Question about 2008 Pontiac G6 Sedan

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Pontiac g6wont start

I put on a used low mileage computer now my car won't even turn over help

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The computer for your car has a specific program for that car. You need to have the second computer flashed with your program, mileage and VIN number. It is extremely rare that a computer from another car, even the exact car, will work without the program being flashed.

Posted on Mar 22, 2014

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Posted on Jan 02, 2017

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2006 Pontiac g6 is tweaking put bad. Gauges drop and stay down. Engine acts like it has no power. Can't accelerate. Sometimes the power steering stops workings and sometimes the car won't start. Won't...


Replace the ECU computer, or better yet take to a garage to put a diagnostics unit on it,it will tell you what's wrong straight away so you don't waste money replacing the wrong thing.

Jan 20, 2018 | Pontiac Cars & Trucks

1 Answer

Will not start


Hey Sidney. On G6 it has a pass lock anti theft- in which your key is programmed into the computer. If the key is not programmed into the computer or ECM, then nothing at all, heres the steps, and where it says a new cut key on 1, ignore that, just use your key, and also you will need to take your g6 into the dealership and have them reflash the ECM, and program the VIN number into your new ECM, if not it might throw the check engine light.

1. Insert a new cut key in ignition and turn key to the ON position for
10 minutes and 30 seconds.

2. Within 45 seconds turn the key to OFF and then back to the ON position for
10 minutes and 30 seconds. 3. Within 45 seconds turn the key to OFF and then back to the ON position for
10 minutes and 30 seconds.

4. Turn key OFF then back ON. The key is now programmed.
Start vehicle to test key.

Mar 22, 2014 | 2008 Pontiac G6 Sedan

1 Answer

Put on good used low milage computer now wont start


check if have the same numbers en the tag because sometimes it's different code if is the same the computer is not good

Mar 22, 2014 | 2008 Pontiac G6 Sedan

1 Answer

Oil type for my 2002 firebird


You can use 5w30 - 5w20 - or 10w30 depending on the air temp and your mileage.
Low mileage engines can use the lower weight. Hot weather or high mileage engines can use the higher weight.

Aug 27, 2013 | 2002 Pontiac Firebird

1 Answer

So I changed the oil in my friend car and she has really high mileage on it so I put 10W-30 in it for high mileage an now it won't start can you help me out please


I would suggest a full synthetic oil, next time & stay with 5W-30
That will be better on start up

I have no idea why it won't start after only changing the oil

I think that was just a coincidence

I just installed a new throttle body ,because the motor has
acted up for 7 months & unknown the battery was failing
as I was diagnosing some odd behaveour

I was using professional scan tool software & when that
went weird I saw the computer module & battery voltages
going down,key on,engine off. So strange things happen
with todays electronics. When your think your on your game
things go to the twylight zone

May 23, 2012 | 1997 Chevrolet Lumina

2 Answers

Oil light on car won't start


normally i would say if it ran low on oil and now the engine wont turn over, i would suspect internal engine damage. But, have someone check first to be sure it isnt something easy like a battery connection or starter

Jan 28, 2012 | 2005 Pontiac Vibe

1 Answer

Hello I have a problem with my Pontiac 2002 Trans Am - Collector Edition. It does not want any more to start, there is the indicator SECURTITY which east lights, and since average making it...


Check the battery voltage with a multimeter. If the battery can't deliver a full 12 volts, the starter solenoid won't even activate. It may be that a cell went dead, causing a direct short inside the battery. Replace the battery if your battery is older than 3 years, or take it to an auto parts store to have it tested. The security light on is an issue many people have when the battery is low and the car won't start.

It is also possible that the security chip on the ignition key is worn. If it isn't making contact properly, the computer won't 'read' the resistor, and won't start. You will need to replace the key to see if this fixes the problem.

Aug 17, 2011 | 2002 Pontiac Firebird

3 Answers

Low tire pressure warning


Look under the steering wheel~way up under the dash there is on some Pontiacs a reset button. It is usually yellow. If this does not work you can try disconnecting the battery to clear the ECM.

Apr 22, 2009 | Pontiac Grand Prix Cars & Trucks

1 Answer

Burning oil, but dont know why


Nowdays 1 Qt. in 3000 miles, really isn't that bad, even some new vehicles claim that's normal. I know with my current vehicles, both at approx. 150,000-160,000 miles, they won't use any for first while after an oil change, but then after mileage starts adding up again, they start to use a little, approx.I Qt, every 1000 miles or so, until it's changed again. I've switched to the high mileage oil, just for piece of mind, as they say it revives seals, and has added protection for the higher mileage engines.This time around I'm thinking of adding "Lucas" & see how it works, as I've heard some pretty good reports on it, just to see if it will prolong that oil breakdown, at mid change.

Feb 06, 2009 | 1999 Pontiac Grand Prix

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