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

Radio/Navigation System Schematics

Fig 1: Power, Ground, and References

GM1800139

Courtesy of GENERAL MOTORS CORP.

Fig 2: Radio to Speakers - UW6

GM1800150

Courtesy of GENERAL MOTORS CORP.

Fig 3: Audio Signal Communication - U87

GM1800154

Courtesy of GENERAL MOTORS CORP.

Fig 4: Speakers - Front - U87

GM1800158

Courtesy of GENERAL MOTORS CORP.

Fig 5: Speakers - Rear - U87

GM1800160

Courtesy of GENERAL MOTORS CORP.

Fig 6: Satellite Radio - U2K

GM1800161

Courtesy of GENERAL MOTORS CORP.