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  1. TylerHagerdorn

    Interior Dimming Issue 04 Burb

    Anyone? Nobody has any insight on what to check?
  2. TylerHagerdorn

    04 Suburban Cluster Issue

    I've mentioned it before in this post. It's a brand new Delphi pump. I've been in the parts business and working on vehicles for over 14 years...never had a single Delphi bad out of the box. It's not the pump. There is a PCM update to fix the issue of the fuel gauge not reading fully full...so...
  3. TylerHagerdorn

    Interior Dimming Issue 04 Burb

    I couldn't find a thread on this exact problem, or a solution. My 04 Suburban seems to have an issue with the cluster and the rearview mirror screens being dim when it's sunny out. At night it's just fine. Cluster is new, and the company tested it multiple times and sent me photos of the DIC...
  4. TylerHagerdorn

    2004 Suburban PCM/Fuel Level Problem

    Did you not read the whole thread? The cluster is NEW. Purchased from ISS which is one of the best, they are the ones who started rebuilding them for GM back in the day. They have a contract with GM. It's not the cluster I can promise you that. As someone had previously mentioned here, it...
  5. TylerHagerdorn

    2004 Suburban PCM/Fuel Level Problem

    My cluster is from ISS. They are the ones who started rebuilding GM clusters many years ago. GM was sending them to the dump when iss started having them send them to them to rebuild...so I doubt they'd let it go with the needle in the wrong spot... especially two in a row because the first one...
  6. TylerHagerdorn

    2004 Suburban PCM/Fuel Level Problem

    Yeah I'm looking into one. But either the dealer or a local shop with the proper software can flash the PCM to my truck and apply the updates at the same time.
  7. TylerHagerdorn

    2004 Suburban PCM/Fuel Level Problem

    Right I know what your saying. I was just saying the PCM in my truck is not the original one and still wears the original vin of the other truck. Because it needs flashed. And here's what searching my vin on tis2web shows.
  8. TylerHagerdorn

    2004 Suburban PCM/Fuel Level Problem

    Mine is an FG0811. Mines a 31 gallon tank. And I'm leaning towards it needing flashed because it's just a junkyard PCM from an 04 Suburban with the same rpo codes so it works but I know it needs flashed.
  9. TylerHagerdorn

    2004 Suburban PCM/Fuel Level Problem

    Yeah I'm not dropping the tank again lol. Especially with a full tank. I know new can be bad...but in my 14 years of working on cars and in parts I've never seen a Delphi bad out of the box. I don't know if I mentioned to you, but the issue is the PCM is reading empty via the values...while...
  10. TylerHagerdorn

    2004 Suburban PCM/Fuel Level Problem

    Hey strutaeng, I've done more testing now that I know how to properly read ohms. Never had to before in my life surprisingly. Gauge is sitting couple notches under the full mark. Here's my readings: 238 ohms 2.46 volts According to the chart, that reads empty with the low fuel indicator on...
  11. TylerHagerdorn

    2004 Suburban PCM/Fuel Level Problem

    Fless, I'm outside currently testing ohm reading and voltage reading. Remember the tank is full. I let it click off and stopped. I know overfilling is bad. Here's my ohm reading. 238 ohms Voltage reading 2.46v. I checked this directly at the PCM and at connector C152 under the fuse box...
  12. TylerHagerdorn

    2004 Suburban PCM/Fuel Level Problem

    Also, I've read that the PCM relearns after about 150 miles of driving...we drove about 180 miles on the gas truck PCM. And I've only driven about 15 miles since putting the correct PCM in. So, is that part of the problem? Some people were saying you can have the key on and remove the two...
  13. TylerHagerdorn

    2004 Suburban PCM/Fuel Level Problem

    Voltage reading at the wire going to the PCM is what I'm checking. Direct from the service manual. Obviously there's an issue with the gauge reading. Tank is dead full. Voltage I just got was 2.51v. According to the service manual, that is "Low Fuel Indicator On" or "E"...which, the gas truck...
  14. TylerHagerdorn

    2004 Suburban PCM/Fuel Level Problem

    I put it above, but it's a Delphi. All I use for GM. Never had one issue in all the 14 years I've been working on cars and working in parts. Never have I seen a Delphi pump fail. Not sure the one in my truck was bad either. It was a Delphi too. Part number is FG0811. For the 2004 VIN Z Flex...
  15. TylerHagerdorn

    2004 Suburban PCM/Fuel Level Problem

    Alright so I just went and filled it up, and it won't go up past full where it should be. And when I got home from my short drive it went down a bit more between full and 3/4. I'll try and attach a picture of the gauge right when I filled it up. It won't go up further than that. I know that the...
  16. TylerHagerdorn

    2004 Suburban PCM/Fuel Level Problem

    I've been working in parts and on cars for 14 plus years. I have never in my life out of hundreds I've sold seen a Delphi pump defective off the shelf. Cheaper pumps yes. But not Delphi. Pump was just installed Saturday. I had a PCM from a GAS truck installed and the wiring is reversed as I've...
  17. TylerHagerdorn

    2004 Suburban PCM/Fuel Level Problem

    Hey Y'all. My 04 Suburban is driving me nuts. I'm not sure where to go from here. Heres what's been done. New rebuilt cluster, new Delphi fuel pump, used PCM matching numbers and from a truck with matching RPO codes. I had a junkyard PCM I installed on Saturday, then we installed a new...
  18. TylerHagerdorn

    04 Suburban Cluster Issue

    Connectors are clean now. I spliced in some clean connectors because the original ones had some sort of oil substance in them. Looked like motor oil. I cleaned them but it kept coming back so I spliced in clean ones. There's no pin fitment issue. I don't own a fancy scan tool that shows fuel...
  19. TylerHagerdorn

    04 Suburban Cluster Issue

    Well I'm still figuring it out. I got a known good PCM from a truck with matching RPO codes and a flex truck because it does matter. We put one from a gas truck(VIN T) and the fuel level wires must be backwards because full was dead empty and it moved like it should. But here's the issue right...
  20. TylerHagerdorn

    Fuel Gauge Issue 04 Suburban

    Well picked up a good known PCM from a flex truck matching rpo codes...still not reading over a half tank when there's between half and 3/4...so did my cluster get screwed up? I can't think of anything else it could be. My alldata subscription is expired, and I know there are resistance values...
  21. TylerHagerdorn

    Fuel Gauge Issue 04 Suburban

    It does matter. The L59 PCM is different from the LM7...I just plugged my original computer back in, and it reads the right way. However it's definitely bad. Because I know I have 3/4 tank in my truck, but it's only reading 1/2 tank. So my PCM is bad on the fuel level signal. The wiring is...
  22. TylerHagerdorn

    Fuel Gauge Issue 04 Suburban

    We ended up putting a new Delphi fuel pump in it, since I still had it under warranty from last time. But the strange thing is, the fuel gauge is reading backwards. So it's showing dead empty is full. Only thing I can think of is the PCM I got from the junkyard was from a VIN T, which is the...
  23. TylerHagerdorn

    Fuel Gauge Issue 04 Suburban

    I'm sure you could. I just use butt connectors on every wiring job I've ever done. Never had an issue. It's just going to be very time consuming. Heating wires is not necessarily good, because heat can and will affect wiring, and I've watched a lot of mechanics over the years use the "crimp and...
  24. TylerHagerdorn

    Fuel Gauge Issue 04 Suburban

    I've seen people say that works...but it's not going to work if the contacts that ride against the resistor on the fuel level sender are broken. I don't believe it's a sending unit issue right now. I pulled the PCM connectors off again and they are covered in oil yet again. Opened the computer...
  25. TylerHagerdorn

    Fuel Gauge Issue 04 Suburban

    Alright I don't know if I've made a post about this or not. So I apologize if I did. More issues with the fuel gauge on my Burb and it's really making me angry, because I don't ever know how much fuel I have. And I've never had this trouble before in the other 3 GMT800s I've owned. I have a...

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