Weird Cruise Control Issue

[bednar1320]

Max torque is at 1600 RPM

Here are specs for an early year like a 2014. Later ones had small increases. My 2015 is 865, now they are 930.

Engine: Cummins 6.7L inline-six
Turbo: Single with variable nozzle
******Head Material: Aluminum-alloy******
Block Material: Cast iron
Bore: 4.21 inches
Stroke: 4.88 inches
High Output Horsepower: 385 hp at 2,800 rpm
High Output Torque: 850 lb-ft at 1,600 rpm
Base Auto Horsepower: 370 hp at 2,800 rpm
Base Auto Torque: 800 lb-ft at 1,600 rpm
Manual Horsepower: 350 hp at 2,800 rpm
Manual Torque: 660 lb-ft at 1,500 rpm

Aluminum head????
I don't think so..………..

 

[jhenderson]

Aluminum head????
I don't think so..………..

Where did that come from?

 

[WyoGuy]

What it the TSB number? I have been fighting this issue since my truck was new. My dealer keeps saying they can't find anything so it's 'normal' which I knew isn't the case. Thanks for the help as this has been very frustrating!

 

[HookMeUp]

I will get this posted tonight when I get home.

 

[WyoGuy]

Thank you!

 

[HookMeUp]

This is what the dealer di to fix the issue.

 

[Learjet]

so it works better now?

 

[HookMeUp]

Much better. Same hills I was complaining about in my OP, no downshift.

 

[WyoGuy]

This is what the dealer di to fix the issue.
View attachment 111224

This is what the dealer di to fix the issue.
View attachment 111224

Thanks. I'll take it in and have the dealer check for the new PCM flash.

 

[SnoKing]

This is what the dealer di to fix the issue.
View attachment 111224

The TSB number visible in your post is an ucorrect one. Can you post others that are listed on the sheet? SnoKing