Chevy Gmc Chevy 1988-94 Truck Radio Tuner Box With EQ Delco CDM Amp Amplifier GMThis is a factory refurbished tuner box for 1988 1994 chevy GMC trucks with the equalizer. It will also work in many vehicles with the same part # including Cadillac, Chevy General Motor Vehicles from 1988 1996. Fully tested and works great. Includes a 6 month Warranty. This tuner will NOT work with the Bose system. It will work with the 1988 1994 GM vehicles with the EQ style radios. The Head unit is NOT included and includes only the tuner shown in