Pontiac Cars & Trucks - Recent Questions, Troubleshooting & Support


Disconnect battery + two bolt 17mm straight up from bottom let starter down 13mm nut primary hot from battery 8mm ignition wire if it has shim to space to go back like they came out

Pontiac Cars &... | Answered 9 minutes ago


Check for vacuum leaks, fuel pressure and fuel filter. Also clean the throttle blades on the Throttlebody.

Pontiac Cars &... | Answered 2 days ago


I believe that you would still need it for the heater function.

1979 Pontiac... | Answered 2 days ago


The instrument voltage regulator is usually found behind the instruments, often attached to the printed circuit.

The charging or alternator regulator would usually be found inside the alternator on most vehicles by 1994. Japanese vehicles used a discrete electro-mechanical regulator longer than most types and some commercial vehicles used a discrete electronic regulator longer than passenger vehicles.

Pontiac Cars &... | Answered 3 days ago


Yes, you will need to transfer anything that is different from one engine to the other, but the blocks are the same.

Pontiac Cars &... | Answered on Oct 10, 2019


What door lock doesn't always work ? One or all of them . This is a complex set up for these door locks ! The switch is an input to the BCM - body control module . There is logic involved in the microprocessor , there are relays built in to the BCM ! Could have a DTC - diagnostic trouble code stored in the BCM ! Could be a bad connection at the BCM or master window switch ! A bad ground !
The power door lock system consists of the following components:
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Body control module (BCM)


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DOOR LKS fuse


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Driver door lock actuator


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Driver door lock switch


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GMLAN serial data link


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Keyless entry transmitter


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Passenger door lock actuator


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Passenger door lock switch


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Remote control door lock receiver (RCDLR)


The DR LCK fuse supplies battery voltage to the body control module (BCM) for the power door lock system. The BCM supplies and monitors a reference voltage to the driver and passenger door lock switches through the door lock switch lock/unlock signal circuit. Each door lock switch receives ground at G300 which is also the ground for the door lock and unlock relays located in the BCM. When a door lock switch is placed in the lock position, the reference voltage is switched to ground and the BCM senses 0.0 volts on the door lock/unlock signal circuit. When a door lock switch is placed in the unlock position, the reference voltage is switched to ground through a 1.5k ohm resistor that is internal to each of the door lock switches and the BCM senses approximately 2.9 volts on the door lock/unlock signal circuit. The BCM interprets what position the activated door lock switch was placed in based on the voltage drop.
The BCM, upon receipt of a lock or unlock switch signal, will switch the appropriate door lock/unlock relay coil control circuit to ground causing the appropriate door lock/unlock relay to energize. With the relay energized, voltage is applied to the door lock actuator control circuit causing the door to either lock, or unlock depending on what command was received from the power door lock switch or remote control door lock receiver (RCDLR). When a power door lock/unlock relay is not energized, the switch contacts are normally grounded through the BCM which provides ground to the appropriate door lock actuator for the lock/unlock function being performed. The power door lock/unlock functions are performed by reversing the flow of voltage through the door lock actuator control circuits. The BCM has three internal drivers for the power door lock system. Driver door unlock, passenger door unlock and all door lock. This is done to isolate the driver door lock actuator so it can be unlocked separately from the passenger door. For additional information concerning keyless entry, refer to Keyless Entry System Description and Operation.
This is one you may want to take to dealer or some other ASE certified repair shop ! To do this right you need a Tech 2 scan tool !
Ignition ON, observe the scan tool Door Lock Switch parameter while using the driver and passenger door lock switches. The parameter should change from Idle to Lock and Unlock.
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If the value does not change, refer to Door Lock Switch Malfunction.

Command the doors to LOCK and UNLOCK with the scan tool, the door lock actuators should LOCK and UNLOCK when changing between the commanded states.
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If one or more doors do not LOCK or UNLOCK, refer to Door Lock Malfunction.

2009 Pontiac... | Answered on Oct 09, 2019


The spare is under a panel behind the right rear tire. There are several videos on line that show you how as it isn't really obvious.
https://www.carcarekiosk.com/video/1999_Pontiac_Firebird_Formula_5.7L_V8_Convertible/tires_and_wheels/change_a_flat_tire

Pontiac Cars &... | Answered on Oct 09, 2019


The wiper park switch in the wiper motor is defective is my guess.

2001 Pontiac... | Answered on Oct 07, 2019


I would bet these are controlled by some type of motor relay or wiper control module. I would browse a Haynes Manual (www.haynes.com) and see there is a part that could be easily acquired new or used from a salvage yard.

2000 Pontiac... | Answered on Oct 07, 2019


check ground strap to wiper motor if ground is ok the park position is malfunction replace motor

2000 Pontiac... | Answered on Oct 07, 2019


On the HVAC plenum under the dash at the right side near the middle. This is very hard to get at - check YouTube for a picture to help you.

Pontiac Cars &... | Answered on Oct 03, 2019


2004 was the last year for the montana and it was exactly the same as the 2001. In terms of the tilt lever, they were all the same. Just grab it and pull straight out from the column.
You can use a screwdriver to pry if its too hard. Utube has several videos demonstrating the technique.

2006 Pontiac... | Answered on Oct 01, 2019


On my 2001 van I can just reach under the rear of the seat and pull a metal bar back to release the seat while it's still upright. If you don't have a bar, feel around underneath for a wire that will pull the two release levers up.

2004 Pontiac... | Answered on Oct 01, 2019

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