April 5, 2026: LEMON Manuals is launched! Read the announcement.

Radio/Navigation System Schematics

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Radio Power, Ground and Serial Data

GM1915151

Courtesy of GENERAL MOTORS CORP.

Fig 2: Amplifier (UQA) and Rear Seat Audio (UK6) Power, Ground and Serial Data

GM1915157

Courtesy of GENERAL MOTORS CORP.

Fig 3: Amplifier Inputs (UQA)

GM1915163

Courtesy of GENERAL MOTORS CORP.

Fig 4: Front Speakers (UQ3/UQ5)

GM1915167

Courtesy of GENERAL MOTORS CORP.

Fig 5: Rear Speakers (UQ3/UQ5)

GM1915170

Courtesy of GENERAL MOTORS CORP.

Fig 6: Front Speakers (UQA)

GM1915173

Courtesy of GENERAL MOTORS CORP.

Fig 7: Rear Speakers (UQA)

GM1915177

Courtesy of GENERAL MOTORS CORP.

Fig 8: Digital Radio Receiver (U2K)

GM1915179

Courtesy of GENERAL MOTORS CORP.