20 Most Recent 2003 Pontiac Montana - Page 2 Questions & Answers

Idle in drive at 600 to 800 rpm.

At the passenger switch its the Dark Blue and Brown wires.At the Master switch its the Light Blue and Tan wires. But I think your problem is a bad Master Switch

call any auto parts store to find exact location of heater core. yes you can bypass it, but you will have no heat inside of car, it needs to be replaced. to bypass just hook hoses from core together, without going through heater core.

Check the body control module. Everything runs through it.

The main wire on the back of the alternator has a fusible link and it is connected on the battery termanial on the starter . And there is also a fuse in the under hood fuse / relay box ALT/SENCE 10amp

First you need a wiring diagram, free at http://www.bbbind.com/free_tsb.html Then you need a DVOM - digital volt ohm meter to test the circuit . Then if your not familiar with automotive electrical systems testing ,go on youtube an check out Electric Testing Techniques You Need to Know Also having a factory diagnostic trouble shooting chart would also be usefull . You could just start replacing parts , you mite get lucky . The wiper motor is a high fail part , so is the switch ..You could find the fuse is blown ! But fuse's don't usually blow without a reason . Short to ground , low resistance . ( high current flow) Also knowing how they work and what all is involved in making them work. The Wiper/Washer System consists of the following components: • Windshield wiper/washer switch • Windshield wiper motor module • Windshield wiper motor • Windshield washer pump motor • FRT/WPR/WSHR 25A fuse Wiper/Washer System Operation The windshield wiper motor module is part of the windshield wiper motor cover and controls wiper motor operation. The windshield wiper motor is a 2 speed motor and is operated at low speed in all modes except HIGH. The accessory voltage supply circuit to the windshield wiper motor assembly is used to operate the wiper motor in all of the low speed modes. The accessory voltage supply circuit to the windshield wiper/washer switch is used to supply the windshield wiper switch signal circuits and the wiper motor high speed circuit. When the wiper/washer switch is in the LOW position voltage is supplied through a 24K ohm resistor within the switch to the windshield wiper switch signal 2 circuit, and accessory voltage is supplied to the windshield wiper switch signal 1 circuit. The reduced voltage from the wiper switch signal 2 circuit and accessory voltage from the wiper switch signal 1 circuit causes the wiper motor module to close the wiper motor accessory voltage supply circuit to the wiper motor low speed terminal. Windshield wiper/washer system MIST operation is identical to LOW operation except that the MIST switch is a press and release type. When the wiper switch is moved to the MIST position and released, low speed wiper motor operation is started and will continue until 1 cycle is complete. If the wiper switch is moved to the MIST position and held, the windshield wiper motor will operate in the LOW mode until the switch is released. Don't the wipers work in any mode ? 1 Did you review the Wiper/Washer System description and operation and perform the necessary inspections? YES - Go to Step 2 NO - Go to Symptoms - Wiper/Washer Systems 2 Turn ON the ignition , with the engine OFF. Operate the windshield wiper/washer switch through all the switch positions. Does the windshield wiper/washer system operate normally? YES - Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems NO - Go to Step 3 3 Turn OFF the ignition. Disconnect the harness connector of the windshield wiper motor. Turn the ignition ON, with the engine OFF. Connect a test lamp from the accessory voltage circuit of the windshield wiper motor to a good ground. Does the test lamp illuminate? YES - Go to Step 4 NO - Go to Step 13 4 Connect a test lamp from the accessory voltage circuit to the ground circuit of the windshield wiper motor. Does the test lamp illuminate? YES - Go to Step 5 NO - Go to Step 14 5 Connect a test lamp from the signal 2 circuit of the windshield wiper switch to a good ground. Press the windshield washer switch. Does the test lamp illuminate? YES - Go to Step 11 NO - Go to Step 6 Let me know if you make it this far and i will send rest of diagnostic's

Is your heater blower motor working on all speeds ? Are you get any air coming from the rear vents ?

Tengo una Pontiac montana 2001 y quiero cambiar las bujias traseras me podrian decir como le podria haser para quitarlas estan muy escondidas

Check the harmonic balancer. That is the the pulley that is attached to the crankshaft. The outer ring of the pulley, where the belt rides, is pressed onto the hub of the pulley and isolated from it by a rubber bushing that separates the outer ring (belt pulley) from the inner part that is attached to the crankshaft. The rubber will dry out and shrink as it ages and the outer ring will slide in or out (front or back), causing belt misalignment. This can cause stripping and jumping off as it doesn't provide the proper path for the belt. The new balancer is fairly easy to install, and they only cost about $60.00 USD. You need a harmonic balancer puller to remove it, but most auto parts stores will provide a loaner for the DIYer. Here is a picture of the one that goes on your Montana.....

Set the alarm on the car again. Wait 5 minutes unlock and try to start again. If that doesn't work... try unhooking the battery to reset. Wait 10 minutes. Hook it back up & that should do it. I traded my car in because if this issue. Bonneville.. hope this helps.

Check battery and connection.

Removal Procedure Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components. Caution: Batteries generate hydrogen gas, which is extremely flammable and may explode violently if ignited by a spark or a flame. Battery acid is extremely corrosive and causes severe personal injury if the acid comes into contact with the skin, and blindness if the acid comes into contact with the eyes. In order to avoid severe personal injury, use extreme caution when servicing the battery or battery-related components.

1. Remove and reposition the underhood electrical center. Refer to Underhood Electrical Center or Junction Block Replacement in Wiring Systems.
2. Remove the front end sheet metal diagonal brace. Refer to Front End Sheet Metal Diagonal Brace Replacement - Right Side in Body Front End.
3. Remove the battery ground (negative) cable from the battery. Refer to Battery Negative Cable Disconnection and Connection .
4. Remove the battery positive cable from the battery.

Remove the battery hold down retainer. Important: Do not tip the battery more than 40 degrees. Remove the battery insulator from the battery. Remove the battery.

If it cranks over good. Look at the fuel pump. Next time spray fast start in the throttle, if it starts, replace the pump. If it only clicks when hot, replace the starter.