GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Pickup - 4WD 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 PRNDL Display Inaccurate or Inoperative

PRNDL Display Inaccurate or Inoperative PRNDL Inoperative

Step

Action

Value(s)

Yes

No

1

Did you perform the Instrument Cluster System Check?

--

Go to Step 2

Go to Instrument Cluster System Check

2
  1. Disconnect the TR Switch connector C1.
  2. Connect a J 39200 DMM  (continuity) between cavity D of the TR Switch connector C1 and ground.

Is continuity present?

--

Go to Step 4

Go to Step 3

3

Locate and repair the open in CKT 150 (BLK) between the TR Switch and G105. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

4
  1. Remove the I/P Cluster.
  2. Turn the ignition switch to the RUN position.
  3. Connect a J 39200 DMM (volts) between pin 7 of the I/P Cluster connector to ground.

Is battery voltage present?

--

Go to Step 6

Go to Step 5

5

Locate and repair the open in CKT 1020 (PNK) between the IP Fuse Block and the I/P Cluster. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

6

Connect a J 39200 DMM (continuity) between pin 4 of the I/P Cluster connector to ground.

Is continuity present?

--

Go to Step 8

Go to Step 7

7

Locate and repair the open in CKT 451 (BLK/WHT) between the I/P Cluster and ground. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

8

Replace the I/P Cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

Go to Instrument Cluster System Check

--

PRNDL Display Inaccurate or Inoperative PRNDL Inaccurate

Step

Action

Value(s)

Yes

No

1

Did you perform the Instrument Cluster System Check?

--

Go to Step 2

Go to Instrument Cluster System Check

2
  1. Disconnect the Transmission Range (TR) Switch connector C2.
  2. Turn the ignition switch to the RUN position.
  3. Conduct the PRNDL Logic Input Test by connecting fused jumper wires between ground and the appointed cavities of the TR Switch connector. Refer to PRNDL Logic Input Test PRNDL Logic Input Test .
  4. Repeat for each transmission range.

Do all ranges illuminate?

--

Go to Step 3

Go to Step 4

3

Adjust the transmission range switch. Refer to Park/Neutral Position Switch Adjustment (4L60E); Park/Neutral Position Switch Adjustment (4L80E) Automatic Transmissions.

Replace the PNP Switch. Refer to Park/Neutral Position Switch Replacement (4L60E); Park/Neutral Position Switch Replacement (4L80E) in Automatic Transmissions.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

4
  1. Remove the I/P Cluster.
  2. Connect a J 39200 DMM (continuity) between the I/P Cluster connector and connector C2 of the TR Switch to those circuit(s) that connected to the faulty PRNDL indicators.

Is continuity present in the circuit(s) tested?

--

Go to Step 6

Go to Step 5

5

Locate and repair the open in the circuit(s) that are faulty between the TR Switch and the I/P Cluster. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

6

Connect a J 39200 DMM (continuity) between the I/P Cluster connector and ground to those circuit(s) that connected to the faulty PRNDL indicators.

Is continuity present in the circuit(s) tested?

--

Go to Step 7

Go to Step 8

7

Locate and repair the short to ground in the circuit(s) that are faulty between the TR Switch and the I/P Cluster. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

8

Replace the I/P Cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

Go to Instrument Cluster System Check

--