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Old Oct 28, 2004 | 03:39 PM
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Default Gas cap question

When I press the gas tank fill door release I open the door and the gas cap is loose. I always tighten it to three clicks. Does releasing the door somehow turn the cap?


TIA
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Old Oct 28, 2004 | 04:10 PM
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Originally Posted by OrangeVegaGT
When I press the gas tank fill door release I open the door and the gas cap is loose. I always tighten it to three clicks. Does releasing the door somehow turn the cap?


TIA
No not on my '03 Coupe it doesn't.
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Old Oct 28, 2004 | 04:33 PM
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Three Clicks? Something isn't right I don't remember "clicking." It seems like turn a 1/4 turn and it locks. This isn't like "normal" gas caps where you turn and let it click like a torque wrench. I suspect you aren't turning it sufficiently and it is clicking making you think it is on. Look at it closely
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Old Oct 28, 2004 | 04:48 PM
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Mine always clicks. I always over tighten it since I've gotten check engine lights on previous GM vehicles for loose gas caps. I think it has something to do with pressure in your fuel tank.
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Old Oct 28, 2004 | 04:51 PM
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My 03 coupe clicks when I tighten it but never comes loose when opening the lid.
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Old Oct 28, 2004 | 05:03 PM
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Originally Posted by Gimmesum HP
Mine always clicks. I always over tighten it since I've gotten check engine lights on previous GM vehicles for loose gas caps. I think it has something to do with pressure in your fuel tank.
But it's not just GM products - my wife had a Chrysler 300M, and it threw a code for the same reason. Emission controls require the gas tank to be a sealed environment to prevent evaporating fuel from escaping the tank - if there's a leak in the system, a code will set.
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Old Oct 28, 2004 | 05:08 PM
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No, it should not loosen it at all.
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Old Oct 28, 2004 | 05:15 PM
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From page 5-9 of the 2003 owner's manual:

When you put the fuel cap back on, turn it to the right (clockwise) until you hear a clicking sound. Make sure you fully install the cap. The diagnostic system can determine if the fuel cap has been left off or improperly installed.
Your cap may need replacing. When replacing, it is important to get the right type. You may want to read what your owner's manual has to say about this and the Notice printed there.

Good luck.

Last edited by GrayC5; Oct 28, 2004 at 05:36 PM.
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Old Oct 28, 2004 | 05:47 PM
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Originally Posted by Corvette00Car
Three Clicks? Something isn't right I don't remember "clicking." It seems like turn a 1/4 turn and it locks. This isn't like "normal" gas caps where you turn and let it click like a torque wrench. I suspect you aren't turning it sufficiently and it is clicking making you think it is on. Look at it closely
When the gas cap is installed properly, you should hear a clicking sound. You may want to read what your owner's manual has to say about this.
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Old Oct 28, 2004 | 06:04 PM
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I had the same problem on my '04... your cap is defective. Dealer replaced mine and no more problems!
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Old Oct 28, 2004 | 06:56 PM
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Forget 3 clicks... Just give it a twist of your wrist. 3 clicks, 10 clicks, it doesn't matter. I don't count 'em! Been driving GM's since all this emission crap, and you just turn the cap and when it starts clicking, give it a nice twist and close the door. It won't overtighten the cap, and it saves the silly check engine light from coming on, and you won't have a loose cap next time you fill up.
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Old Oct 28, 2004 | 07:17 PM
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Originally Posted by CE2004
Forget 3 clicks... Just give it a twist of your wrist. 3 clicks, 10 clicks, it doesn't matter. I don't count 'em! Been driving GM's since all this emission crap, and you just turn the cap and when it starts clicking, give it a nice twist and close the door. It won't overtighten the cap, and it saves the silly check engine light from coming on, and you won't have a loose cap next time you fill up.
I give it at least a 1/2 twist. But I am **** and get the decal right side up.
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Old Oct 28, 2004 | 08:21 PM
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Default One click

Originally Posted by CE2004
Forget 3 clicks... Just give it a twist of your wrist. 3 clicks, 10 clicks, it doesn't matter. I don't count 'em! Been driving GM's since all this emission crap, and you just turn the cap and when it starts clicking, give it a nice twist and close the door. It won't overtighten the cap, and it saves the silly check engine light from coming on, and you won't have a loose cap next time you fill up.
I just give mine a twist and at one click, a partial turn, it is secure.

Jim
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Old Oct 28, 2004 | 08:32 PM
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Originally Posted by OrangeVegaGT
When I press the gas tank fill door release I open the door and the gas cap is loose. I always tighten it to three clicks. Does releasing the door somehow turn the cap?

Define what you mean by the cap is loose. The cap should be snug with just 3 clicks. It will not tighten to the point that the cap doesn't turn any more. That's just not how click type caps work.
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Old Oct 28, 2004 | 08:43 PM
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Definitely should not become loose.
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Old Oct 28, 2004 | 08:49 PM
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Originally Posted by Larry_Yerton
My 03 coupe clicks when I tighten it but never comes loose when opening the lid.
Same with my 98
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Old Oct 28, 2004 | 08:55 PM
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Originally Posted by Corvette00Car
Three Clicks? Something isn't right I don't remember "clicking." It seems like turn a 1/4 turn and it locks. This isn't like "normal" gas caps where you turn and let it click like a torque wrench. I suspect you aren't turning it sufficiently and it is clicking making you think it is on. Look at it closely
Sorry bud, mine clicks. It is exactly one of those "normal" gas caps when you turn and it clicks like a torque wrench. It is the stock cap on my '97.

Paul
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Old Oct 28, 2004 | 09:16 PM
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I'm with DaBoz, sounds like a bad gas cap.
Hello Talon90
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Old Oct 28, 2004 | 09:19 PM
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My 03 stays tight....
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Old Oct 29, 2004 | 09:42 AM
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Thanks for all the posts. I rechecked the cap and it stays as is when I open the door. After I tighten it I am able to move it slightly left or tight without actually hearing a ticking noise that I do when I am removing it.

I'll take a ride over to the dealer and let them make sure it is going on correctly.
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