I had two 2500hd's and had to replace the bolts on both.My buddy was a shop foreman at a GM garage and he said it was a constant issue.what was the problem with the bolts. if you had to change a manifold or gasket some might break but that was due to galvanic corrosion and pretty much all manf. suggest not reusing the original bolts
I'm talking about the bolts just breaking.I had it happen on two different trucks and the manifolds and gaskets were never touched prior.One day you just notice an exhaust leak.Actually my one buddy was a shop foreman at a GM dealership and another buddy was a service manager and a different one.They both claimed that was common.It was a cheap fix both times but a pia getting the broken ones out.I was able to get a couple out with vise grips but had to tack a nut onto a couple other ones.I also broke a couple others off even though I soaked them with liquid wrench a few times per day before changing them.we were SE pas largest gm dealership i removed a ton of broken bolts but the majority came in for leaky gasket or rusted or cracked manifolds. the bolt issue was when you went to remove them and they would snap off in the head. galvanic corrosion is when 2 dissimilar metals make contact alum. head to steel bolt. the replacment bolt threads were coated . i dont ever recall us changing bolts just to change the bolts. between co workers, family, friends and my own 3 silverados i have never heard of any recalls or had any issues for bolts . your buddy probally got it under warranty for gaskets and replaced with new bolts which is sop.
I pound my trucks.They go where I need to go and I plow with them and haul an 11k lb horse trailer almost every weekend plus hay wagons all summer.For years I did almost everything with a 1/2 ton silverado except I towed a smaller horse trailer.I bought a couple 2500 hd's with a 6.0 and then a duramax.Other than changing the oil and air filter,I don't maintain them very well either.I never had one major problem with any of them and all had over 200k miles when I got rid of them.As far as reliability goes,I couldn't complain about any of them.I drive a 2500 Ram now but that's only because a buddy of mine owns a chrysler dealership.I was reluctant to buy one but almost had to,just out of loyalty.I have 36k miles on it in about 15 months and honestly,it's the nicest truck I've ever had.The jury is till out but I'd buy another one at this point.Nothing against Toyotas but I don't see how they could be uncomparable to a GM when it comes to reliability.I bought a bank repo 05 2500hd.I almost didn't buy it because the previous owner obviously used it very hard and had a plow on it.It had 56k miles on it and the bank excepted my ridiculous offer.It wasn't super clean and I got such a good deal that I beat the crap out of it and never really took care of it.I was taking my daughter to a barrel race on the other side of Ohio in April one year.I had to put the truck in 4wd to get out of the barn and broke several land speed speed records getting out there.I probably averaged 75mph on dry roads pulling a horse trailer in 4wd.I didn't realize it until we got out there and I felt the front end binding a little when I turned into the arena.The tranny got so hot that transmissions fluid was spraying all over the place from a breather.I never changed the tranny fluid and my buddy is still driving that same truck.Other than new rockers,he hasn't done anything to it.My only complaint with that truck was the gas mileage.I've owned many trucks in all brands over my years, and my favorite is the Toyota Tacoma....back in 2010 I wanted a full size truck, I looked them all over.....I went with the Tundra, I agree the gas mileage sucks but reliability for the Tundra vs others can't be compared.
Nope,just a testament that they're reliable vehicles.I had a 99 silverado with that small 4.8L.I used to pull a 2 horse trailer with that all over the state and never took great care of it.I sold that to my same buddy who bought my 04 2500.That thing was still running for him with almost 300k miles on it but the underneath eventually rotted out.So it sounds like GMs get more reliable if you beat and neglect them