The Driver Information Center (DIC) 99 Montana is out

You can try performing a diagnostic self-test of the DIC.

In order to perform the diagnostic self-test and reset the driver information display, simultaneously press the following buttons for at least 2 seconds :

MODE
ENGLISH/METRIC
The reset is acknowledged with the display showing all segments ON for 1 second . You may only reset the following modes. The reset affects all 3 of these modes simultaneously:

AVG ECON
FUEL USED
AVG SPEED

If all of the segments light as described above, but the same symptoms are still present follow these instructions:

Symptom: Driver Information Center (DIC) Always Displays Dashes

1. Check for a poor connection or an open in circuit 800 (Tan wire) between the DIC connector terminal 15 and the Powertrain Control Module (PCM) connector C1 terminal 15.
2. If a problem is found with the circuit in step 1, repair the circuit and retest. Otherwise continue to step 3.
3. Replace the DIC and retest

REMOVE THE DIC CENTER SEE IF IT IS GETTING POWER.SHAKE WIRES SEE IF DIC CONTROL WILL LIGHT UP WITH IGNITION ON ENGINE OFF.IF POWER GOING TO DIC CENTER AND SHAKE WIRES YOU STILL DONT SEE THE OIL DISPLAY LIGHT UP.DIC CONTROL COULD BE FAULTY.

unfortunately you can't..

Under the driver's side carpet under the plastic trim piece there are a bunch of wires going all over .
Usually the orange wires are power to alot of things including the control unit for the PCM clean all the risty wires and resolder them usually fixes alot of other preoblems as well like not power windows from driver's side power locks not working and so on .....

By the way this is a moisture trap on these vans make sure they get taped properly after the fix

John

Pontiac Aztek, Montana 2001-05 w/o (DIC) Driver Information Center; Torrent, Ascender 2006

Turn the ignition to ON, with the engine off. Fully depress and release the accelerator pedal slowly three times within five seconds. Turn the key to OFF If the CHANGE ENGINE OIL’ message comes back on when you start your vehicle, the engine oil life system has not reset. Repeat the procedure.

Pontiac Aztek, Montana 2001-06 wI (DIC) Driver Information Center

urn the ignition to ON, with the engine off. Press the MODE button until the DIC reads ‘OIL LIFE LEFT/HOLD SET TO RESET Press and hold the SET button until 100% is displayed. You will hear three chimes and the “CHANGE ENGINE OIL” message will go off. Turn the key to OFF. If the “CHANGE ENGINE OIL” message comes back on when you start your vehicle, the engine oil life system has not reset. Repeat the procedure.

Good luck

Verify the wiring harness which passes under plastic step & carpet at front passenger side. This wiring harness goes from the firewall to the pillar on the right side and some have crimped connectors in them to act as junction between two or more wires (ususlly the 12volt feed), which deteriorate with time, especially with Salt & Water. Then the electric sliding door stops working and even driver the electric seat can loose power.

Yes, it can be removed and run without the thermostat. However, your gas mileage will suffer and the heater may not work very well.

The ecu is located under the Air filter housing on my 99 montana

guess you fixed