1999 Chevrolet Cutaway 7.4 JFACTORY OEM SERVICE PROCEDURE

Chevy Express & Savana

  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). See Figure . 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). See Figure . 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). See Figure . 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). See Figure . 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  .
  6. Repair open in Tan wire between master window switch assembly connector terminal "B" and right window switch connector terminal "H". See WIRING DIAGRAMS  .
  7. Repair open in Brown wire between right window switch connector terminal "A" and right window motor connector terminal "B". See WIRING DIAGRAMS  .
  8. If no mechanical problems or binding exists in operation of window regulator, replace right window motor. See WINDOW MOTOR  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  .
Factory Service Tools

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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.

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