Tag Archives: Pontiac Grand Prix

Pontiac Grand Prix car questions and answers from expert dealership mechanics. Ask us in our free live chat or repair forums.

Engine RPM Jump Before Shifting 1999 Grand Prix

Question: Hi I have a 1999 Pontiac Grand Prix. I am starting to think that there is something wrong with the shift solenoid. The car is still in good mechanical condition, the check engine light never comes on, even though it still works. I will be driving, at any speed, and when it comes time…

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My Pontiac Has Intake Gaskets Leaking- Is It Safe To Drive?

I took my 2001 Grand Prix 3800 V6 engine (130,000 miles) into the dealer for a bit overdue oil change. After doing the courtesy inspection, a mechanic familiar with my car fills out a form with some problems I should get fixed, the main one being that the intake is leaking coolant. I’ve been keeping…

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How To Replace Pontiac Grand Prix Ignition Cylinder

My 1994 Pontiac Grand Prix se ignition went out of it. The key has the chip in it. I cant lock my car anyhow. So wondered if i could replace that ignition with a regular ignition with a key with no chip in it? I don’t want the chip in the key it means nothing…

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Pontiac Brake Fluid Leak Repair And Diagnosis

We bought a 2000 Pontiac Grand Prix GT with 81,000 miles on it less than a week ago. The brakes have gone out. At first we thought the brakes were just wet and that is why the car would  not stop properly, so we waited for them to dry off and tried again. Later in…

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2004 Pontiac Grand Prix Catalytic Converter I/M Flag Not Ready

2004 Pontiac Grand Prix with a “2” motor will not go “Ready” with the catalytic converter test for I/M testing. I went in the service manual and did the testing for P0420 where you run the car for 1 minute in park then put in in drive while observing air/fuel mixture. The readings change from…

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1999 Pontiac Grand Prix Vents Hot On Drivers Side- Cold Passenger Side

1999 Pontiac Grand Prix. When I turn my heat on I get heat on the drivers side and A/C cold temperature coming out the passenger side. Same thing happens if I turn on the A/C. This is a common problem with a temperature door actuator motor in the dash. A problem with air temp on…

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Pontiac Grand Prix Catalytic Converter And ABS Codes

Check engine light codes problem with my 2002 Pontiac Grand Prix GT. 3.8L non supercharged. ABS, Track Off and Service engine soon. GM Computer codes  C0045, C0046, C0245, P0303, P0420, P0172. Reason for code P0420 is because I don’t have a catalytic converter. Ever since I retrieved the code P0303 I have changed all of the…

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2003 Pontiac Grand Prix Transmission And Catalytic Converter Codes

I have a 2003 Pontiac Grand Prix GT with a 3.8L Series II engine. I am having 2 different issues with this vehicle. First, the transmission has started jerking hard into gears. It seems that it only does it once the car gets up to a normal operating temperature. I will be stopped at a…

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2001 Pontiac Grand Prix Check Engine Light

I recently replaced my EGR valve because the check engine light code came up on my car, along with that I also had to replace my catalytic convertor, from what the mechanic I went to said, is that the bad EGR valve caused the catalytic converter to clog, I don’t know how true this is because…

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2002 Pontiac Grand Prix Transmission Or Catalytic Converter

I have a 2002 Pontiac Grand Prix. Over the last few weeks i have had trouble with the can being jerky while accelerating also i tends to do this more the warmer the car gets ie: runs good in the am but by lunch time it’s acting up. Also i noticed this morning that the…

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1997 Pontiac Grand Prix Engine Overheating

Hello first time here, just looking for a little help or a lot, well here is my issues. I purchased a 1998 Pontiac Grand Prix gt 171k. It had a blown headgasket, so did all repairs, valve job, new water pump, ect sensor, t-stat, upper and lower hoses, replaced radiator not new but good. Also…

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2001 Pontiac Grand Prix Chugs And Hesitates

Hello. I have a 2001 Pontiac Grand Prix. When i press on the gas pedal, the car sort of chugs. I always use good gas. This started happening more when it is raining or very damp outside. Don’t know if that is just coincidence or not. With the problem happening more when it is damp…

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