tahoe down !!! need info help fuel problem

[1lowhoe04]

ight my 03 tahoe is down the road and just shut off then reved back up and then died then shut down !

so i went a head and replaced the fuel filter it was black fuel came out and put the new one in and tryed to start it and turns over but sounds like it gets no fuel

ok so the fuel pump does not sound to be turning on ?????

but my dad says there there a last chance filter after the fuel filter ???


and another question is are all the fuel pumps the same as in camaro pumps and all

if its the fuel pump i am buying the WELBRO 255LPH fuel pump high performance pump cause the stock ones are 350 !!!

need help asap please guys thanks

---------- Post added at 09:39 PM ---------- Previous post was at 09:05 PM ----------

come on guys really need help

 

[la tahodida]

more that likely bro its ur fuel pump i now ive had the same thing happen to me like 4 times and i would go with the walbro its better than the autozone and advanced fuel pumps in my opinion ive tried them.

 

[1lowhoe04]

yea welbro is factory lol didnt know that till i looked under but i am going with the TREperformance 255LPH fuel pump for 70 bucks lol but didnt know if anyone else had advice on anything else

 

[Jay]

Most 5.3s in that model year are flex fuel and the fuel pump setup is different than the standard GM fuel pump of the past. And yes, changing your fuel filter every 30-50k miles is KEY to the life of the fuel pump... a clogged or mostly clogged filter will kill a fuel pump in short order because of the amps it has to pull to keep the rail pressure correct.

You can run the cheaper pumps but you will have to modify the bucket and lines. And if it's currently flex fuel and you plan to sell the truck later, you MUST tell the next owner that they can not run E85 in it. Nowadays the laws are changing in many states where you can be sued by the next owner for tampering with any emissions related equipment (which includes the fuel system) on a vehicle without disclosing the modifications first. What applies is, in this instance, you sell the "flex fuel" truck without a flex fuel pump in it, the next owner uses E85 and things mess up, you can be hit with a tort claim of some sort. Just giving you a heads up.

Finally, for a daily driver I wouldn't use anything but OEM pumps. Having owned a few dozen GM trucks in my business through the years, non-OEM pumps just do not hold up over the long term. All it takes is getting stranded one time with an aftermarket pump (resulting in large towing and/or mechanics/dealership bills when you can't fix it yourself) and you'll kick yourself over trying to save a hundred bucks. In my experience, the OEMs would usually last to around 150k miles (some going over 200k), while aftermarket pumps were considerably less.

 

[1lowhoe04]

well i am doing performance mods and yes i am daily driving it but come to find out it wasnt totally my fuel pump !

my alternator arked and ground it self out cought my wiring harness on fire and burned up about 10 wires now looking for wire harness for engine size and then hVE to splice in new wires

aint that some shit

so as of now
NEW FUEL FILTER
NEW PERFORMANCE FUEL PUMP
NEW WIRING HARNESS
NEW ALTERNATOR

 

[rich5368]

That sucks dude. Hope you get it back up soon.

 

[03TahoeZ71]

Bad fuel pumps in Chevy trucks are common. We used to have them go bad all the time at my work in our 1 ton cargo vans. I had 1 die in my Astro van once too.

Another thing that helps them live a bit longer. Never let your tank get below 1/4 tank. 1/2 tank would be better. The fuel acts as a coolant for the pump. Let it get below a 1/4 there's not a enough fuel to keep the pump from getting hot and going bad prematurely.

 

[1lowhoe04]

thansk yall for the help got a new harness and the trucks getting picked up monday to get taken to my buddys shop in houston to get fixed

 

[Jay]

Man, tough luck. I've only ever heard of a few frying harnesses but 145+ amps is enough to do it.

I would also test the fuel pump relay while you have it apart. If it sent enough amps through the system to fry the wire harness it can damage relays in the process.