Jump to content
  • Sign up for FREE! Become a GM-Trucks.com Member Today!

    In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. 

Recommended Posts

Hey there I have a

 

2015 1500 5.3L LTZ Silverado 4WD (midnight edition)

 

Anyway I was doing highway miles and got a console alert that oil level was low. Stopped at the auto parts store, added one quart, saw level was still low.. so I added a second quart which filled it up. I climbed under the engine in the parking lot, and took a peek at the oil pan. I noticed the gasket was all mushroomed out and there was oil pretty much caked everywhere lower than that seal.

 

I took it to the dealership to get it repaired and the service manager told me the strangest stories.

 

He said

1) the lower oil pan is one time use

2) the lower oil pan gasket is RTV

3) the upper oil pan gasket was also leaking

4) the crimp in the oil cooler line was leaking (didn't realize my engine even had an oil cooler!? Why would a light duty truck have this equipped?)

 

He quoted $2000 for everything including 10% sales tax.

 

Does this raise the alarm for anyone else here? I only saw oil from the lower gasket downward. The parts on rock auto are about $70. I think I'll have to do this one myself but would love some thoughts. 

 

Thanks in advance.

 

Link to comment
Share on other sites

1. Haven't heard that before. It's a metal lower pan and I've put them back on before. Just made sure they were straight and used the correct RTV.

 

2. Yes, (above). That's why it looks like it pushed out more than likely but really that is pretty normal.

 

3. Leaking leaking or was it just seeping out some? That one is alot more labor to do. Lots more needs to come out to get the lower pan out.

 

4. Pretty normal. They have been using oil coolers on half ton GM trucks for last 25+ years on tons of trucks. Some trucks weren't optioned with it but a vast majority of them because of the towing packages.

 

 

Is it leaving drops of oil on the ground? If it was my truck I'd degrease the whole underside and take a better look at where the seeping from. If it's not dripping all over the place then it's likely burning oil too.

Link to comment
Share on other sites

2 hours ago, CamGTP said:

1. Haven't heard that before. It's a metal lower pan and I've put them back on before. Just made sure they were straight and used the correct RTV.

Yeah me neither. I'll replace the whole thing because now I'm thinking I need to.

2 hours ago, CamGTP said:

2. Yes, (above). That's why it looks like it pushed out more than likely but really that is pretty normal.

Agreed.

2 hours ago, CamGTP said:

3. Leaking leaking or was it just seeping out some? That one is alot more labor to do. Lots more needs to come out to get the lower pan out.

I for one didn't see any evidence of a leak or seepage from the upper pan. I couldn't even see a delineation where the lower pan connects to the bottom block, so I'm not going to touch it for now.

2 hours ago, CamGTP said:

4. Pretty normal. They have been using oil coolers on half ton GM trucks for last 25+ years on tons of trucks. Some trucks weren't optioned with it but a vast majority of them because of the towing packages.

 

I'm going to change out the line and gasket.

2 hours ago, CamGTP said:

Is it leaving drops of oil on the ground? If it was my truck I'd degrease the whole underside and take a better look at where the seeping from. If it's not dripping all over the place then it's likely burning oil too.

No drops of oil anywhere, so I agree it's probably burning some. I guess it would make sense if my oil cooler is running at sub optimal. May be chasing a running thread from here on though, especially if the burning continues after replacing the cooling line and the repairing main leak.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

  • Similar Content

    • By Jake_Melvin1
      I have a 2020 RST with the 3.0 LM2 Duramax with 79k miles… the flywheel failed when I was driving down the highway and left me dead in the water.. I had it towed to the dealership 4 weeks ago and they called today and said the transmission and the engine needs to be replaced. Has anyone experienced this with their trucks? I never towed anything heavy and was religious with service.. luckily all covered under the 100k powertrain warranty… 
    • By Sir_Griglesworth
      Hello everyone. I've recently purchased a 2020 Silverado 1500 from a dealership. I found out late in the sale that the truck was used as the dealerships "loaner" which didn't really bother me even though I know people beat up those vehicles. Anyway, I'm pretty in-tune to vehicle sounds and I had a couple of questions regarding noises I'm hearing from my vehicle. 
       
      The first is a clunking noise and a physical jolt when I shift from Drive to Reverse. I have my foot on the brake and am on a flat surface. I notice it a lot after I've been driving for a while and go to back into my garage. I took the truck back to the dealership and they chalked it up to bad U-joints. They slapped 2 fresh sets on, but I've still go the issue. Any ideas what it may be? I don't feel like anything is going to fail, but I also don't like the sound and don't think it should be that way. I have another service appointment next week and I'd like to help them out with ideas considering they don't really seem to care.
       
      The second is a ticking noise coming from the undercarriage. I' got under the truck today and believe it's coming from the rear portion of the engine, but I'm not for certain as I've never been beneath the truck while it's been on a rack. The noise cannot be heard when standing at the front with the hood up, but I can hear it very noticeably when standing at the driver's door. I do not hear it as the engine is heating up, but that could be because every other component under the hood is loud as h*ll while the truck is heating up. Once the engine is approaching operating temp, it's very noticeable. As you can hear from the short video, it's every .5 to 1 second or so and is always present during idling. Again, may not be a big issue, but I hate hearing things on my vehicles that I can't attribute to something else.
       
      Thanks for reading my ramblings. I can try to post longer videos if anyone needs. Thanks in advance!
      IMG_8898_Trim_Trim (2).mp4 IMG_8910_Trim (2).mp4
    • By chevelleusaf
      TIA for your help and time…
       
      BLUF: Ticking noise under truck, not heard from top of engine compartment.
       
      I noticed a ticking/clicking/pinging noise under my truck today, took a video, hopefully you can hear it.  Anyone else?
       
      Truck was in Park and Neutral (Parking brake engaged) and still heard the sounds.
       
       
    • By Derick R
      Hello all I'm new to this read forums my entire life when needing help on a issue someone had back in 99. But anyway I have a 2008 Yukon xl 5.3 bought it a few years back quickly realized there was a issue on top of issue. I got screwed and screwed big time. Truck was sold as 168k miles. It was clean nice good looking truck for 4800 bucks. Turns out won't go over 65. We'll we just said screw it and run it for a while until we got our excursion. So now I've been trying to fix it. I need help I've tried refresh at the dealer it sat there for a entire day in a bay with a tech and they couldn't figure it out. So back to the drawing board. Later on tried to trade it in they pulled the carfax trunk our dude swapped the cluster and it was said the last reported mileage was 278k. Well ******. I want to figure out why it will not surpass 65. It has all the gears. Engine has all the power. No limp mode no codes. I have even pulled the cluster and drove it and that didn't change anything. Please help. Thank you. Derick r. 
    • By bpdamas
      Does anyone know how to add the digital key for the GMC Hummer EV? It says it should be in the app to select but I don't see it there. I followed the manual instructions as well but don't see the option for a digital key. If anyone knows or can help I would appreciate it. 
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Forum Statistics

    241.4k
    Total Topics
    1.4m
    Total Posts
  • Member Statistics

    305,419
    Total Members
    8,960
    Most Online
    Jay Kuropatkin
    Newest Member
    Jay Kuropatkin
    Joined


×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.