"check Gas cap" - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 02-17-2005, 09:57 AM   #1
Junior Member
Thread Starter
 
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
Custom88 is on a distinguished road
Default "check Gas cap"

Ok, the message "check gas cap" has been coming on my mom'* SSEi for over a month now. We took it to the dealer and they lookd at it. They charged us $80 just to look at it and say the gas cap was 'bad.' they replaced it and put on some new seal and say the car is good to go... drive it for a day and the ligth is back ok. The car has been to the dealer 4 times for this already and they can't figure out what'* wrong, thus the reason why I ask here. any other ideas on what could be wrong with her car? The gas cap has been replaced 3 different times with 3 different brands. (one GM, one from autozone, and one from advance auto.) thanks!
Custom88 is offline   Reply With Quote
Old 02-17-2005, 10:03 AM   #2
Senior Member
True Car Nut
 
Join Date: Jan 2004
Location: Chicago,IL MWBF '04 SURVIVOR MWBF '05 SURVIVOR Napa Manager
Posts: 3,955
Thanks: 0
Thanked 0 Times in 0 Posts
Kennginn is on a distinguished road
Default

looks like its time to go to NAPA
Kennginn is offline   Reply With Quote
Old 02-17-2005, 10:56 AM   #3
Junior Member
Thread Starter
 
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
Custom88 is on a distinguished road
Default

Quote:
Originally Posted by Kennginn
looks like its time to go to NAPA
well, I don' tthink that'* going to help. The gas cap can't be the problem. When they scan the code it'* something along the lines of "fuel system pressurization loss" or something like that. Basically the fuel tank is leaking pressure and it'* tripping the SES light.
Custom88 is offline   Reply With Quote
Old 02-17-2005, 10:57 AM   #4
Sol
Senior Member
True Car Nut
 
Join Date: Sep 2002
Posts: 8,909
Thanks: 0
Thanked 0 Times in 0 Posts
Sol is on a distinguished road
Default

Aren't you supposed to turn the cap a certain amount of times to get a good seal?
Sol is offline   Reply With Quote
Old 02-17-2005, 11:01 AM   #5
Junior Member
Thread Starter
 
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
Custom88 is on a distinguished road
Default

Quote:
Originally Posted by Sol
Aren't you supposed to turn the cap a certain amount of times to get a good seal?
yep. 3 times. You can turn it 20 times if you want and it still has the same problem.
Custom88 is offline   Reply With Quote
Old 02-17-2005, 05:47 PM   #6
Senior Member
True Car Nut
 
Join Date: Oct 2002
Location: Groton, CT _NEBF 05, 06, 07_
Posts: 2,703
Thanks: 0
Thanked 0 Times in 0 Posts
markwb is on a distinguished road
Default

Actually it is a possible vacum lreak in the EVAP system. Either a purge valve or vent valve malfunction or any of the interconnecting lines between the fuel tank, charcoal canister & intake manifold in the EVAP system. Just throwing out ideas.
markwb is offline   Reply With Quote
Old 02-17-2005, 09:34 PM   #7
Member
Posts like a V-Tak
 
Join Date: Nov 2004
Location: Spokane, WA
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
garlandchaos is on a distinguished road
Default

Fuel Tank Pressure Sensor?
garlandchaos is offline   Reply With Quote
Old 02-18-2005, 06:40 AM   #8
Senior Member
True Car Nut
 
Join Date: Oct 2002
Location: Groton, CT _NEBF 05, 06, 07_
Posts: 2,703
Thanks: 0
Thanked 0 Times in 0 Posts
markwb is on a distinguished road
Default

Quote:
Originally Posted by garlandchaos
Fuel Tank Pressure Sensor?
Yes, another potential problem.
markwb is offline   Reply With Quote
Old 02-18-2005, 11:13 AM   #9
Senior Member
Posts like a 4 Banger
 
Join Date: Aug 2004
Posts: 104
Thanks: 0
Thanked 1 Time in 1 Post
HowY is on a distinguished road
Default Im in the same boat...

Cant remember the specific code 4014 i think....

An OmniScan tool really gave a HUGE amount of data for the
diagnostic of EVAP or "gas cap" it being the LAST on the list...
and the list is long Just SOME from memory...

Fuel cell pressure sensor (a likely culprit)
Fuel pressure regulator
Fuel pump relay
evap return vent
egr return
egr selonoid
egr vac
and several more little vacc hoses.
Fuel cell filler neck / neck vent
cas cap

I'm told the filler neck DOES crack and not hold pressure
and the scan tool monitored the "pressure sensor" and the
values were all over the place -2200 - 5600 -3600 etc.
so I'm thinking either the filler neck or the sensor on my '00
annoyin' as all get out!
HowY is offline   Reply With Quote
Old 02-25-2005, 01:08 AM   #10
Senior Member
Posts like a Northstar
 
Join Date: Dec 2002
Location: Bellbrook, Ohio
Posts: 547
Thanks: 0
Thanked 0 Times in 0 Posts
compyelc4 is on a distinguished road
Default

Been there; done all of that. Let'* look at what happened to me.

I had a similar problem with my new 2001 Bonne after every fill up. The "check gas cap" light would go out after 10-20 miles or so, and return again after the next fill up. Mechanics tore their hair out, checking codes, testing cap, replacing cap, etc. Finally, one dude suggested that at fill-up I DO NOT OVERFILL BY ONE DROP once the auto fuel fill nozzel "cuts off". I thought the guy was crazy. Well, now I pull the nozzle out and cap 'er back up WITHOUT TRYING TO GET MORE FUEL INTO HER. I've never looked back.

Good luck.
compyelc4 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
"Gas Cap Loose Check Cap" - 2001 Buick Lesabre eb-86 Buick 9 04-08-2015 01:31 PM
01 Bonneville P1401, "Check Gas Cap", Hesitation orbitz 2000-2005 0 09-08-2009 03:19 AM
Gas Cap. Don't Let others steal your gas 03SSEISUPERCHARGED General GM Chat 26 05-04-2008 09:36 PM
"Check Gas Cap" warning Paul 2000-2005 11 10-05-2005 09:27 PM
"check gas cap" Custom88 2000-2005 14 01-24-2004 03:17 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 08:46 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.