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Grymlyn420

Need radio and amplifier wiring diagrams for 03 Yukon Denali

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I recently bought a 2003 Yukon XL Denali from a private seller. Upon removing the stock radio, found that he had cut the factory plug to wire in his own system. Before selling the vehicle, he replaced the stock radio with a plug that wasnt originally a radio plug. The stock radio is locked snd i have no code to unlock. I need a diagram so i can wire in my kenwood head unit.

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I'll check my database after work and give you the info.

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Posted (edited)

12v......not sure

ground........black/white

serial data.......not sure

left front +.......tan

left front - ........gray

right front +.....light green

right front - .....dark green

left rear +.....brown

left rear - .......yellow

right rear +......dark blue

right rear - ......light blue

Edited by JH1973

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I’m pretty sure the Denali in 2003 has the Bose amp.  With the after market radio, the vehicle would need to be rewired or new wires where ran(not likely). Most likely cut up the harness to reduce the running of wires. Take a peek to see if the Bose amp is still there in the rear left cargo panel.

 

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The bose amp is in the center console. Its the lux amp. 

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