GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Grand Prix 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Fasten Safety Belt Indicator/Chime Always On

Step

Action

Value(s)

Yes

No

The fasten belts indicator lamp in the instrument cluster stays on when turning the ignition key from the OFF to the RUN position with the driver's seat belt fastened, or the fasten belts indicator lamp stays on for over 77 seconds when turning the ignition key from the OFF to the RUN position with the drivers seat belt unfastened. The BCM sounds the fasten seat belt reminder chime for six seconds when turning the ignition key from the OFF to the RUN position with the driver's seat belt unfastened.

1

Was the Audible Warning System Check performed?

--

Go to Step 2

Go to Audible Warnings System Check

2

Was the BCM Diagnostic System Check performed?

--

Go to Step 3

Go to Diagnostic System Check - Body Control System in Body Control System

3
  1. Disconnect the BCM connector C2.
  2. Observe the fasten belt indicator.

Is the fasten belt indicator off?

--

Go to Step 5

Go to Step 4

4
  1. Disconnect the instrument cluster. Refer to Instrument Panel, Gages and Console for service procedures.
  2. Turn the ignition switch to the RUN position.
  3. Using a DMM, measure the voltage between the BCM harness connector C2 terminal D12 and ground.

Is the voltage measured within the specified range?

Less than 2 V

Go to Step 6

Go to Step 7

5

Replace the BCM. Refer to Instrument Panel, Gauges and Console for service procedures.

Is the repair complete?

--

Go to Step 8

--

6

The fasten belts indicator lamp stays on due to a malfunction in the instrument cluster. Refer to A Diagnostic System Check - Instrument Cluster .

Is the action complete?

--

Go to Step 8

--

7

Repair short to B+ in circuit 529.

Is the repair complete?

--

Go to Step 8

--

8
  1. Turn the ignition switch to the OFF position.
  2. Reinstall connectors/components removed.
  3. Turn the ignition switch to the RUN position for 6 seconds.
  4. Turn the ignition switch to the OFF position.
  5. Remove the MALL PGM Fuse.
  6. Turn the ignition switch to the ACC position. (The BCM sounds the chime a number of times equivalent to the BCM type installed on the vehicle).
  7. Within one second, turn the ignition switch from the ACC position, to the OFF position, then back to the ACC position. (The BCM sounds any DTCs stored).

--

Go to Diagnostic System Check - Body Control System in Body Control System

Go to Audible Warnings System Check