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  1. I have a 2000 Silverado 2500 6.0 that is having some hesitation/cutting out on acceleration. It’s weird it seems like if you ease into the throttle it doesn’t cut out but if you mash on the gas it acts like it wants to die. It does it in park and in drive. First noticed it when I was pulling my boat out of the lake and I could barely make it up the boat ramp, it was spitting in sputtering until it eventually seems like it cleared up and started going normal. I replaced the spark plugs, spark plug wires, fuel pump, fuel filter, ran seafoam through the gas, and change the air filter but it seems
  2. Hey Everyone so yesterday after filling up my tank on my 07 Silverado 1500 Classic V6 to almost full I noticed gas leaking from under my truck pretty badly on the right side of the gas tank. Only happens when the truck is on. I recently have replaced the gas lines that go to the engine. Since there was a leak there prior and it stopped leaking gas for about 3 months. For a couple weeks now my truck has smelled like gas when you walk around it and also noticed it felt like the truck was struggling to start everytime i get in it but there was no Check Engine light and were no leaks until now wh
  3. My 99 Yukon with Vortec 5.7L suddenly won't run. It cranks over fine, starts in about 1 second (normal), but then dies 2-3 seconds later. Giving it a little bit of throttle while starting doesn't make any difference. I was out of town when it happened, so I had to have it towed to the nearest shop. I suspect the fuel pump, but my search of the forum didn't turn up any other posts with this problem. Is this common? If not the fuel pump, any ideas what could be causing this start, but quickly dying, problem to suddenly appear? I also considered the fuel filter, but it seems unlikel
  4. I have a 2020 gmc sierra sle 5.3, I bought it may 13th. Starting at about 800 miles check engine light would flash for a minute or two and then go off, this occured every 300 miles until I got in one day around 1500 or 1600. Check engine light stayed on. Called the dealership and took it in was throwing misfire codes, the diagnosed it as fuel pump module reset the codes and ordered the part and sent me on my way. Come back in and had it replaced when the part arrived, well now fast forward to a tank and a half later and now the check engine light is on for the evap system/gas cap, and fuel pre
  5. 2005 Chevrolet Silverado 4x4 Z71 5.3 Gasoline Looking for some help, I’ve talked to a few different shops about the problem I’m having. Basically my fuel gauge isn’t working it always reads empty, and before it was completely shot, it would read normally and shut off, only to come back on a few minutes later. One day it shut off, and never came back on, so I assumed it was the fuel sending unit, so I replaced the fuel pump with a Delphi, I had the same issue so I returned it for an ACDelco because I’ve had experiences with the Delphi pumps being defective, but after I re
  6. What is the average repair cost for a fuel pump sending unit and float. On a 1998 Suburban 2500. Parts and labor included??
  7. So i have a 2000 chevy silverado 1500 4x4 with the 5.3L V8. I have replaced the seals on the injectors, new fuel pump, new fuel filter and new spark plugs and wires. The issue i am facing that i cannot figure out is why im still losing pressure in the fuel. It is no problem when it is cold it fires right up. But when its warm and i leave it shut off for more than five minutes, it takes three or four cycles of the key to start. I know im losing pressure but i do not know where or how. there is no fuel leaks anywhere that i can see. and with replacing everything i am stumped and need some h
  8. I have the following items for sale individually or as a whole. They are brand new, never used, in the box. I had purchased to replace the Fuel Pump system on my 2007 Sierra (new model), but ending up trading in the truck instead. Here are the parts, part #s and asking price: 1 – GM Fuel Pump Retainer Lock Ring (GM# 10325852/ACD# TR26) $5.00 1 – GM Sensor Kit (GM# 19168426/ACD# SK1294) $50.00 1 – Fuel Pump with seal – (GM#19206532/ACD# M10206) $200 I will sell all 3 together for $230 and that includes shipping. I will also sell the Sensor Kit and Fuel Pump s
  9. Have 2001 Sierra Z71 1500 with 5.3; having problems starting, I crank at few revolutions then turn ignition off then back on. Once I've heard pump stop It starts right up. Not sure where to begin.
  10. I have noticed when I open the drivers door I here a sound like the fuel pump starting up for several seconds then shuts off. Is this normal? What is the reason for doing this?
  11. If anyone knows of a previous thread that explains similar symptoms please let me know, I haven't been able to find any. I have been getting a CEL for p0171(lean bank one), p0405 (egr), p0449 (evap vent seloniod), and occasionally p0174 (lean bank two), and p0430 (cat system efficiency below threshold). It makes sense that all of these codes could come together so let me explain a little bit of what's going on. I bought the truck last fall with about 200k miles, and unfortunately had to have the trans rebuilt so I am trying to avoid throwing parts at it and hoping it fixes the iss
  12. First off let me start with how much I love this reliable old truck. We WERE at 4 years and 40,000 miles trouble free. Driving this morning at highway speeds. Felt a buck, wasn’t sure if it was transmission related or what. Then a mile later it starts bucking repeatedly. Followed by a loss of power, very slowly slowed down to 2-3 mph where it finally shut off. As it did this the low battery light flashed and the dash lights when dim. I shut the ignition off, waited a couple minutes and started it again. It cranked without hesitation and fired ran for a couple seconds, I tried giving some throt
  13. 2002 chevy silverado 2500hd 6.0 truck randomly dies no rough idle, no lights, no error codes. Truck won't start up right after it dies but if I let it sit it will start up fine anyone else have similar issues or have any ideas and what it could be?
  14. HELP yesterday I parked my 12/1999 chevy1500 z71 on slight hill when I tried to start it, it kept coughing &dying when I rolled it to level ground it finally started Later that night same conditions while ideling for 10 minutes it died & wouldn't restart till on level ground is it bad fuel, bad fuel pump, or some type of sabatage?
  15. Recently my 2007 silverado 1500 with a 5.3L engine stalled. Engine would not start again. Thought it was the fuel pump so I replaced it and same problem, would not start. Replaced the fuel control module next and truck now starts and runs fine. I am however now getting a P2635 code after start up. Try to reset the code but just comes back again. Tested my fuel pressure with a gauge and reads 59 psi at idle and up to 75 psi during start. Had to have the new fuel control module programmed to work in my truck. Not sure what is wrong. Is it possible for the new fuel control module to take a little
  16. Please help. I have an 02 Suburban with a fuel pump issue. The fuel pump went out. I had my neighbor kid swap it out. When he replaced it, he broke the nipple on the vapor canister, (not sure if that’s relevant). He reinstalled the tank and we went to start it up and.... nothing. The gas gauge wouldn't read and there was no fuel going to the fuel rail. We dropped the tank again and I noticed that he installed and adapter on the wiring harness. I disconnected the adapter and plugged it in directly. The gas gauge kicked on, the truck started up, then sputtered out. I checked fuel pressure with t
  17. 2003 Chevy Silverado 1500 4.8L This is my first post on any kind of forum but I am desperate for answers because I am unable to find info anywhere else online. Today I had my instrument cluster fixed by a guy who says he has done several. The gear indicator, oil pressure gauge, and the backlighting were not working properly. When I went to pick up my truck today he explained to me that everything was working except the fuel gauge. The gauge has worked with no problem until today. He claims that the fuel gauge is not getting a good connection because it has a bad lead, which I've never heard
  18. Having some drivability issues, then got a CEL which showed a code #44 O2 lean. Fuel Pressure showed 10psi. Pinching return line didn't yield any increase in pressure. Diagnosing a dying pump I decided to upgrade to an EP381 to cover any future mods. I may have around 250rwhp now (see sig), would like around 350hp when I have more time to play. Can you outline, or provide the thread covering adjusting/modifying the OE pressure reg (for the EP381)? I will be installing my Holley TBI later - I understand that has an adjustable press reg which should be straightforward to adjust? I pr
  19. This is my first post and I'm new here. I have a '07 ext cab Silverado, 4.8, 96,000 miles, non-flex fuel, LT, 2WD, 3.23 rear, in Tennessee. The problem started one day when I left a traffic light. I took off and when it reached around 10 mph, it dumped out and then picked back up as if it was out of gas, which I thought it was. It was very low on fuel. I stopped and got some gas but the problem persisted and got worse. I thought I had let the fuel level get low enough to pick up some trash from the bottom of the tank. I've done this before and it clogged up the fuel filter. But, alas, there
  20. Is a very known topic that the Vortec spider injection system is prone to leak inside the intake and has problematic poppet valves I found exactly that being the problem of all my misfire codes and rough running issues replaced the spider injection with new current updated part which gives actual fuel injectors at the bottom of each tube my system now stores and holds pressure without hardly any leak down.. Now the real question I read everywhere that fuel pressure on vortex should be 6265 psi at Prime and full running condition or else vehicle will not start this is false! My vehicle now run
  21. Of course my first post would be a trouble shooting question right. So ive got a 97 5.7 vortec, new starter, alternator, fuel pump and filter. a while back i started having issues getting my truck to start if the engine was warm and i had turned it off. usually quick trips to the store were ok but as soon as my engine gets to temperature it wont start. ideas of where to start looking.
  22. Hi guys, I LOVE suburbans, this is my 5th, but I have a problem that is stumping me. 1999 GMC Suburban 1500 4x4, Vortex 350, 248000.Automatic ( engine rebuilt 87000 miles ago) LOCATION: top of a mountain in Colorado, no garage or cement to work on, drive 14 miles a day on rough road base. PROBLEM: Installed AirTech ( yeah I know) 2 yrs. ago. ran well until 6 wks. ago. Died. replaced with Delphi, drove 2 weeks,DIED. Installed another, 2 weeks, DIED, Installed another, DIED after about 2 weeks, Installed ANOTHER, yep died. Getting ready to install another. ( yes I did cut a hole in my back de
  23. I replaced the fuel pump in the tank of my 07 Yukon xl yesterday due to a check valve that wouldn't retain fuel pressure after being parked for a few hours. The truck usually took two tries to start. Now that I have that problem seemingly taken care of, I have two warning lights coming on. It fluctuates between stabiltrac and traction control and then both will go out. It causes a hard shift between 1st and 2nd when the light is on. But then the light will go out and everything is back to normal. Happens with the car idling in park and while driving. I have read that somehow the throttle body
  24. Hi, I have a 2005 Yukon XL 5.3 liter. I replaced the fuel pump two months ago due to a pressure issue (having to start twice to get it to start). Everything went fine with the installation and for the last two months all worked fine. My Wife filled her tank up 3 days ago and the gas gauge went well beyond full (See Pic). The computer range works fine. After a couple of days it looks like the gauge goes down but when its empty it shows half a tank (see picture). Anyone have any idea what the problem is. I disconnected the battery hoping it might reset but that didn't work. I don't think its
  25. Hello, I have a 2008 Sierra SLE with a 5.3 engine. When I turn the truck off the fuel pump continues to run. I swapped the A/C compressor relay with the Fuel Pump relay in the fuse block but that did nothing. I tried pulling the Fuel Pump fuse and it still kept running. The only way I can get it to shut off is by pulling the Fuel System Control Module fuse. Any ideas? Thanks, Dale
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