sunksy
New member
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- Nov 19, 2023
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2018 Chevrolet Silverado LTZ 4x4 5.3L. 135,000 miles.
To begin with.....my truck had the usual symptoms of a failing fuel pump. No buzzing noise when turning the key on, low fuel pressure,
poor overall performance. And difficult to start (at times) but usually gets going after several attempts.
What was done.....I purchased a fuel pump, model 13513407, which was replacement model given from several online Chevrolet Parts
websites. Now where I live at, due to HOA, I cannot work on my stuff at home. Garage is full of junk and can't access the backyard due
to fencing. Even if i could, since its fuel someone would smell something and report me in, I already have a strike with the HOA. So I
found a local mobile mechanic to do the work for me. I researched and found one with a good reputation. The work was performed,
money exchanged, the truck started up quickly, no leak issues that could be seen. Everything seemed to be working fine.
Now the symptoms....truck runs like sh*t. There is this random vibration that can be felt up front in the engine compartment, this happens
whether accelerating or idling, fast or slow. And the engine light comes on constantly. The code is P0455 Evaporative Emission System Leak
Detected (large leak). I took this for diagnostic to seven different shops, including a dealer, and out of the seven, four "master mechanics" have
stated it is a transmission issue. WTF?
Ok so a little more information. About a week after the install, I took it for a ride and filled up the tank. Just kept the hose in until it clicked.
When driving home I smelled a STRONG odor of gas. I pulled over as soon as I could, crawled under the truck, nothing. Couldn't smell anything
while parked. And I know it was me because for a portion there I was the only person on the road. More information, one time it rained here,
not just a drizzle but coming down and it did that for most of the day, I'm in Texas DFW by the way. During the drive to work my truck went crazy,
vibrations like I never felt before and my check engine light was flashing like christmas lights. I found out this usually points to multiple cylinder
misfires. It has done this a second time during another rainy day. Sometimes during acceleration, the vibrations in the engine bay intensifies but
eventually dies out. Mind you this is not a transmission slippage, I know what that feels like. I don't think those master mechanics were correct
in this. So knowing the plugs, coils, and wires have never been replaced I bought a complete ACDelco set (coil pn 12708496, wire set pn
19431551, and plugs pn 41-114). Ok I remember the plugs were replaced at 80,000 while it was still under the service agreement. Even when I did
this, and during another drizzle, it did the same engine light flashing thing and strong jerking/vibrations as stated before. I took the truck to another
service center and his diagnostic was the P0455 code was because of the canister purge valve (a 40 dollar item) and the all my spark plugs were
faulty (about 100 dollars). I had some hope in the canister purge valve but not the plugs, since there are still less than 100 miles on them. I bought
and replaced the valve myself (fyi the shop wanted a thousand just to replace plugs and install the valve, parts would have added more) but I'm still
presented with this scenario. I'm pretty sure if it rains the process described earlier will repeat again. Oh more info, during the last service center
visit i had them test the fuel pressure that the new pump was giving and it passed with flying colors.
So I'm at a lost. Just to point out I had absolutely no issues with this truck before the fuel pump change, the truck took me here to Texas from Arizona
at least 12 times before finally moving here, no problems at all. And I am the original owner, if that makes any difference. Oh yes there were
issues like the radiator shutter assembly failing, a hole in the coolant reservoir, cracked windshield, but nothing big. The truck has been serviced per the
service plan, before it ran out. At this moment I'm looking for another shop or individual that can drop the tank and have a look see. Maybe the leak is
there? And if there is a leak why no spillage? I know gas dries quickly but there'd still be signs. And if so can this scenario cause the engine to act up
in the manner described? I think I will have to find some mom and pop place because the other mechanic shops I have visited weren't willing to drop the
tank just to "see", unless I was to buy a pump from them. I work long hours all week but will check up on this when time permits, any advice or directions
some of you can provide will be helpful. Thanks.
To begin with.....my truck had the usual symptoms of a failing fuel pump. No buzzing noise when turning the key on, low fuel pressure,
poor overall performance. And difficult to start (at times) but usually gets going after several attempts.
What was done.....I purchased a fuel pump, model 13513407, which was replacement model given from several online Chevrolet Parts
websites. Now where I live at, due to HOA, I cannot work on my stuff at home. Garage is full of junk and can't access the backyard due
to fencing. Even if i could, since its fuel someone would smell something and report me in, I already have a strike with the HOA. So I
found a local mobile mechanic to do the work for me. I researched and found one with a good reputation. The work was performed,
money exchanged, the truck started up quickly, no leak issues that could be seen. Everything seemed to be working fine.
Now the symptoms....truck runs like sh*t. There is this random vibration that can be felt up front in the engine compartment, this happens
whether accelerating or idling, fast or slow. And the engine light comes on constantly. The code is P0455 Evaporative Emission System Leak
Detected (large leak). I took this for diagnostic to seven different shops, including a dealer, and out of the seven, four "master mechanics" have
stated it is a transmission issue. WTF?
Ok so a little more information. About a week after the install, I took it for a ride and filled up the tank. Just kept the hose in until it clicked.
When driving home I smelled a STRONG odor of gas. I pulled over as soon as I could, crawled under the truck, nothing. Couldn't smell anything
while parked. And I know it was me because for a portion there I was the only person on the road. More information, one time it rained here,
not just a drizzle but coming down and it did that for most of the day, I'm in Texas DFW by the way. During the drive to work my truck went crazy,
vibrations like I never felt before and my check engine light was flashing like christmas lights. I found out this usually points to multiple cylinder
misfires. It has done this a second time during another rainy day. Sometimes during acceleration, the vibrations in the engine bay intensifies but
eventually dies out. Mind you this is not a transmission slippage, I know what that feels like. I don't think those master mechanics were correct
in this. So knowing the plugs, coils, and wires have never been replaced I bought a complete ACDelco set (coil pn 12708496, wire set pn
19431551, and plugs pn 41-114). Ok I remember the plugs were replaced at 80,000 while it was still under the service agreement. Even when I did
this, and during another drizzle, it did the same engine light flashing thing and strong jerking/vibrations as stated before. I took the truck to another
service center and his diagnostic was the P0455 code was because of the canister purge valve (a 40 dollar item) and the all my spark plugs were
faulty (about 100 dollars). I had some hope in the canister purge valve but not the plugs, since there are still less than 100 miles on them. I bought
and replaced the valve myself (fyi the shop wanted a thousand just to replace plugs and install the valve, parts would have added more) but I'm still
presented with this scenario. I'm pretty sure if it rains the process described earlier will repeat again. Oh more info, during the last service center
visit i had them test the fuel pressure that the new pump was giving and it passed with flying colors.
So I'm at a lost. Just to point out I had absolutely no issues with this truck before the fuel pump change, the truck took me here to Texas from Arizona
at least 12 times before finally moving here, no problems at all. And I am the original owner, if that makes any difference. Oh yes there were
issues like the radiator shutter assembly failing, a hole in the coolant reservoir, cracked windshield, but nothing big. The truck has been serviced per the
service plan, before it ran out. At this moment I'm looking for another shop or individual that can drop the tank and have a look see. Maybe the leak is
there? And if there is a leak why no spillage? I know gas dries quickly but there'd still be signs. And if so can this scenario cause the engine to act up
in the manner described? I think I will have to find some mom and pop place because the other mechanic shops I have visited weren't willing to drop the
tank just to "see", unless I was to buy a pump from them. I work long hours all week but will check up on this when time permits, any advice or directions
some of you can provide will be helpful. Thanks.
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