Unfortunately, GM really screwed up the 2003-2006 instrument panels and there have been thousands of problems but not recalls so far. You might want to consider a complete rebuild of your instrument cluster. There are multiple on-line places that you can send your instrument panel into and they will completely rebuild your instrument cluster and replace the dashboard lighting also. Most of them charge in the $200.00 range for this service.
There should only be 1 bolt holding the arm in place and it should be accessible from the top side. Not exactly an easy process but doable.
Here's a video of process. Can't see a lot because of the camera angle and the confined area, but it should give you a general idea.
You can skip to approx. 6:20 to get to the actual extraction and 7:35 for the replacement if you don't want to hear all the general rambling.
Hope this helps.
get a pressure test on radiator via a radiator cap that has a pressure gauge with the engine running . The head gasket is probably blown on the engine and this can cause exhaust pressure to go into the cooling system and create this symptom you are experiencing.
you may also have more expensive problems like a warped head or cracked head . $$$$$ - remachining or welding and remachining of engine head and a blown gasket .
The starting /keep running issue is probably a slow IAC (idle air control)Next time turn the key on,wait 3 or 4 seconds then start,if it keeps running after that wait time everytime,it most likely is the IAC,,,,,,no big deal.
How long does the van sit when it has a dead battery?
The radiator may be plugged or the head gasket can let compression gasses into the radiator . To check, run the engine without the radiator cap and look in to see if there any bubbles in the coolant. If there is a lot of coolant moving in the radiator after the T/stat has opened, the water pump is ok. If not then suspect the water pump is not circulating enough water.
Park lamp fuse 20amp located in the under hood fuse box .DRL control module
Daytime Running Lamps (DRL) Control Module
Right of the steering column, behind the IP
Park, Sidemarker, Tail and License Lamps
Voltage is applied continuously to the PARK fuse to the headlamp and the instrument panel (IP) lamp dimmer switch through CKT 1340.
When the headlamp and the (IP) lamp dimmer switch is in the PARK or HEAD position, voltage is applied to CKT 9 thus activating the following lamps:
• The park lamps
• The side marker lamps
• The tail lamps
• The license lamps
The park/turn lamps are the only lamps that do not activate yet receive a current from CKT 9. The park/turn lamps do not activate because the voltage drop across the front side marker lamps is much higher than that across the turn lamp filaments
Step
Action
Normal Result(s)
Abnormal Result(s)*
1
Turn the headlamp/instrument panel (IP) lamp dimmer switch to the PARK position.
The following lamps light:
• The license plate lamps
• The taillight lamps
• The front side marker lamps (Domestic)
• The front parking lamps (Domestic)
The headlamp position lamps (Export)
Refer to Park Lamps Inoperative
Park Lamps Inoperative
Step
Action
Value(s)
Yes
No
1
Inspect the PARK LP fuse.
Is the fuse open?
--
YES - Go to Step 2
NO - Go to Step 3
2
Repair a short to ground in CKT 1340.
Is the repair complete?
--
Go to Exterior Lights System Check
--
3
Turn the headlamp/instrument panel (IP) lamp dimmer switch to the PARK position.
Use a test light in order to backprobe the headlamp/IP lamp dimmer switch harness connector between terminal R and ground.
Did the test lamp light?
--
Go to Step 7
Go to Step 4
4
Use a test light in order to backprobe the headlamp/IP lamp dimmer switch harness connector between terminal O and ground.
Did the test lamp light?
--
Go to Step 5
Go to Step 6
5
Replace the headlamp/IP lamp dimmer switch. Refer to Headlamp Switch Replacement .
Is the repair complete?
--
Go to Exterior Lights System Check
--
6
Repair the following conditions in CKT 1340 between the PARK LP fuse and the headlamp and the IP lamp dimmer switch harness connector terminal O:
• A faulty connection
• An open circuit
Is the repair complete?
--
Go to Exterior Lights System Check
--
7
Repair the following conditions in CKT 9 between the headlamp and the IP lamp dimmer switch harness connector terminal R and S204:
• A faulty connection
• An open circuit
Is the repair complete?
--
Go to Exterior Lights System Check
Recommended GM DEXRON® VI, Low viscosity transmission fluid. Note: make sure you don't over fill transmission and the Montana's transmission are know for failures due to high fluid retention caused by high viscosity transmission fluid from additives or dirty transmission oil and filter. Thank you for using Fixya and good luck.
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/METRICThe 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 SPEEDIf 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 Dashes1. 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
Have you checked under the dashboard yet? Today's cars and trucks have two fuse boxes. The first is on the driver's side of the vehicle, usually under the kick flap to the left of the brake pedal. There should be a pop-off cover or box located on the firewall that contains a number of fuses. It isn't likely to be a fuse fault, though.
It sounds like you are experiencing problems with a thermocouple style switch. In other words, when the the switch or device reaches a certain temperature, it switches off.
To find this particular device, you will have to obtain a service manual for the electrical and fan systems and then you will have to find the diagrams that cover the fan. Study them and you will likely find that there is a special symbol there that shows there is a heat-activated or thermocouple switch. If you identify it and feel comfortable handling the job, remove the old switch and swap in a new one. The chances are good that this is the whole problem. I honestly doubt it was a fuse in the first place.
One other suggestion is this, look to see if there might not be a cooling system switch that handles this function. You'll need the service manual for that, too.
It is in the instrument panel fuse box ,
Fuse Block
Right side of the IP, in the right front door opening
STOP LAMP 15A - Stop Lamp Switch to Stop Lamps
code p0452 refers to evaporative emission ( EVAP) pressure sensor--low input ===causes wiring short to ground--EVAP pressure sensor---ECM
check for wiring problems from chewed wires form leaving it unattended
check replace the pressure sensor.
