We have a 2009 Tahoe LT, 5.3 6 speed automatic. I'd like to get a tad more top end speed for those "high desert" passing situations. The Tahoe seems to have a lot more available that the computer allows.
Any reasonable suggestions?

Regards,
Mr.B

 

I would suggest a BB (Black Bear) Tune. The computer in the vehicle will need to be reprogrammed in order to eliminate the factory speed limiter.

Here is the Black Bear Performance website. -
Black Bear Performance :: Custom Tuning Solutions for 96 and newer GM Vehicles

Here is a thread on another forum that provides some good information about tuning. -
Tuning Info: Why To Tune and How it is Done - Chevy Tahoe Forum | GMC Yukon Forum | Tahoe Z71 | Cadillac Escalade - Tahoe Yukon Forum

 

my '09 seems to stop at 98 MPH. is that what you've found?

without a limiter, what will these things hit?

Keep in mind, the tires are only rated for 120 I think.

 

Our Tahoe seems to be limited to around 100 mph. The tires are speed rated to 118, so I would like to have a top end around that mark. And, as I said earlier, I would use this in those high speed passing situations where the traffic flow permits.

 

Didn't know there were any autobahns up there. What's the limit?

 

We travel the high desert route ( Nevada, and to some degree, Arizona) on our way south for snow birding winters.... The speed zones, along the way, vary 70 - 75 mph max. So, passing events can and do exceed 85+ mph...
Speed zones in the great white north also vary but I don't recall seeing any posted over 110 kph (70 mph +/-)
Regards,
Mr.B

 

Well as I'm sure you're aware, two and a half tons of steel at 100 mph doesn't leave any room for error if something bad happens.