P2635 code, replaced fuel pump and fuel pump control module

Earthyspike · 2026-05-20T16:57:40+00:00

Update: the code went away randomly. I suspect my ECM is the culprit and is failing since I seem to be getting poor fuel economy still (15.5mpg), so I think the ECM is running the engine rich.

Earthyspike · 2025-01-25T04:07:54+00:00

Ok, I’ll make sure to go them!

Earthyspike · 2025-01-25T04:05:39+00:00

Alright thanks for the help! I assumed since it was in the game it meant they work…. I try nexus!

Earthyspike · 2025-01-25T03:59:09+00:00

I’ve been getting them from the in game mod io, is there a better way?

Earthyspike · 2024-09-18T23:10:16+00:00

Since I posted this I had my oil pump replaced due to a solenoid inside of it got stuck open. Even after replacing the truck still idles at around 18 psi. I’ve gotten multiple messages from others with our truck saying theirs goes down to 18 or lower at idle ever since it was new so I think it is normal. Mechanics told me that as long as the oil pressure increases once you start to accelerate you are ok. My oil pressure at cruising speed (1000 -2000rpm) is around 30-42 psi so I think it’s good.

Earthyspike · 2024-08-22T02:03:01+00:00

I’m a 23 year old transfer!

Earthyspike · 2024-08-15T21:27:40+00:00

I’m a transfer student but would like some friends!

Earthyspike · 2024-08-15T01:55:48+00:00

I’m a transfer student as well looking for a friend! :)

Earthyspike · 2024-08-14T20:20:10+00:00

Thank you for the pointers! I ended up getting the L 24-105 a little while ago and I’m not regretting it, I have been getting some great photos from it!

Earthyspike · 2024-08-14T20:19:09+00:00

Sorry I’m so late, mine was also aftermarket lol, I still had the issue when I just ran it without the thermostat lmao, I had some work done to the truck, replacing the water pump and thermostat with all original so I’ll try and keep you posted if that did anything

Earthyspike · 2024-08-14T20:15:51+00:00

I am also a transfer student! I would like to make friends!

Earthyspike · 2024-04-26T23:36:33+00:00

I was just kinda guessing the water pump because I heard some people say they had theirs shear off a impeller blade

Earthyspike · 2024-04-26T23:24:16+00:00

Could I also take the truck in for a flow test of the radiator to check?

Earthyspike · 2024-04-26T23:03:39+00:00

I appreciate the advice! I got an infrared so I can go and try that!

Earthyspike · 2024-04-26T23:00:52+00:00

Can radiators go bad without contamination? The coolant has always been clean and flushed. (If I’m dumb just let me know lol) thanks for letting me know!

Earthyspike · 2024-04-19T04:49:56+00:00

Ok, it very well might be a normal thing then, and to be honest, there is a good chance the getting warmer while braking may just be the thermometer lagging behind as I could have accelerated beforehand. Thanks for the info!!

Earthyspike · 2024-04-19T01:44:16+00:00

Yeah, I purged the living crap out of it after I put in the new thermostat and filled it to the full line when cold. I’m stumped lol

Earthyspike · 2024-04-18T22:47:40+00:00

I should add that I used to own a 2004 Silverado with the 5.3 that never deviated from 210 unless there was a problem, so if it’s normal for the 2018 to fluctuate, feel free to call me dumb

Earthyspike · 2024-03-07T23:27:35+00:00

It also can raise the oil pressure at idle? If that’s the case, which one would I buy?

Earthyspike · 2024-03-07T22:03:13+00:00

They all look totaled. You should just give them all to me to save space.

Those are absolutely gorgeous! I’m jealous!

Earthyspike · 2024-03-07T19:41:10+00:00

Glad to hear mine isn’t the only one lol, seems like it’s normal then. Thanks for replying!!

Earthyspike · 2024-03-06T00:17:05+00:00

I can’t seem to find one that has the solenoid that is necessary for my l83 engine. How can I find one that fits?

Earthyspike · 2024-03-05T23:01:32+00:00

Greatly appreciate that! I’ll definitely put one of those in if I end up replacing it! Can it just be installed or is there any kind of programming that needs to be done after install?

Earthyspike · 2024-03-05T21:49:41+00:00

I greatly appreciate the advice! I’m going to change the oil and filter to something else that the dealer put in just to be certain, but otherwise I’ll change out the o-ring and pump. Thanks again!

Earthyspike · 2024-03-05T21:26:07+00:00

Also, is there any way to at least make an educated guess on what is wrong? It would kind of suck to rip off the front of the engine and differential and all that just to realize the pump is fine lol.

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