20 Most Recent 2004 Pontiac Montana Questions & Answers


Do the A/C pipes going in through the fire wall get cold ( icy) ? Temp blend dood actuator possibly .Does it have A/C system in the back as well ? Auxiliary - does it get cold ?

Air Temperature Actuator
The air temperature actuator is a 3 wire bi-directional electric motor. Ignition 3 voltage, ground and control circuits enable the actuator to operate. The control circuit uses a 0-12 volt linear-ramped signal to command the actuator movement. The 0 and 12 volt control values represent the opposite limits of the actuator range of motion. The values in between 0-12 volts correspond to the positions between the limits.
When the HVAC control module sets a commanded, or targeted, value, the control signal is set to a value between 0-12 volts. The actuator shaft rotates until the commanded position is reached. The module will maintain the control value until a new commanded value is needed.
Have you hooked up manifold gauge's to check pressures ?

2004 Pontiac... | Answered on May 25, 2018


Here's a series of videos that explains how to replace the serpentine belt on your 2004 Montana.

http://www.wonderhowto.com/how-to/video/how-to-change-a-serpentine-belt-on-your-car-39904/

Here's a diagram to help you remember how to rout the new belt...

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2004 Pontiac... | Answered on Mar 01, 2018


faulty starter solenoid possibility, if it doesnt start give the starter a tap with a wrench if it starts after that change solenoid or replace starter.

2004 Pontiac... | Answered on Jan 03, 2018


Did you bleed the coolant lines to let all of the air out? If there's air in the lines, you will have the issues you're describing.

2004 Pontiac... | Answered on Dec 30, 2017


You may have a defective starter solenoid due to burned main battery contacts, very common on newer gear reduction starters.

2004 Pontiac... | Answered on Dec 26, 2017


This may be related to the BCM (body control module) it can be self tested to see if any faults are present.

2004 Pontiac... | Answered on Jul 28, 2017


Make sure when you add coolant that the heater is turned on full blast and at the hottest setting. That will allow the thermostat to open and your cooling system to take more coolant.

2004 Pontiac... | Answered on Jul 26, 2017


It could be a bad fuel gauge in the dash unit, but....
Usually it's "The bad".
The fuel level sending wipe arm and windings on the fuel sender wear and send erratic readings.The only cure is a replacement fuel gauge sender.
The check engine light should not be related to the erratic fuel readings.
"The good".
If you have over 200,000kms or 120,000 miles on your van you need a new fuel pump anyway,so have a complete assembly put in which will have a new fuel sender on it.

2004 Pontiac... | Answered on May 28, 2017


good year are tire people trying to be mechanics
take it to an accredited service shop that has experience on your make of vehicle
have the new service center run the fault codes which is what goodyear should have done first up

2004 Pontiac... | Answered on May 23, 2017


First, could be defect alt, bad connection at battery conns. or you probably have an electrical short if all else cks out good. Did u ck the load test the bad,ck the charging system & ck for shorts before u did the work?

2004 Pontiac... | Answered on Dec 11, 2016


if it has one they usually place them in a freeze plug hole .

2004 Pontiac... | Answered on Dec 09, 2016


The horn itself may be faulty, disconnect it and use a voltmeter to see if the voltage changes on the wires feeding it when someone presses the horn button. Most horns are 12V so you should also be able to connect the horn directly to the battery to see if it works. Just get the polarity correct.
The horn switch harness. (the switches and wiring in the steering wheel) Disconnect the negative battery connection before attempting to check this as the air bag is also in that area.

2004 Pontiac... | Answered on Nov 23, 2016


Check the fuses and relays in the underhood fuse compartment if the fuses related to suspension are good, most likely the compressor is bad

2004 Pontiac... | Answered on Nov 10, 2016

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