How reliable are the 2011 Yukon Denalis?

[Joseph Garcia]

I have checked into the difference between the 385HP and 403HP engines. From what i was told on Hp Tuners the difference is in the tune.

This is from Hp Tuners forum.
"Comparing several stock 07 Yukon and 07 Escalade files only one table I see different that would account for any HP increase in the Escalade are the values in this one table. The pic shows show how much less timing the Yukon has in PE mode vs the Escalade and only at 5200 rpm and higher. All the other timing and fuel tables are the same. Most tuners would zero that table and tune the main spark tables for performance anyway"
View attachment 477563

You are correct. The motors are identical, with the only difference being the gas recommended (91 in Escalade, 87 in Denali) and the associated tune. I got this straight from Jarrad at BlackBear Performance. It was one of the items that supposedly justified the additional $11,000 price for the Escalade over the Denali.

 

[SpareParts]

Wonder how many people know the engine is exactly the same and the only difference is the tune above 5.2k rpm.
I would also think that at the speed and rpm it takes to get there a person can not even feel the 20 or so extra hp.

 

[petethepug]

The tune GM put in the NNBS Escalade in UAE / Dubai is 420hp 460tq.

Better fuel & no emissions means something.