mine was the front recently as well, it's been over a week since I replaced it and no more "tighten gas cap", actually I just put the original one back on and the "standard brand" I had put in over the summer must have went bad already.
Got the dreaded P0455 code... again..,
- Thread starter Steve Waddington
- Start date
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I just replaced my front today. Fingers crossed.
latvius
Full Access Member
I've replaced everything at least once and I still get "tighten gas cap" at about 3/4 tank or less. I've replaced the front once, the back solenoid twice, the charcoal canister, the gas cap, put a smoke test on it....
Hope you all come up with something I can use that I have not heard of
Hope you all come up with something I can use that I have not heard of
possibly a cracked line or one of the parts you replaced is no goodI've replaced everything at least once and I still get "tighten gas cap" at about 3/4 tank or less. I've replaced the front once, the back solenoid twice, the charcoal canister, the gas cap, put a smoke test on it....
Hope you all come up with something I can use that I have not heard of
Well shit I just got P0446 tonight on the way home from work, which is vent control valve circuit malfunction. This is irritating. I replaced the vent valve not too long ago. I wonder if it's the canister or a cracked line. I did drop my tank and replace the fuel pump a few months ago and I pulled the canister when I did that but this problem just started showing up few weeks ago.
live2pull
Full Access Member
I have done this same thing on my 2004. I did not drop the tank however, I have not replace the canister (yet). I have heard that the tank pressure sensor could also trip this code. The PITA of this is you have to drop the tank again. I'm torn between dropping the tank for the sensor or biting the bullet on the charcoal canister.....
Tank pressure sensor? I replaced the entire fuel pump module with an AC Delco so there’s nothing left in the tank for me to replace. I haven’t got another code in over a week though so maybe that one was from replacing the front part, fingers crossed.
live2pull
Full Access Member
From what I've seen the pressure sensor is on the exterior near the lock collar. Quite possible the vent solenoid could solve the problem. Also, the pressure sensor could be on the 03-06 models only, but don't take my word as gospel.
Duplicate post. Stupid glitchy forum.
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It’s
GM Original Equipment; Includes Sender; Includes pressure sensor, Fuel Sender o-ring seal, internal strainer, fuel ... ACDelco GM Original Equipment Fuel Pump Modules consist of an electric fuel pump and a jet ...
If it’s on my 02 it’s included as part of the module. I see the plug for wiring on it and that looks like the plug on my fuel pump module. There’s nothing else on the top of or inside my tank to be replaced. Here’s a partial description of anotherAC Delco FPM from Rock Auto so it seems if there’s a pressure sensor, it’s included. I’ve replaced both vent solenoid and purge solenoid as well as gas cap.
GM Original Equipment; Includes Sender; Includes pressure sensor, Fuel Sender o-ring seal, internal strainer, fuel ... ACDelco GM Original Equipment Fuel Pump Modules consist of an electric fuel pump and a jet ...
