Gear shift indicator lights flicker on instrument cluster

The standard instrument cluster contains a microprocessor. The instrument panel cluster (IPC) microprocessor communicates with other controllers in the vehicle over the Class 2 serial data bus. The information passed over the Class 2 bus, along with direct external connections to other controllers and devices provides the inputs that are used to operate all of the gauges and the illuminated displays in the cluster. Some displays and gauges are operated directly by external sources (devices or controllers) and others are under software control of the IPC. As the IPC microprocessor runs the operating software, the microprocessor continuously processes Class 2 data in order to determine the correct values and states to display.


PRNDL Indicator (Park Reverse Neutral Drive Low)
The PRNDL display is a variable function electronic display located in the IPC. The PRNDL display is capable of displaying PRND321. The display electronically illuminates, or lights the back of the desired character in order to indicate the gear selection in the transmission. The IPC controls the PRNDL by use of the Class 2 messages that are received from the PCM/VCM. The vehicles with automatic transmissions have an electronic park reverse neutral drive low (PRNDL) range indicator. The system uses the signals from the neutral safety back up (NSBU) switch on the side of the transmission. Signals from this switch determine which LED is in the electronic PRNDL will light. The system is electronic. No internal adjustment is needed. Refer to Transmission/Transaxle for diagnostic information.

Do you know how to test electrical circuits with a DVOM - digital volt ohm meter ? Viewing wiring diagrams to see what all is involved in the starter electrical control circuits would be the first place to start . What engine does it have ? 4.0 or 4.7 L Do you have a anti-theft light lit on the instrument cluster ? Some vehicles won't enable the starter if anti-theft is active . Looking at a wiring diagram i see the starter relay is controlled by the PCM - engine computer . Gear shift locked ? Your vehicle has a safety system that won't allow the gear selector to be moved from park unless your pushing the brake pedal . shift interlock system . Is the battery fully charged ? Do you know how to check for codes on you jeep ? Turning the key on & off then on & off an then on ,an leaving it on will put the vehicle into diagnostic mode an show codes in the odometer on the instrument cluster .
Starter Voltage Drop

Free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. year ,make , model an engine . Under system click on engine ,then under subsystem click on starting .
Electric Testing Techniques You Need to Know

Sounds like a [i]possible[/i] short in your wiring loom / harness.
Get an auto electrician to go through your wiring system.
From a first-hand incident, an unattended short [i]could[/i] result in burning wires / fire.

This warning indicator is controlled by the BCM - body control module . You cant turn it off , you need to fix the faulty input switch that signals the BCM that the door is open .
Body Control Module
The various body control module (BCM) input and output circuits are described in the corresponding functional areas indicated on the BCM electrical schematics. The BCM functions include the following:
• Battery rundown protection--Inadvertent power--Refer to Interior Lighting Systems Description and Operation in Lighting Systems.
• BTSI/automatic transmission shift lock control--Refer to Automatic Transmission Shift Lock Control Description and Operation in Automatic Transaxle - 4T65-E.
• Bulb check--Refer to Instrument Cluster Description and Operation in Instrument Panel, Gages, and Console.
• Chimes--Refer to Audible Warnings Description and Operation in Instrument Panel, Gages, and Console.
- Check gages
- Content theft deterrent
- Door ajar warning
- Headlamps ON
- Key-in-ignition
- Oil reset
- Park brake warning
- Seat belt not fastened
- Turn signal ON
- Vehicle theft deterrent
• Door lock interface--Refer to Power Door Locks Description and Operation in Doors.
• Exterior and interior lighting control--Refer to Exterior Lighting Systems Description and Operation in Lighting Systems.
- Automatic lighting control
- Backup lamps
- Daytime running lights (DRL)
- Fog lamps
- High/low beam head lamps
- Park brake lights
- Turn hazard lamps
• Gage control--Refer to Instrument Cluster Description and Operation in Instrument Panel, Gages, and Console.
• Heated seats--Refer to Heated Seats Description and Operation in Seats.
• Horn interface--Refer to Horns System Description and Operation in Horns.
• Instrument cluster indicator control--Refer to Instrument Cluster Description and Operation in Instrument Panel, Gages, and Console.
• Interior lighting--Refer to Interior Lighting Systems Description and Operation in Lighting Systems.
• Key-in-ignition sensing--Refer to Audible Warnings Description and Operation in Instrument Panel, Gages, and Console.
• Parking brake state sensing--Refer to Brake Warning System Description and Operation in Hydraulic Brakes.
• Retained accessory power (RAP)--Refer to Retained Accessory Power (RAP) Description and Operation in Retained Accessory Power.
• Rear compartment interface--Refer to Power Door Locks Description and Operation in Doors.
• Rear defogger--Refer to Rear Window Defogger Description and Operation in Stationary Windows.
• Remote function control--Refer to Keyless Entry System Description and Operation in Keyless Entry.
• RFA communication link--Refer to Keyless Entry System Description and Operation in Keyless Entry.
• Seat belt use sensing--Refer to Seat Belt System Description and Operation in Seat Belts.
• Theft deterrent vehicle/content--Refer to Theft Systems Description and Operation in Theft Deterrent.
• Washer solvent level sensing--Refer to Wiper/Washer System Description and Operation in Wipers/Washer Systems.
• Wiper/washer--Refer to Wiper/Washer System Description and Operation in Wipers/Washer Systems.

As far as the sliding doors , pull the fuse's

Did you perform the Instrument Cluster Diagnostic System Check?
--
YES - Go to Step 2
NO - Go to Diagnostic System Check - Instrument Cluster
2
Turn OFF the ignition.
Install a scan tool.
Start the engine.
Place the gear shift lever in the following gears:
• PARK
• REVERSE
• NEUTRAL
• DRIVE
Observe the Transmission Range parameter in the powertrain control module (PCM) data display.
Does the scan tool indicate that the Transmission Range parameter is the same as the PRNDL display for all gears?
YES - Go to Powertrain On Board Diagnostic (OBD) System Check Engine Controls - 3.8L
NO - Go to Step 3
3
Replace the instrument cluster. Refer to Instrument Cluster Replacement .
Did you complete the replacement?

Shifter not coming out park could be a problem with the shifter interlock system . Won't let driver shift into gear unless foot is pressing the brake pedal down .
locked light on ? Do you mean SECURITY light is lit on the instrument cluster . Anti-theft system disables fuel injectors if there is a problem .

Odometer/Gear Shifter (PRNDL) Display FIX - GMC/Chevy ...

? 4:15
https://www.youtube.com/watch?v=-PQ-x11Vjng
Jan 24, 2012 - Uploaded by EricTehRedneck
Odometer/Gear Shifter (PRNDL) Display FIX - GMC/Chevy ...grease, it does in fact help insulate electrical connections but imnot sure lithium would help. .... i have a 2000 Chevy Astro van the park indicator goes out when you start ... volts but now the battery light stays on and the transmission will not shift ...

GM Electronic Gear Indicator and Tripometer Odometer ...

? 5:47
https://www.youtube.com/watch?v=jTQIVS_uB4g
Aug 11, 2010 - Uploaded by zcomputerwiz
Didn't light up anymore. ... Symptoms: PRND321 and Tripometer/Odometer no longer light. ... 2002 which the odometer and shift indicator do not work no more. ... But before taking the dash out I would like to know how to remove those .... Instrument cluster gear select blank screen solder fix Chevrolet GM ...

Repair the odometer/PRND321 LCD display on a '99-'06 ...

www.instructables.com/.../Repair-the-odometergear-select-L...

InstructablesIn this Instructable, I will show you how to repair odometer/gear select ... Repair the

Will need a new instrument cluster

Here are the steps:

1. Undo the panels to the left and right of the steering column.
2. Remove the panel that encloses the instrument cluster.
3. Replace the light bulb located on the back of the panel (removed in step 2).
4. Reinstall the instrument panel (removed in step 2).
5. Reinstall the panels on the left and right of the steering column.

Here are the details:

FIRST - Disconnect the battery. Be careful to locate the radio security code and radio station memory locations before you disconnect though. I chose to disconnect the ground (black wire) from the battery. Be careful to put the cable away from the battery terminal.



Step 1: Undo the panels to the left and right of the steering column.
a. Put on your parking break. You'll want to prevent the car from moving because you will soon put the car in gear.
b. Put your keys and turn to the starting position (but don't try to start the car). This allows the gear lever to move.
c. Move the gear shift to lowest gear. This puts the gear shift lever to a place nearly out of the way of the panel so that you can pry it out.
d. Using bare hands, pull smartly on the plastic edge closest to the steering wheel. Pry out the panels by hand as they are both held by tabs. This is hardest to do the first time. Keep in mind that these are pieces of plastic, so be careful. Once panels are out, let them dangle. You only need access to the instrument panel screws.

Step 2: Remove the panel that encloses the instrument cluster.
e. Remove the 8 screws that keep the instrument cluster panel in place.
o Two on left of steering wheel
o Two on top of instrument cluster (upside-down)
o Four on right side of steering wheel
f. Wiggle/pry out the instrument cluster panel. Be careful as the center is held in stronger than the sides. In addition to screws, there are different tabs that assist in holding this in place.
g. Before removing the instrument cluster panel, disconnect the clock and emergency light electrical connectors. While the clock connector disconnects easily, the emergency light has a locking tab that needs to be pushed in to disconnect. I used a small screwdriver to push in the tab to get the connector to disconnect.
h. Remove the instrument panel. Turn it over and locate the clock's protective cover.
i. Open the clock's protective cover by loosening the tabs. Be very gentle to these tabs.
j. Once the cover is removed locate the light bulb.

Step 3: Replace the light bulb located on the back of the panel (removed in step 2).
k. Unscrew the light bulb and remove.
l. Install the new light bulb. Check the light bulb before you install it. Be careful when rotating the new light bulb. in place. I've read in other posts that the light bulbs are VERY sensitive. I used a small screwdriver with plastic on the head to screw the light bulb. in.
m. Replace the clock's protective cover.
o. Reconnect the clock and emergency light's electrical connectors.

Step 4. Reinstall the instrument panel (removed in step 2).
p. Fit the instrument cluster panel back into it's original position. Be careful with the fan vents. I suggest aligning the fan vents first, then fitting the panel.
q. Screw in the 8 screws that keep the instrument cluster panel in place.

Step 5. Reinstall the panels on the left and right of the steering column.
r. Push both panels back into place.
s. Move the gear shift lever back to park.
t. Remove the car key.
u. [Optional - disengage the parking brake]

LAST - Reconnect the battery.

TEST - Reinsert your keys and turn them to the starting position (but don't start the car). The clock light should light up.

Note: Because the power has been reset, you will need to enter the factory stereo code and reset your radio stations.