to next step. If test light does not illuminate, go to step 11.
  6. Connect master window switch assembly connector. Connect a test light between ground and left window motor connector terminal "A" (Dark Blue wire). Press left window switch on master window switch assembly to UP position. If test light illuminates, go to next step. If test light does not illuminate, go to step 10.
  7. Connect a test light between ground and left window motor connector terminal "B" (Brown wire). Press left window switch on master window switch assembly to DOWN position. If test light illuminates go to step 12. If test light does not illuminate, go to step 10.
  8. Repair open in Dark Blue wire between master window switch assembly connector terminal "E" and left window motor connector "A". See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000).
  9. Repair open in Brown wire between master window switch assembly connector terminal "A" and left window motor connector terminal "B". See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000).
  10. Replace master window switch assembly. See «WINDOW SWITCH»(ref-2718-S14469803752000041200000) under REMOVAL & INSTALLATION.
  11. Repair open in Yellow wire between master window switch assembly connector terminal "H" and splice S229. See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000).
  12. If no mechanical problems or binding exists in operation of window regulator, replace left window motor. See «WINDOW MOTOR»(ref-2718-S38374318172000041200000) under REMOVAL & INSTALLATION.

Disconnect right window switch connector. Turn ignition switch to RUN position. Connect a test light between ground and right window switch connector C2 terminal "F" (Yellow wire). (Scheme 1) If test light illuminates, replace right window switch. See WINDOW SWITCH under REMOVAL & INSTALLATION. If test light does not illuminate, repair open in Yellow wire between right window switch connector C2 terminal "F" and splice S305. See WIRING DIAGRAMS.

Disconnect right window switch connector. Turn ignition switch to ACC position. Connect a test light between ground and right window switch connector terminal "F" (Yellow wire). (Scheme 3) If test light illuminates, replace right window switch. See WINDOW SWITCH under REMOVAL & INSTALLATION. If test light does not illuminate, repair open in Yellow wire between right window switch and splice S229. See WIRING DIAGRAMS.

  1. Using test light, backprobe between right window switch connector C2 terminals "G" (Dark Blue wire) and "K" (Brown wire). (Scheme 1) Observe test light while pressing right window switch in UP or DOWN position. If test light illuminates in both positions, go to next step. If test light does not illuminate in both positions, go to step 4.
  2. Disconnect right window motor connector. Connect a test light between right window motor connector terminals "A" (Brown wire) and "B" (Dark Blue wire). Observe test light while pressing right window switch in UP or DOWN position. If test light does not illuminate in both positions, go to next step. If test light illuminates in both positions, go to step 5.
  3. Connect an ohmmeter between ground and right window motor connector terminal "A" (Brown wire). If continuity exists, go to step 6. If continuity does not exist, go to step 7.
  4. Disconnect right window switch connector. Connect an ohmmeter between ground and right window switch connector C2 terminal "J" (Light Blue wire). (Scheme 1) If continuity exists, go to step 8. If continuity does not exist, go to step 11.
  5. Replace right window motor. See «WINDOW MOTOR»(ref-2718-S38374318172000041200000) under REMOVAL & INSTALLATION.
  6. Repair open in Dark Blue wire between right window switch connector C2 terminal "G" and right window motor connector terminal "B". See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000).
  7. Repair open in Brown wire between right window switch connector C2 terminal "K" and right window motor connector terminal "A". See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000).
  8. Connect an ohmmeter between ground and right window switch connector C2 terminal "L" (Tan wire). If continuity exists, go to step 10. If continuity does not exist, go to next step.
  9. Connect an ohmmeter between ground and master window switch assembly connector C2 terminal "D" (Tan wire). (Scheme 2) If continuity exists, go to step 12. If continuity does not exist, go to step 13.
  10. Replace right window switch. See «WINDOW SWITCH»(ref-2718-S14469803752000041200000) under REMOVAL & INSTALLATION.
  11. Connect an ohmmeter between ground and master window switch assembly connector C2 terminal "B" (Light Blue wire). (Scheme 2) If continuity exists, go to step 14. If continuity does not exist, go to step 15.
  12. Repair open in Tan wire between right window switch connector C2 terminal "L" and master window switch assembly connector C2 terminal "D". See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000).
  13. Replace master window switch assembly. See «WINDOW SWITCH»(ref-2718-S14469803752000041200000) under REMOVAL & INSTALLATION.
  14. Repair open in Light Blue wire between right window switch connector C2 terminal "J" and master window switch assembly connector C2 terminal "B". See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000).
  15. Replace master window switch assembly. See «WINDOW SWITCH»(ref-2718-S14469803752000041200000) under REMOVAL & INSTALLATION.
  1. Disconnect master window switch assembly and right window switch connectors. Connect an ohmmeter between master window switch assembly connector terminal "F" and right window switch connector terminal "D" (Light Blue wire). (Scheme 3) If continuity exists, go to next step. If continuity does not exist, go to step 5.
  2. Connect an ohmmeter between master window switch assembly connector terminal "B" and right window switch connector terminal "H" (Tan wire). (Scheme 3) If continuity exists, go to next step. If continuity does not exist, go to step 6.
  3. Disconnect right window motor connector. Connect an ohmmeter between right window switch connector terminal "A" and right window motor connector terminal "B" (Brown wire). (Scheme 3) If continuity exists, go to next step. If continuity does not exist, go to step 7.
  4. Connect an ohmmeter between right window switch connector terminal "E" and right window motor connector terminal "A" (Dark Blue wire). (Scheme 3) If continuity exists, go to step 8. If continuity does not exist, go to step 9.
  5. Repair open in Light Blue wire between master window switch assembly connector terminal "F" and right window switch connector terminal "D". See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000).
  6. Repair open in Tan wire between master window switch assembly connector terminal "B" and right window switch connector terminal "H". See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000).
  7. Repair open in Brown wire between right window switch connector terminal "A" and right window motor connector terminal "B". See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000).
  8. If no mechanical problems or binding exists in operation of window regulator, replace right window motor. See «WINDOW MOTOR»(ref-2718-S38374318172000041200000) under REMOVAL & INSTALLATION.
  9. Repair open in Dark Blue wire between right window switch connector terminal "E" and right window motor connector terminal "A". See «WIRING DIAGRAMS»(ref-2718-S19006874672000041200000).

More articles — Power Window System