Ultimate 78-87 Gm Delco Am Fm Stereo Radio Etr Cassette Chevy C/k Truck Blazer Bluetooth Collection [wXrpNZ7n]

78-87 GM Delco AM FM Stereo Radio ETR Cassette Chevy C/K Truck Blazer in good working order. Has had a new belt installed and cassette mechanism cleaned/lubricated. AM and FM sides both strong and all 4 speaker channels working loudly.  Also has had the addition of an internal auto switching Bluetooth board. Will fit many GM models of this era. Please check fitment.