Hope they resolve it for you or give replace with a new truck.
2025 2500 HD with a transmission leak.
- Thread starter Jlom
- Start date
Well, it's going back to the dealer. Got the truck back with 800 miles and at 2200 miles the same place in the head is leaking.
This is officially going to be the 2nd repair attempt since on the first visit they didn't see the leak. I'm hoping they replace the engine and not just the head, I'm sure the block is less than perfect after being wrenched on twice and the tech said head bolts were overtightened.
This is officially going to be the 2nd repair attempt since on the first visit they didn't see the leak. I'm hoping they replace the engine and not just the head, I'm sure the block is less than perfect after being wrenched on twice and the tech said head bolts were overtightened.
The duramax head bolts are torqued down pretty tight. There isn't a ft lb number, it's 120° after 59 lb ft. I'm not disagreeing with your mechanic, just stating the head bolts are torqued down in stages with tools that won't over torque. Now then, it was made by man and he's not perfect, anything could go wrong.
I'd feel the same way, if'n it was my engine being opened up twice before the first oil change.
What are GMC saying about replacing your truck?
Lakebuster
Member
Do they remove the entire cab to do head gasket? My friend had a 6.0 powerstroke and I remember going to the dealer and seeing the cab up in the air. As soon as warranty was up he had something done and it became a great truck, would still be running if his Son had not totaled it!
Koolbreezeya
Active member
Bummer!!
This is a gas truck, not a duramax. I only pull a camaro to the track and plow with it, I didn't really need the diesel. GMC gave me 50k points and a "better luck next time" I just filed a claim with the BBB autoline so hopefully that gets their attention.
Its a 6.2 gas engine then.
Oh dang, this is the first time of hearing this kind of problem on the 6.6g.
Sorry, I assumed it was a 6.6.d, not enough HD gas burners with problems.
When you say, "Better luck next time", are you saying gm is wiping their hands of repairing your truck or buying back your truck?
If'n you believe your shop and mechanic are good, I don't think I'd be worried about keeping your truck.
I'm setting here clear minded, without the sickening feeling and emotional stress I'm sure you have.
But then again, they already had the head off once and they didn't do a good job diagnosing the leak to begin with, so how good are they?
I'm setting here clear minded, without the sickening feeling and emotional stress I'm sure you have.
But then again, they already had the head off once and they didn't do a good job diagnosing the leak to begin with, so how good are they?
I believe they did what they thought was best. The leak coming from where it is is the result of a bad head that only leaked when the engine was cooling down because the dissimilar materials (aluminum and cast iron) have different thermal properties regarding expansion and contraction. On a cold or hot engine, a pressure test produced no leak, it was only in this weird in-between temp that it would drip.
Will post back with whatever resolution I'm stuck with.
Will post back with whatever resolution I'm stuck with.
You are the first I've seen with such issues on the 6.6 gas. Shame on GM for not giving you a new engine. Coolant mixed with oil = recipe for disaster. Guaranteed it wasn't completely flushed out of the block. Sounds like a major lack of quality control in assembly.
If you keep getting the run around consider a lemon law lawyer
