20 Most Recent 2000 Pontiac Grand Prix SE Questions & Answers


DTC P0401 Exhaust Gas Recirculation (EGR) Flow Insufficient - Probably has plugged passages . Take the EGR valve off the vehicle an clean the passages out .

2000 Pontiac... | Answered on Jan 19, 2019


Pontiac Grand Prix Climate Control/AC - Car Forums at Edmunds.com

forums.edmunds.com > Pontiac > Pontiac Grand Prix
Dec 29, 2007 - 30 posts - ‎20 authors Hi Joe, I had the same problem with no heat on my 2000 grand prix. .... motor and the exterior temperature sensor have both been replaced ... Pontiac Grand Prix Electrical/Lighting
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Fixing AC Temperature Control on my 2002 Pontiac Grand ...

? 9:58
www.youtube.com/watch?v=2BOdhWMdxXc

Jul 13, 2014 - Uploaded by Turbo231
Fixing AC Temperature Control on my 2002 Pontiac Grand Prix... How To Install Replace AC Heater ...

2000 Pontiac... | Answered on Oct 16, 2015


Whenever you add Freon,you are suppose to leak test first.Your compressor is good,you have a leak somewhere.A good place to take it to is Midas,they changed my freon over from the old stuff to the new R-134a,they leak test it first,that is rule 1 when adding freon.

2000 Pontiac... | Answered on Jun 11, 2015


It's called PWR / TRN relay an it is located in the under hood fuse / relay box .

Pontiac Cars &... | Answered 1 hour ago


It is located on the instrument panel fuse block. If you open the passenger door, there should be a removable panel on that side of the dashboard. In that fuse block, in position number 7, is the door lock relay.

Pontiac Cars &... | Answered 22 hours ago


nobody's gonna just know that off the top ov their head.u will need to get hold ov wiring diagrams and look at ignition system.but i'd probally say that it will be the ecu that controls this anyway.the easiest and cheapest way will be to buy yourself a new key or 2 through a dealership using your vehicles vin number expect they will need programming aswell.

Pontiac Cars &... | Answered on Oct 09, 2020


No taillights ? do the turn signals and the brake lights work ?

Pontiac Cars &... | Answered on Oct 05, 2020


Did you try hooking up a professional type scan tool an check codes in the BCM ,or the instrument cluster ? yellow wrench light tells you a problem in the BCM - body control module.

Pontiac Cars &... | Answered on Oct 04, 2020


Turn Signal Lamps
The body control module (BCM) is responsible for controlling the turn signals and hazard lamps. When the turn signal switch is placed in either the left turn or right turn position, the BCM receives a signal from the turn signal switch. The BCM then sends an on-off voltage signal to either the left or right turn signals and their instrument panel cluster (IPC) indicator. When the hazard switch is pressed, the BCM receives a signal from the hazard switch. The BCM then will send an on-off voltage signal to all the turn signal lamps. All the turn signal lamps will flash including both IPC turn signal indicators.
Stop Lamps
The body control module (BCM) is responsible for controlling the stop lamps. When the driver presses the brake pedal, the BCM will receive a signal from the brake pedal position sensor. The BCM then supplies battery positive voltage to both left and right stop lamp assemblies and to the center high mounted stop lamp (CHMSL). The stop lamps are grounded at G401 and G403. The CHMSL is grounded at G302.

Something is messing with the BCM'S mind ,bad input data ,shorted circuit etc... Hooking up a professional type scan tool is needed to read BCM DTC'S - diagnostic trouble codes an view live data to the BCM .

DTC B3948 02: Left Front Turn Signal Circuit Short to Ground
DTC B3948 05: Left Front Turn Signal Circuit Short to Battery or Open
DTC B3949 02: Right Front Turn Signal Circuit Short to Ground
DTC B3949 05: Right Front Turn Signal Circuit Short to Battery or Open

DTC B3950 02: Left Rear Turn Signal Circuit Short to Ground
DTC B3950 05: Left Rear Turn Signal Circuit Short to Battery or Open
DTC B3951 02: Right Rear Turn Signal Circuit Short to Ground
DTC B3951 05: Right Rear Turn Signal Circuit Short to Battery or Open

Your best bet ,take it to a qualified repair shop.

Pontiac Cars &... | Answered on Oct 02, 2020


The under dash wiring harness probably includes the stereo harness all in one wrapped bundle . And switching that out is a chore .

Pontiac Cars &... | Answered on Oct 01, 2020


Park, Tail and Marker Lamps
The park, tail, and marker lamps, including the license lamps, are turned ON when the headlamp switch is placed in the PARK or HEADLAMP position, or anytime the headlights are requested. The PARK LAMPS fuse in the rear fuse block supplies battery positive voltage to the PARK LAMP relay switch contacts. The PARK LAMPS fuse in the rear fuse block also supplies battery positive voltage to the PARK LAMP relay coil. When the park lamps are turned ON, the body control module (BCM) energizes the park lamp relay. Current flow is from the PARK LAMP relay to their respective park and marker lamps and to ground. Ground is provided at G101, G102, G401, and G403.

Fuse Block - Rear
Left side of the rear compartment, behind the left rear wheel well

6
PARK LPS Fuse
10A
PARK LPS Relay 27

Pontiac Cars &... | Answered on Sep 20, 2020


The instructions I have are 20 pages long, look in your owner's manual or maybe someone else will come up with a shortcut.

Pontiac Cars &... | Answered on Sep 06, 2020


wiring diagram for what sytem - headlamps , horn , instrument panel etc....

Pontiac Cars &... | Answered on Aug 29, 2020


5v ref goes to several different sensors. Could be a bad sensor, or wiring, or the ECM its self.

You'll need to isolate 5v ref at the ECM and then check the voltage at the 5V REF pin of the ECM with DMM. If you get 4.75 to 5.25 volts DC then likely the ECM is ok, but you'll need to load test.

If a load test of the ECM 5V REF passes then likely a sensor is bad or there's a damage wire... could be anywhere.

Try searching videos from "south main auto". Eric(?) does excellent videos explaining how to. Pretty sure he has videos specific to 5V REF.

Pontiac Cars &... | Answered on Aug 20, 2020


Utube or pinterest..or partstore freehelp. Dont git undr acar w out jackstands..ajack alone can move n fall..weargloves

Pontiac Cars &... | Answered on Aug 09, 2020

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