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rebuilt 4l60e problems


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I posted in this forum cause its a 90's style truck, but it is a 2000 denali with the 5.7/

 

Anyhow, i bout the truck a couple years ago with a knock. It had 252,000kms. dropped a used engine in in the fall and all went well. In the spring i went on a short highway trip and it threw a slip code p1870 and was shifting hard til i restarted. It didnt have any issues on the way home but i babied it. I decided since i had some cash in the bank to just fix it and avoid any issues in the future, I picked up a rebuilt trans. It was advertised with hardened sunshell, vette servo, new clutches etc..

 

Installed rebuilt trans the last week of may 2016. first week of june i emailed the seller complaining that the trans would not stay in overdrive when it was hot out. we discussed symptoms and decided to throw some $$$ at the truck. Engine was kinda gutless, needs tuneup bad, over the summer i threw parts at it and never really drove out of town. winter came and symptoms mostly stayed away, but next to no highway driving. Spring rolled around this year and i decided it was time to look into it. Getting warm out and showing symptoms again. Truck now has 264,000kms on it. Hasnt been driven much, maybe 7000km on this rebuilt trans.

 

I took it to a great tranny shop in town to look at the valve body. We had decided there might be something worn out there. Maybe put in a transgo shift kit to replace some worn parts that might have been missed by the rebuilder.

 

Owner of trans shop says: "hy, im gonna put this pan cover back on and you can take your truck home and call the guy who sold this trans to you. Im not touching it. It looks any other high mile trans we get in here."

 

Pan has shavings in it. We pull the filter and its got tiny little metal parts and what looks like blue paint chips.

 

I was a bit baffled at the time so didnt think to take pics of the pan. I have included pics of the filter.

 

Ive contacted the seller and he has offered to fix it. I have to pull the trans and deliver it 90 minutes away, wait however many days, and go pick it up and bring it back to reinstall. Ill be down a week with no wheels....

 

Thoughts?

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What thoughts are you looking for?

If the guy can't do it right the first time does he deserve a second chance?

:happysad:

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It looks like you cut the filter open? The blue stuff looks almost like the paint-like coating that is on the servo cover O-ring. How that much would get rubbed off and sucked up into the filter is beyond me. Just a guess though. Is any of it in the pan? Anyway, if it were that, it would imply that the servo cover is improperly installed, which will allow it to NOT shift into OD, as the cover acts as a stopper for the 4th piston to push again to engage the band. Are there any leaks from the transmission or loss of fluid?

 

As far as the shavings go, good luck. It sounds like damage has been done. Keep us updated!

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Yes we cut the filter open. I have 0 oil in my driveway and I've idled lots of places with the heat on. And I have an OCD habbit of looking under the truck for puddles. Never seen a leak.

 

Are you talking the servo on the side of the trans? If I got a pic could you tell?

 

There is the same color blue on one section of the pan gasket on the outer rim of the gasket....

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Yes, the round cover on the side is correct. You mention the blue on the gasket....that sounds like someone goobered some blue RTV on the pan gasket to stop a leak, or if the pan edge was warped, to get it to seal properly. That's likely what got sucked up into the filter, but almost certainly not a cause of failure, short of it completely clogging the filter media and starving it of fluid. The few flecks of it wouldn't have had any effect, hence their capture in the filter.

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  • 5 weeks later...

Band and 3-4 clutches worn out? He says the only way anything got into that filter is if it came from the cooler because it wasnt cleaned properly before the trans was installed. And that the wear looked like the trans was low on oil. I went through 2 cans of brake cleaner blowing out that cooler and ran air through both lines and nothing ever came out. Its an external cooler, it doesnt use the rad. The thing wasnt staying in overdrive a week after install. Low pressure? They said the cooler is clogged or its electrical. You can see on a scanner the pcm commands 4th gear and the truck stays in 3rd til 70+ and wont hit 4th unless you let up on the gas. Im terrified im going to put this trans back in after its repaired and its going to do the same thing.... Im already past $2500 for a $1000 trans..

 

Basically i guess hes repairing the damage but blaming me for what caused it. He wants me to buy his austrailoan made cooler. I dont mind doing that if its a good one. I still think based on what ive learned and read that there is a problem in the valve body causing lack of pressure for 4th. Am i way off?

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