GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Envoy - 4WD 🢒 Body and Accessories 🢒 Entertainment 🢒 Radio Speaker Amplifier Replacement

Removal Procedure
  1. Remove the negative battery cable.
  2. Remove the floor console from the vehicle. Refer to Front Floor Console Replacement .

    3. Object Number: 401749 Size: SH
  3. Remove the console wiring harness from the amplifier.

    4. Object Number: 401737 Size: SH
  4. Remove the amplifier retaining bolts.

    5. Object Number: 401727 Size: SH
  5. Remove the amplifier from the console through the bottom of the console.

Installation Procedure

    Object Number: 401727 Size: SH
  1. Install the amplifier to the console.

    2. Object Number: 401737 Size: SH
  2. Install the amplifier retaining bolts.

    3. Tighten
    Tighten the amplifier to console screws to 6 N·m (53 lb in).


    Object Number: 401749 Size: SH
  3. Install the console wiring harness to the amplifier.
  4. Install the floor console to the vehicle. Refer to Front Floor Console Replacement .
  5. Install the negative battery cable.