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  1. Angelo

    Fluid leak at rear diff?

    I just changed the gasket and oil about 15k miles ago. I don't know when this started leaking but I just discovered that my rear diff is covered in fluid on the front and at the bottom of it. I guess the gasket is probably what's leaking at the bottom of the diff cover, but what about all that...
  2. Angelo

    Fluid leak behind master cylinder

    I noticed either brake or power steering fluid all over my chassis and finally found the source of the drip. It was almost directly below master cylinder, and I found the source to be between the MC and whatever is behind it(brake booster?). Its a 1996 6.5l diesel k3500. Is there a seal between...
  3. Angelo

    Lower ball joint size identification on '96 k3500 4x4

    I need to order new lower ball joints for my 1996 4x4 k3500 and see that there are 2 diferent sizes, and for forged, welded, or stamped control arms. How do I tell what size I need and for what control arm? Pardon me I didn't know there were these variations for our trucks. I see 46.13mm and...
  4. Angelo

    Low (fuel) pressure switch that closes at <= 5 PSI

    This is for a 1996 6.5L TD ambulance which weighs approx. 12,500 lbs. Currently using a 1993 lift pump and have been happy with the higher pressure, but I want more. Right now idle is 9-10 PSI but it will drop down to 1-2 PSI at WOT. I plan to have 2 lift pumps inline. One will run constantly...
  5. Angelo

    1996 k3500 diesel hi beam wire color not same as in manual

    Its a Cheyenne with sealed beam headlights. Not the quad type. My hi beams aren't working and I've been trying to diagnose. The 3 wires at the headlight are light green, tan and black. I get no power to the lt green when switching the headlight dimmer switch to HI and no bright/hi beam indicator...
  6. Angelo

    6.5L k3500 getting hot all of a sudden

    It's a 1996 4x4 ambulance, so is basically always pulling a load. I've weighed it at 12,630 pounds total. Is that a lot? I did the HO water pump, duramax fan swap from Leroy diesel last May, 2022. Been doing fine until now. Driving up lots of hills, going slow the temps stayed below 210 almost...
  7. Angelo

    6.5l diesel leak dripping from bottom of starter. How to locate the problematic line

    On my 1996 K3500 6.5L diesel I noticed severe dripping from under the starter. It smells and feels like diesel fuel. The fuel lines have never been changed. I know there are return lines going back to the fuel tank. Is there a map or diagram showing all the fuel lines in this truck? I've posted...
  8. Angelo

    Dually delete on 1996 K3500 ambulance?

    I'm wanting to delete the dually on my ambulance, to do that I need some very large wheels. In order to fit these larger wheels, the truck will have to be lifted a few inches. I've seen it done on Fords but never a Chevy. This guy did it https://www.instagram.com/_bringles/, I'm hoping to do...
  9. Angelo

    Coolant pipe fitting leak downstream from thermostat

    I noticed coolant leaking from this fitting. It is a smaller diameter metal pipe going into the hex fitting, there is some kind of plastic in there and I can feel it is loose. Any idea what this is called and how I can replace the fitting?
  10. Angelo

    GP controller normal operation

    Having trouble with cold starts, but starts easy if block heater plugged in a couple hours(I had a couple other posts around this same issue but returning to testing today). I realized the GP are not staying on for the whole WTS cycle, I test with ammeter on battery cable and it's 40a on and...
  11. Angelo

    Hard start when cold

    Got this truck a few months ago here in Florida and we just started having some colder temps below 70-80 and now it is hard to start. When it does (cold)start there's a lot of white smoke around turbo and coming out exhaust, and idling very low, and no response to gas pedal until it "warms up"...
  12. Angelo

    Hard start when cold, low draw on GP wires when measuring with clamp on ammeter

    Like the title says. I got this truck a few months ago here in Florida and we just started having some colder temps and the truck is hard to start when the temps go below 70, which is still rare. When it does (cold)start there's a lot of white smoke around turbo and coming out exhaust, and it's...
  13. Angelo

    Using PTFE tape or Teflon tape on metal fuel line fittings?

    I can't find a M16X1.5 Male or female to barb that come with an "o ring seal", other than female pair at Leroy Diesel which is $28 after shipping. I need one female and one male. This is to be used behind fuel filter only (at LP) on a 6.5l K3500. Could these tapes be used as a substitute? The...
  14. Angelo

    LP bypass to Walbro FRB-5

    For a 1996 6.5L, I got the LP relay harness from Leroy diesel that "bypasses" the ops, and plan on switching the fuel pump to this Walbro FRB-5. I found Leroy diesel also sells this LP bypass kit - but all it is 2 connections for the hard lines to a 3/8 barb and it'd run $29 after shipping. Does...
  15. Angelo

    Tapping into fuel line behind lift pump?

    I need to connect a 12v diesel inside of my ambulance build which is a 1996 K3500 with the 6.5. It runs on 12v and diesel fuel and has it's own fuel pump, and will only consume 0.1-0.35 liters/hour according to spec although I haven't tested that. The heater comes with a separate tank that I can...
  16. Angelo

    Leak in front of transmission pan on '96 K3500 6.5L 4x4

    Seems like a leak coming from between oil pan and transmission pan but I can't identify what this piece is. What's flowing out seems to be oil or transmission fluid or front differential? It is visible in pics. The bolt on this piece was totally loose when I crawled under a few weeks ago but...
  17. Angelo

    No radiator cap on 1996 6.5L. How to drain and how to fill

    Probably a dumb question. I read that this must be a fully pressurized cooling system since there is no radiator cap on either side, only at the overflow reservoir. What would be the procedure to refill with coolant? I see a bleeder valve at the top of the radiator hose. Do I turn out the...
  18. Angelo

    1996 6.5L K3500 thermostat swap from 195 to 190 height/length question

    My truck gets to close to 210 (temperature) on the highway. It has a single thermostat. I pulled it out and it is a 195. I was looking to swap that to a 190. The gasket was in bad condition anyways, so doesn't hurt to do this now. I realize it may still reach close to 210 once open, this is more...

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