ACDelco GM Original Equipment MU1613 (19153711) Fuel Pump and Level Sensor Module with Seal, Float, and Harness

Good price and worked perfectly

This is the second one of these ACDelco pumps I've replaced in the last 4 years. The sending units fail. The original lasted 15 years and 130,000 miles. The replacement lasted 4 years and 30,000 miles. This pump doesn't look like the Delco pump I took out although it's supposed to be the same. No external filter, 2 support rods instead of 3, plastic bearing instead of brass for float rod and no ACDelco label pressed into the top plastic. It says Singapore on the top of the pump although the box says Made in Mexico. Is this just a $39.00 pump in a GM box? We will see. The truck runs fine and the fuel gauge reads correctly.

Works Perfect on my 2002 Silverado with a V8 5.3 L - If you buy something cheaper for like 50 bucks it’s most likely made for a Chevy V6 - it will fit but not perfect -- then the gas gauge is off 1/8 a tank - and the pump itself is not as big I got the 50 dollar pump, and you can see the difference in size. - hence - it will run but only for a short time. But this here AC DELCO pump works perfect for a Chevy V8 5.3 - take my word for it and save the hassle of doing it not once.. but twice. With this pump it’s One and done..

Works like it should, my truck wouldn’t start as fast as it use to. I had to turn the ignition switch on for a couple of seconds then turn to start it up. Replaced the pump, now it starts right up!

I checked all of the parts stores and the GM dealer looking for this exact pump when mine went out. They all wanted between $276 and $330 for this exact pump. When I installed this, it was an exact fit for my 2001 Chevy Silverado 1500. The only thing I had to change was the plug on the truck that runs the pump itself, but this pump comes with the replacement, so it was a simple matter of clipping and stripping 4 wires, then wiring on the new plug and plugging it in. I suggest getting the new locking collar and a set of the plastic clips that go on the fuel lines. It's only been a few weeks but so far everything seems ok. The only reason that I knocked a star is because this pump has whined since I installed it. I don't know if that is just the way this pump is, or if it's something more serious, but time will tell.

Does not deliver enough volume of fluid to generate correct fuel pressure. I spent a few weeks trying to trace down a pair of trouble codes (lean codes, p0171 & p0174) which are notorious codes for a vaccum leak. I soon learned that the lean condition, where a vehicle is receiving too much air with respect to the fuel being delivered, are most commonly due to a vacuum leak --- and --- this one is important --- fuel starvation. I thought surely its not the new fuel pump I installed but I decided to check the fuel pump anyway. I checked the voltage coming to the pump and it was good. I checked fuel pressure and with the key on engine running it reads 48 psi. The spec for this truck (2000 GMC sierra 5.3) is around 55-62 psi with key on engine running. I disconnected the fuel pressure regulator vacuum hose, no fuel squirted out (indicating its good), and the pressure barely jumped up (indicating possible fuel starvation). When I replaced the fuel pump I also replaced the fuel filter (Twice) hoping that was the issue. I checked my short term fuel trim and long term fuel trims (STFT & LTFT). Vacuum leaks will usually generate high STFT at low RPM and if you press on the accelerator (higher RPMs) the STFT will go to zero indicating vacuum leak because vacuum leak becomes negligible to the amount of air entering the engine at high RPM. I have high STFT and high LTFT both at idle and higher RPM which suggest there is no vacuum leak (or a very huge one). I smoked tested my truck to check for vacuum leaks and there were none. All signs point to a fuel delivery problem and the fuel pressure test points to the fuel pump its self.I should note that the truck is driveable but the check engine light stays on and it is getting exceptional poor gas mileage. I bought the replacement pump because the "check valve" in mine went out.While I am glad to have pinpointed the root cause of my lean codes, I am disappointed to learn that this item can no longer be returned (45 days from when purchased -- approx 25 days since installation/me tracking down the issue). Not that I could even begin to explain how to return something I am currently using in order to replace it with one that works correctly in my daily driver truck. That being said, I wanted to post this as a warning to other buyers considering purchasing this type of product online. You need to check voltage to the pump and fuel pressure as a minimum immediately after installation since you do not have much time to return it. I would have done this myself when purchased but I did not have access to those tools/was trusting my purchase from amazon. Another side issue I would like to include in this rant is that I have also looked up parts and have had amazon say "this does not fit your vehicle." The vehicle compatibility search needs work because I have often had this happen only to cross reference with other parts suppliers and forums only to determine amazon is wrong. All of the above issues regarding buying automotive parts on amazon/returning them do not bestow much confidence in any future purchases. However, I'm sure the lust of such affordable prices will bring me back again. But I will definitely not be buying another fuel pump on here(Update** I lied. I bought a different brand referenced below. Prices and free shipping with prime are too tempting.... But definitely tested it after installing it this time.). Basically I will ask myself on future purchases, where is this part going on my vehicle? Is it easy to uninstall in the event of a return? can I return the item and still drive my vehicle (daily driver scenario)?I am currently trying to find the manufacturer warranty information for this part but I threw away everything from the purchase and I haven't been able to find anything about this item from Acdelco yet. Direction with this would greatly be appreciated.UPDATE ***9/27/15***I finally replaced the ACDelco fuel pump discussed above with an aftermarket one (Hollander 323-01229). Significantly cheaper and it has been doing well so far. No more fuel trim problems, fuel pressure is normal, and no more weird sounds coming from my fuel line near the fuel tank. The ACDelco brand is not what it used to be. Parts are poorly made from either Mexico or China.

i made the mistake of buying the aftermarket pump, for my 1999 Silverado ext cab. It lasted 2 months and shut down. I was put off by the parts store prices for a new AC Delco pump. I never thought to look on Amazon! There it was! For 50% less than PepBoys or Autozone or anyone else! I decided to take advantage of the free shipping, and still received my package in about 4 days (including a weekend and holiday!). The pump was easy to install, as I had done it before. I removed the bed, took out the junk aftermarket pump, installed the new pump, put on the new plug and lowered and bolted the bed back in place in a little over an hour! Pump fired right up, and my truck was back on the road. The multitude of positive reviews makes me confident that this pump will be there for a long time to come!

I was able to install the pump fairly easily by lifting the bed on my 2000 Silverado. The only snag was replacing the fuel pump power connector but I was able to unsnap a few of the cable ties and solder on the new provided connector beside the truck. The pump includes some crimp connectors but I didnt trust those to not corrode or vibrate loose. I live in SC so the rust was very minor but if you live anywhere near the salt belt I would plan to replace the locking ring ACDelco TR14 GM Original Equipment Fuel Tank Sending Unit Lock Ring at the same time.To make the install easier, I would buy new fuel line locking clips along with the pump, but I was able to salvage the old ones from my previous pump.