GM Cadillac 1967-1989 Repair Guide Signal And Marker Lights

1986 Cadillac Deville 4.1L TBI 8cyl GM Cadillac 1967-1989 Repair GuideSignal And Marker Lights1964-79 VEHICLES1964-79 VEHICLESSince the light housing capsules (on all late model vehicles) are constructed by means of sonic welding, theONLY services which can be performed are the replacement of the bulbs or the housing themselves.REMOVAL & INSTALLATIONFront Turn Signal and Parking Lights1. Reach up under the fender and twist out the electrical socket from the rear of the housing.2. Remove the housing-to-front fender extension screws and remove the housing (pull it rearward).3. To install, reverse the removal procedures.1980 AND LATERSee Figures 1, 2, 3, 4, 5, 6, 7 and 81. Remove the headlight bezel mounting screws and the bezel.2. Disconnect the twist lock socket from the lens housing.3. Remove the parking light housing.

1986 Cadillac Deville 4.1L TBI 8cyl Fig. Fig. 1: Removing the lense housing retaining screwsFig. Fig. 2: Removing the lense housing

1986 Cadillac Deville 4.1L TBI 8cyl3 of 11Fig. Fig. 3: Removing the bulb from the lense housingFig. Fig. 4: Removing the parking light or turn signal bulb from a common socketFig. Fig. 5: Removing the side marker bulb from the lense housing9/16/2010 1:19 PM

1986 Cadillac Deville 4.1L TBI 8cyl4 of 11Fig. Fig. 6: Removing the side marker bulb from the socketTo remove the bulb, turn the twist lock socket (at the rear of the housing) counterclockwise1/4turn, thenremove the socket with the bulb; replace the bulb if defective.4. To install, reverse the removal procedures.Fig. Fig. 7: Removing the lense housing retaining screw9/16/2010 1:19 PM

1986 Cadillac Deville 4.1L TBI 8cyl5 of 11Fig. Fig. 8: Removing the lense housingSide Marker Lights1. Remove the headlight bezel mounting screws and the bezel.2. Disconnect the twist lock socket from the lens housing.3. Remove the marker light housing.To remove the bulb, turn the twist lock socket (at the rear of the housing) counterclockwise1/4turn, thenremove the socket with the bulb; replace the bulb if defective.4. To install, reverse the removal procedures.1980 AND LATER1. Remove the marker light housing screws and the housing.2. Disconnect the twist lock socket from the lens housing.To remove the bulb, turn the twist lock socket (at the rear of the housing) counterclockwise1/4turn, thenremove the socket with the bulb; replace the bulb if defective.9/16/2010 1:19 PM

1986 Cadillac Deville 4.1L TBI 8cyl6 of 113. To install, reverse the removal procedures.Rear Turn Signal, Brake and Parking LightsSee Figures 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 and 201. Remove the tail light panel screws and the panel.2. Disconnect the twist lock socket from the lens housing.To remove the bulb, turn the twist lock socket (at the rear of the housing) counterclockwise1/4turn, thenremove the socket with the bulb, replace the bulb if defective.3. To install, reverse the removal procedures.Fig. Fig. 9: Removing the reverse or back-up light housing screw9/16/2010 1:19 PM

1986 Cadillac Deville 4.1L TBI 8cyl7 of 11Fig. Fig. 10: Removing the reverse or back-up light housing assemblyFig. Fig. 11: Removing the reverse or back-up light from the housing9/16/2010 1:19 PM

1986 Cadillac Deville 4.1L TBI 8cyl 8 of 11Fig. Fig. 12: Removing the license plate light housing screwFig. Fig. 13: Removing the license plate light housingFig. Fig. 14: Removing the tail light housing bezel retaining screw9/16/2010 1:19 PM

1986 Cadillac Deville 4.1L TBI 8cyl 9 of 11Fig. Fig. 15: Removing the tail light housing bezelFig. Fig. 16: Removing the tail light housing screw9/16/2010 1:19 PM

1986 Cadillac Deville 4.1L TBI 8cyl10 of 11Fig. Fig. 17: Removing the tail light housingFig. Fig. 18: Removing a common tail light or turn signal bulbFig. Fig. 19: Removing the side marker light from the housing9/16/2010 1:19 PM

1986 Cadillac Deville 4.1L TBI 8cyl 11 of 11Fig. Fig. 20: Removing the side marker light from the socketBack to Top9/16/2010 1:19 PM

GM Cadillac 1967-1989 Repair Guide Signal And Marker Lights 1964-79 VEHICLES 1964-79 VEHICLES Since the light housing capsules (on all late model vehicles) are constructed by means of sonic welding, the ONLY services which can be performed are the replacement of the bulbs or the housing themselves.