GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Century (China) (CNG) 🢒 Body and Accessories 🢒 Entertainment 🢒 Radio Illumination Inoperative with Park Lamps On

Step

Action

Value(s)

Yes

No

1
  1. Turn the headlamp switch to the ON position.
  2. With a test light, backprobe between the radio harness connector terminal F4 to ground.

Does the test light illuminate?

--

Go to Step 3

Go to Step 2

2

Repair a poor connection or open in circuit 8.

Is the repair complete?

--

Go to Step 3

--

3

Replace the radio. Refer to Radio Replacement for service procedure.

Is the repair complete?

--

Go to Diagnostic System Check - Radio/Audio System

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