Check Engine light P0455

OffroadJunkie84 · 10-25-2008, 09:00 PM

Alright, I have looked at the search for this and it does say it can be caused by the fuel cap. However I also checked this issue and replaced the cap because of the same issue, that and it was broken. The fuel cap light only comes on when I have around 3/4 of a tank or less. I am not sure if it is the line itself. Because it would seem funny to have another bad fuel cap after only a month of use.

Any suggestions? Or anyone have to replace the line? Sounds like a pain in the ass. Truck is stock no lift or anything.

jackedupcanyon · 10-25-2008, 09:14 PM

Would also think it was the gas cap. Maybe you bought a bad (new) gas cap that does not seal good. Might try another. Do you smell and gas around the truck? Under the truck?

http://www.obd-codes.com/p0455

ssgjurista · 10-25-2008, 11:28 PM

Odds are that the problem is elsewhere in the evap system.

OffroadJunkie84 · 10-27-2008, 09:13 AM

Well I did notice the green seal for the gascap isn't as... how to put this.... springy? I dunno but it seems flat like my other one had been. Except for the fact it locks where as my other one just spun around. I wonder if I could stretch the seal back to what it was originally. I thought that was the major problem with the old caps?

It's not like I keep screwing in the cap alot after it clicks, I just make sure it clicks then try to pull on it lightly to make sure that it is locked properly.

rangerbob · 10-27-2008, 10:51 AM

I've had a gas cap fail on me. Try replacing this first.

jackedupcanyon · 10-27-2008, 10:06 PM

ditto. gas cap first.

OffroadJunkie84 · 10-28-2008, 06:22 PM

I cleaned the seal on the gascap and then the filler hole. I just find it BS that I would have to replace a gascap that is only a month and a half old.

ssgjurista · 10-29-2008, 12:08 AM

Quote:

Originally Posted by OffroadJunkie84

I cleaned the seal on the gascap and then the filler hole. I just find it BS that I would have to replace a gascap that is only a month and a half old.

When you replaced the gas cap before, did you buy it or did the dealer replace it under the special coverage?

OffroadJunkie84 · 10-30-2008, 02:39 PM

I ended up buying it myself, I realized I was wordy in my email I sent them, because I originally said I had the 0455 code and the gas cap light come on and I did mention the cap was broken. I really didn't feel like fighting it but they were being dumb, the guy was giving me the run around about having to hook it up to their computer. I should have said "hey broken cap, you have to give me a new one" but I wasn't in the mood to argue, probably would have punched the guy... anyways....

I think cleaning the cap seal and the filler neck did the trick, no light came on. Wierd... it's not like it was really dirty just a little water and dirt. But I guess if it doesn't have a perfect seal it would do that, I don't see how it would be a large leak.

I'll keep you guys posted if it comes up again.

OffroadJunkie84 · 12-01-2008, 11:39 AM

I know I'm double posting but... Same problem check engine light following a gas cap indicator. Now... it had been a heavy snow last week and one day I start my truck low and behold the light is gone, was like that for a day or so then it came back. Not sure what this could be a possible leaky hose or bad connection?

10-25-2008, 09:00 PM	#1 (permalink)
OffroadJunkie84 Senior Member Join Date: Feb 2008 Location: Batavia, New York Posts: 620	Check Engine light P0455 Alright, I have looked at the search for this and it does say it can be caused by the fuel cap. However I also checked this issue and replaced the cap because of the same issue, that and it was broken. The fuel cap light only comes on when I have around 3/4 of a tank or less. I am not sure if it is the line itself. Because it would seem funny to have another bad fuel cap after only a month of use. Any suggestions? Or anyone have to replace the line? Sounds like a pain in the ass. Truck is stock no lift or anything. __________________ 2004 Chevrolet Colorado Crew Cab, Green, Z71 4x4 with 3.73 (GT4) G80. Firestone Destination 31x10.5 15 Mods: Spectre Air Filter, Optima Yellow Top 34-78, Imperial Tranny Cooler, Pioneer 7700MP HU, Pioneer Component Speakers with Sony Amp.

10-25-2008, 09:14 PM	#2 (permalink)
jackedupcanyon Senior Member Join Date: Oct 2008 Location: North Atlanta, GA Posts: 1,048	Re: Check Engine light P0455 Would also think it was the gas cap. Maybe you bought a bad (new) gas cap that does not seal good. Might try another. Do you smell and gas around the truck? Under the truck? http://www.obd-codes.com/p0455 __________________ Steve 2007 GMC Canyon Z71-4x4 Crew Cab \| 3.7 I5 - Auto \| 4" Skyjacker suspension lift \| 3" Performance Accessories body lift \| 33x11.5x17 tires (going 35x12.5x17) \| 3.73 gears \| Custom blurred grille \| 57 K&N \| BPi VS \| AMS EaAU 6081 \| SSK MAF Adapter \| NGK AFX w/ NTK WBO2 \| HP Tuner Pro wideband tuned by ME! \| AMSoil fluids FTW! ............2010 SESM Oct 22-24 Details Here

10-25-2008, 11:28 PM	#3 (permalink)
ssgjurista Senior Member Join Date: Oct 2006 Location: Fort Carson, CO Posts: 6,410	Re: Check Engine light P0455 Odds are that the problem is elsewhere in the evap system. __________________ 2005 Z71 LS Crew Cab 4X4 L52, 4L60E, GT4, Silver Birch Metallic MAXX Shackles: http://www.355nation.net/forum/suspe...here-here.html MAXX Cam JR Lift Kit for 4X4 & 2WD Z71: http://www.355nation.net/forum/suspe...ering-kit.html MAXX Stak Lift Kit for 2WD: http://www.355nation.net/forum/suspe...t-numbers.html PerforMAXX Body Lift: http://www.355nation.net/forum/suspe...y-spacers.html

10-27-2008, 09:13 AM	#4 (permalink)
OffroadJunkie84 Senior Member Join Date: Feb 2008 Location: Batavia, New York Posts: 620	Re: Check Engine light P0455 Well I did notice the green seal for the gascap isn't as... how to put this.... springy? I dunno but it seems flat like my other one had been. Except for the fact it locks where as my other one just spun around. I wonder if I could stretch the seal back to what it was originally. I thought that was the major problem with the old caps? It's not like I keep screwing in the cap alot after it clicks, I just make sure it clicks then try to pull on it lightly to make sure that it is locked properly. __________________ 2004 Chevrolet Colorado Crew Cab, Green, Z71 4x4 with 3.73 (GT4) G80. Firestone Destination 31x10.5 15 Mods: Spectre Air Filter, Optima Yellow Top 34-78, Imperial Tranny Cooler, Pioneer 7700MP HU, Pioneer Component Speakers with Sony Amp.

10-27-2008, 10:51 AM	#5 (permalink)
rangerbob Senior Member Join Date: Sep 2004 Location: Germantown, Maryland Posts: 9,570	Re: Check Engine light P0455 I've had a gas cap fail on me. Try replacing this first. __________________ 05 Canyon EC SLE - I5M Z71 GT4 V1 \| FRAM Boost+RamAir \| LED + HAW Strobes \| BFG 33-12.5-15 Rancho \| Bubaloo Skidz \| MBRP Dumped System Cat Gut\| 3 x Lightforce Blitz \| eFan \| PCMforless <- very unhappy 1.5" TB/AAL/1" BL \| Fold-A-Cover \| Line-X OTR \| Brake Box

10-27-2008, 10:06 PM	#6 (permalink)
jackedupcanyon Senior Member Join Date: Oct 2008 Location: North Atlanta, GA Posts: 1,048	Re: Check Engine light P0455 ditto. gas cap first. __________________ Steve 2007 GMC Canyon Z71-4x4 Crew Cab \| 3.7 I5 - Auto \| 4" Skyjacker suspension lift \| 3" Performance Accessories body lift \| 33x11.5x17 tires (going 35x12.5x17) \| 3.73 gears \| Custom blurred grille \| 57 K&N \| BPi VS \| AMS EaAU 6081 \| SSK MAF Adapter \| NGK AFX w/ NTK WBO2 \| HP Tuner Pro wideband tuned by ME! \| AMSoil fluids FTW! ............2010 SESM Oct 22-24 Details Here

10-28-2008, 06:22 PM	#7 (permalink)
OffroadJunkie84 Senior Member Join Date: Feb 2008 Location: Batavia, New York Posts: 620	Re: Check Engine light P0455 I cleaned the seal on the gascap and then the filler hole. I just find it BS that I would have to replace a gascap that is only a month and a half old. __________________ 2004 Chevrolet Colorado Crew Cab, Green, Z71 4x4 with 3.73 (GT4) G80. Firestone Destination 31x10.5 15 Mods: Spectre Air Filter, Optima Yellow Top 34-78, Imperial Tranny Cooler, Pioneer 7700MP HU, Pioneer Component Speakers with Sony Amp.

10-30-2008, 02:39 PM	#9 (permalink)
OffroadJunkie84 Senior Member Join Date: Feb 2008 Location: Batavia, New York Posts: 620	Re: Check Engine light P0455 I ended up buying it myself, I realized I was wordy in my email I sent them, because I originally said I had the 0455 code and the gas cap light come on and I did mention the cap was broken. I really didn't feel like fighting it but they were being dumb, the guy was giving me the run around about having to hook it up to their computer. I should have said "hey broken cap, you have to give me a new one" but I wasn't in the mood to argue, probably would have punched the guy... anyways.... I think cleaning the cap seal and the filler neck did the trick, no light came on. Wierd... it's not like it was really dirty just a little water and dirt. But I guess if it doesn't have a perfect seal it would do that, I don't see how it would be a large leak. I'll keep you guys posted if it comes up again. __________________ 2004 Chevrolet Colorado Crew Cab, Green, Z71 4x4 with 3.73 (GT4) G80. Firestone Destination 31x10.5 15 Mods: Spectre Air Filter, Optima Yellow Top 34-78, Imperial Tranny Cooler, Pioneer 7700MP HU, Pioneer Component Speakers with Sony Amp.

12-01-2008, 11:39 AM	#10 (permalink)
OffroadJunkie84 Senior Member Join Date: Feb 2008 Location: Batavia, New York Posts: 620	Re: Check Engine light P0455 I know I'm double posting but... Same problem check engine light following a gas cap indicator. Now... it had been a heavy snow last week and one day I start my truck low and behold the light is gone, was like that for a day or so then it came back. Not sure what this could be a possible leaky hose or bad connection? __________________ 2004 Chevrolet Colorado Crew Cab, Green, Z71 4x4 with 3.73 (GT4) G80. Firestone Destination 31x10.5 15 Mods: Spectre Air Filter, Optima Yellow Top 34-78, Imperial Tranny Cooler, Pioneer 7700MP HU, Pioneer Component Speakers with Sony Amp.

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