Tow Haul mode?

[Jaycenk]

Anyone know if any of the 98 5.7 vortec tahoe's or yukons came with tow haul mode on them? I'm wondering if the PCM has that capabillity to do tow hual mode.

 

[fyremanpat]

Best bet would be a 0411 pcm swap.... at least thats what Ive heard. Around 100-150 bucks, about 2-3 hours of work and a ton of tune options... including tow haul mode

 

[Jaycenk]

K thanks man

 

[sleepr]

I've been doing some research on this swap and was wondering if there is much gain to doing this if your mostly stock, if you have a free flowing intake and exhaust then do the swap and get a custom tune would it be worth it?

 

[brooks93]

I did the 0411 swap and really my only upgrade is cat back exhaust and it was a very noticeable improvement with just the base express fan tune for my truck. also gained about 1 to 2 mpg depending on how I drive.