INSTALLATION INSTRUCTIONS FOR PART 87-99-3052 APPLICATIONS CHEVROLET Blazer 1973-1987 Pickup 1973-1987 GMC Pickup 1973-1987 Suburban 1973-1987 87-99-3052 KIT FEATURES • Shaft and DIN Unit Provisions KIT COMPONENTS A) Faceplate • B) Radio Housing A B TOOLS REQUIRED: • Phillips Screwdriver • Adjustable Wrench 1-800-221-0932 www.metraonline.
87-99-3052 TABLE OF CONTENTS Dash Disassembly - All Vehicles CHEVROLET Blazer 1973-1987 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Pickup 1973-1987 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 GMC Pickup 1973-1987 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Suburban 1973-1987 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
87-99-3052 DASH DISASSEMBLY/ KIT ASSEMBLY/FINAL ASSEMBLY ALL VEHICLES Chevrolet - Blazer 1973-1987, Pickup 1973-1987 GMC - Pickup 1973-1987, Suburban 1973-1987 1 Disconnect the negative battery terminal to prevent an accidental short circuit. Remove (4) Phillips screws from the lower steering column panel and remove the panel. Remove (8) Phillips screws from the perimeter of the dash trim bezel and remove the bezel. Remove (3) Phillips screws securing the factory head unit and disconnect the wiring.
87-99-3052 KIT ASSEMBLY/FINAL ASSEMBLY ALL VEHICLES Chevrolet - Blazer 1973-1987, Pickup 1973-1987 GMC - Pickup 1973-1987, Suburban 1973-1987 1 DIN HEAD UNITS: Mount the Radio Housing to the sub-dash with (3) Phillips screws previously removed in step #1. (see Fig. A). Scribe the DIN radio opening onto the sub-dash metal, remove the Housing and cut the sub-dash along the scribed line. (see Fig. B). Place the Housing between the dash trim bezel and sub-dash and secure with the same (3) Phillips screws.
87-99-3052 FINAL ASSEMBLY FINAL ASSEMBLY A (A) Strip wire ends back 1/2" B B) Twist ends together C) Solder D) Tape C D 1 Locate the factory wiring harness in the dash. Metra recommends using the proper mating adapter and making connections as shown. (Isolate and individually tape off the ends of any unused wires to prevent electrical short circuit.) 2 Re-connect the negative battery terminal and test the unit for proper operation.
87-99-3052 KIT ASSEMBLY/FINAL ASSEMBLY ALL VEHICLES Chevrolet - Blazer 1973-1987, Pickup 1973-1987 1973-1987, Suburban 1973-1987 GMC - Pickup 4 Re-connect the battery terminal and test the unit for proper operation. Locate the rear support provision in the sub-dash ("A"). Using a perforated support strap, mount the back of the unit tosub-dash. the rear support location in the sub-dash.
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7-99-3052 INSTRUCTIONS 1-800-221-0932 www.metraonline.com REV.