2005 GTO Ignition/security problem

Asked by Sep 29, 2010 at 04:22 PM about the 2005 Pontiac GTO Coupe

Question type: Maintenance & Repair

Hey folks. I have a 2005 GTO. Lately what has been happening is two things:
1) Turn the key & 'CLICK'.....does not turnover. All lights are on, etc. Just put a new Optima battery. Starter? maybe. But it only does this infrequently & when it does act up, if you keep turning the key, eventually it turns over & starts.
2) While driving the security light will come on (the light that has a pic of the car & pad lock intertwined). Car keeps running & if you hit a bump, it will either flicker or just go out.

Could both problems be related? And does anyone have any ideas what could be happening or what I should do?

Thanks for any help....I really appreciate it!

6 Answers

7,545

key fob possibly has something wrong with it?

1 of 1 people found this helpful.
35

The second problem leads me to think it's a problem with your key, like the bump could be causing a connection inside your key to break and then reconnect. The first problem would then fit because sometimes while you're turning your key it's hitting the connection and sometimes not.

115

it could be your ignition switch there is a new ignition switch old #92172018 new #92234035 like 38.00

60

I had a similar problem. Was a,wire behind the glove box rubbing due to vibrations. An electrical shop found and fixed for 108.00. :)

2 of 2 people found this helpful.
10

I fixed this 2 years ago when I had the EXACT same problem. Here was the fix: The problem is actually an issue with the "autolock" security feature from the poorly designed GMC/Pontiac system. It is a system where the metal nipple on your key fob and the actual key are connected electrically, creating an electric circuit when you contact them to the ignition ring and keyhole. The circuit in your key fob creates 180-200 ohms of electrical resistance, and ANYTHING to take it out of a strict set of electric-resist parameters will throw the dreaded and god-awfully annoying Autolock system out of wack. The autolock will think your car is being stolen by someone who broke your ignition lock and is using a screwdriver to start the engine, which of course isn't the case. To solve this, I had a car audio tech disconnect the key's autolock circuit entirely (inside the steering column, not the key), and solder/insert a tiny resistor into the security circuit instead, with 180-200 ohms (or whatever your finnicky security system requires) to fool your car into thinking the key is properly connected with the electric resistor "autolock" security function. Problem solved, haven't had an issue since.

1 of 1 people found this helpful.

GTO_2004_Driver what color is the wire?

Your Answer

GTO

Looking for a Used GTO in your area?

CarGurus has 488 nationwide GTO listings starting at $5,995.

ZIP:

Pontiac GTO Experts

  • #1
    Rucko
    Reputation
    780
  • #2
    Norm Davis
    Reputation
    350
  • #3
    F_O_R
    Reputation
    200
View All

Related Models For Sale

Used Ford Mustang
608 Great Deals out of 36,209 listings starting at $1,800
Used Chevrolet Corvette
197 Great Deals out of 19,860 listings starting at $2,490
Used Dodge Charger
428 Great Deals out of 28,081 listings starting at $2,490
Used Cadillac CTS-V
3 Great Deals out of 632 listings starting at $8,490
Used Ford Mustang SVT Cobra
8 Great Deals out of 298 listings starting at $4,995
Used Pontiac Grand Prix
24 Great Deals out of 2,726 listings starting at $1,500
Used Chevrolet Silverado 1500
2,237 Great Deals out of 168,220 listings starting at $995
Used Chevrolet Impala
548 Great Deals out of 35,116 listings starting at $1,250
Used Mitsubishi Lancer Evolution
12 Great Deals out of 579 listings starting at $10,000
Used BMW M3
34 Great Deals out of 1,979 listings starting at $6,995

Used Cars For Sale

2006 Pontiac GTO Coupe For Sale
125 listings starting at $7,888
2005 Pontiac GTO Coupe For Sale
5 Great Deals out of 84 listings starting at $8,995
2004 Pontiac GTO Coupe For Sale
6 Great Deals out of 129 listings starting at $5,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.