Questions about GMC Sierra's

[MrGiggles]

3 hours ago, snagged in outlet 3 said:

I'm not a fan of undersized engines pumped up like Ecoboost to achieve similar power.  Seems like they would wear out quicker.  Would you agree, @gotmuddy?

I agree with you. More stress equals more wear, and there's a lot more complexity added with turbos. Plus a fuel issue becomes a lot bigger deal with forced induction on gas engines, lose fuel under boost and things go bad real quick.

Seems like Ford learned some things with the Triton and 6.0/6.4 diesel debacles. They really invested in engine design and the results show. 

4 hours ago, gotmuddy said:

for a new diesel? buy a good warranty.  I see lots of dodges/fords with high miles on new trucks meaning they are using them for hot shotting and delivering campers.  Fords are cheaper to work on(go figure).  And the Fords have the fuel rail return setup to go into the fuel filter housing instead of the fuel tank meaning if you have a problem (fuel pump) the metal goes into the filter instead of the fuel tank which saves lots of money.

We see have started getting quite a few cam/lifter claims on 5.7 hemi engines then we used to. Dodge has a TSB that says if there is metal in the valve timing actuator then it needs an engine instead of a repair.  We see quite a few timing chain issues on the ecoboost, but ford has a special policy on them now that assists up to 90k with partial coverage.

Timing chains are cheaper to replace on the ecoboost than cam and lifters in either pushrod engine.

That would make sense since the whole front clip doesn't need to come off to slide the cam out. 

[gotmuddy]

1 hour ago, MrGiggles said:

I agree with you. More stress equals more wear, and there's a lot more complexity added with turbos. Plus a fuel issue becomes a lot bigger deal with forced induction on gas engines, lose fuel under boost and things go bad real quick.

Seems like Ford learned some things with the Triton and 6.0/6.4 diesel debacles. They really invested in engine design and the results show. 

That would make sense since the whole front clip doesn't need to come off to slide the cam out. 

Lots of learning for sure.  the 6.0 is a great engine, but ford decided it would be a good idea to remove the coolant filter from the international engine, which led to most of the problems.

They each have their issues for sure.  I dont like car payments so I stick to older vehicles.  My next purchase will probably be a 2005-2006 tundra.

[Terrierman]

I don't know a lot about engines, but we had great performance and trouble free long life from the Ford V-10.  Not so hot on fuel economy though.

[snagged in outlet 3]

I'm a firm believer in "lemons".  We used to make 528 cars per shift.  Buick Park Ave, Olds 98's, 88's and Pontiac Bonneville.  I worked one line over from final process and my buddy put the 3 gallons of gas in them then they started them up.  It was extremely rare to have one not start.  That said seems like if there was a problem with a car it usually had a couple repair tickets on it not just one.  

To this day it still amazes me that we would go weeks without one starting.  We're talking 40 pound wire harnesses with every available option.  

If you get a good one, keep it.

[fishinwrench]

1 hour ago, snagged in outlet 3 said:

 

To this day it still amazes me that we would go weeks without one starting.  We're talking 40 pound wire harnesses with every available option.

When they first started putting electric fuel pumps inside the fuel tanks there were fuel pump failures galore in every brand of vehicle that was equipped with them.      Fuel pump failures are way less common now it seems.  

[Ham]

I have a 2017 Sierra. I get 20 mpg in town, 25 mpg on Hwy, and 16 mpg dragging the BassCat. 
mom pretty Happy with my truck. 80K miles on it now

[MrGiggles]

3 hours ago, Terrierman said:

I don't know a lot about engines, but we had great performance and trouble free long life from the Ford V-10.  Not so hot on fuel economy though.

That was one of the good ones, along with the 5.4/4.6 2V motors, although they still have the spark plug issues. It's the later ones that were a trainwreck. 

I still see them around quite a bit. Farmers loved them, super reliable, always started in the winter, and would pull pretty good. They love to break manifold bolts and eat coil packs but are usually pretty trouble free.

[snagged in outlet 3]

2 hours ago, MrGiggles said:

That was one of the good ones, along with the 5.4/4.6 2V motors, although they still have the spark plug issues. It's the later ones that were a trainwreck. 

I still see them around quite a bit. Farmers loved them, super reliable, always started in the winter, and would pull pretty good. They love to break manifold bolts and eat coil packs but are usually pretty trouble free.

Hemis break manifold bolts too.  Mine has broken 6.  All covered under warranty.  Telltale clicking.  

[Maverickpro201]

12 hours ago, Ham said:

I have a 2017 Sierra. I get 20 mpg in town, 25 mpg on Hwy, and 16 mpg dragging the BassCat. 
mom pretty Happy with my truck. 80K miles on it now

What motor do you have in it?

And what is the rear-end gear ratio?

[gotmuddy]

10 hours ago, snagged in outlet 3 said:

Hemis break manifold bolts too.  Mine has broken 6.  All covered under warranty.  Telltale clicking.  

They are extremely common, in fact I have not seen a motor that has a bigger issue with them than the 5.7 mopar