1993 GMC Suburban Owner's Manual - Page 309

2. Removethe two blackplasticplugsintherearlightassemblyaccess holes. 3. Removethe two rearlightassemblyscrewsinsidethefenderandpull out thelightassembly.Youmaywant to useamagneticscrewdriver whenremovingthescrews. .. . PO499 4. Remove the screwsfromthebulbretainerandtakethe of the light assembly. bulbietainer off 5. -Pull the old bulb straight out of the socket 6. Put in anew .bulb and push it in until it is tight.. 7. Replacethebulbretainer. 8. Replace the rear -light assembly .and tighten the screws. You may want to use a magnetic. screwdriver when installing the screws. 9. Closethetailgateorrear doors. Fuses and Ckcujt Breakers The wiring circuits in your vehicle are protected from short circuits by a combination of fuses,circuitbreakers,andfusiblethermallinksinthewiring itself. This greatly reduces the chance of firescausedbyelectricalproblems. in theIndexformoreinformation. See"FusesandCircuitBreakers" Headlights The headlight wiring is protected by a circuit breaker in thelightswitch.An to go on and off, or in some cases' to electrical overload will cause the lights remain off. I this happens,haveyourheadlightwiringcheckedrightaway. f 6-43