99 Tahoe Programmer for MPG?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jayharrell · 01-05-2010, 02:19 PM

Well i love my 69, but its time to get the wife a little bigger ride to go along with it. I'm looking at some used 99 tahoes for around 3k. I hear from buddies that they get around 18mpg.

Question: Has anyone ever used a programmer to get some better MPG?

When i get one in the next month or so, i'm thinking a cold air intake and reprogram it. Maybe some dual exaust too. That should get the MPG up.

But i've seen sooo many different brands and types on jegs and summit its hard to pick a programmer out of the dark. So i'm looking to see if anyone has used one, what kinda improvment you might of gotten and such.
ttt

67ChevyRedneck · 01-05-2010, 03:01 PM

If you do any kind of city or mixed driving I would only expect 14-15mpg max out of a Tahoe. Maybe 16 if it's a 2wd and you have a light foot. On the highway a 4x4 should have no problem getting 18mpg, and some people get 19-20 out of the 2wd's.

Just don't want you to be disappointed. 13-15 is pretty much the average for any full size V-8 SUV.

My Z71 doesn't see the highway much at all, I seem to average 14mpg pretty consistently. It will hit 18+ but it has to be almost a 100% highway tank.

I used to frequent GM-Trucks.com and there was a lot of satisfied people there with the waitforme tunes.

Eddie H. · 01-11-2010, 10:17 PM

My 99 Yukon is a 4X4 with 3:73 gears. It gets 12-14 in town and 17-18 HWY. It would probably do a little better than that if my right foot were a little lighter. I tried the K&N air intake, throttle body spacer, etc. No noticable improvement in MPG over stock. There's really not much you can do to improve mileage in a full size v8 powered SUV with the aerodynamics of a small barn.

Manbearpig · 01-15-2010, 05:20 AM

http://www.blackbearperformance.com/

Give them a call

You can get the best mileage results from a custom tuned PCM over a programmer

jayharrell · 01-15-2010, 12:20 PM

I've been reading alot on that blackbear on gmtrucks.com.

Well good. Tax return is on the way, looks like i might gather a 98 2wd 4door in the next week or so.

Thanks guy.

01-05-2010, 02:19 PM	#1
jayharrell Gettin By on Gettin By Join Date: Jan 2008 Location: Cedar Creek, Tx Posts: 1,033	99 Tahoe Programmer for MPG?? Well i love my 69, but its time to get the wife a little bigger ride to go along with it. I'm looking at some used 99 tahoes for around 3k. I hear from buddies that they get around 18mpg. Question: Has anyone ever used a programmer to get some better MPG? When i get one in the next month or so, i'm thinking a cold air intake and reprogram it. Maybe some dual exaust too. That should get the MPG up. But i've seen sooo many different brands and types on jegs and summit its hard to pick a programmer out of the dark. So i'm looking to see if anyone has used one, what kinda improvment you might of gotten and such. ttt __________________ 69 CST10 LWB 455 Buick 00 S10 2.2 Vin5 76 GL1000 Naked 1bl VW carb "Adios to all the concrete; Gonna get me some dirt road back streets"

01-05-2010, 03:01 PM	#2
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: 99 Tahoe Programmer for MPG?? If you do any kind of city or mixed driving I would only expect 14-15mpg max out of a Tahoe. Maybe 16 if it's a 2wd and you have a light foot. On the highway a 4x4 should have no problem getting 18mpg, and some people get 19-20 out of the 2wd's. Just don't want you to be disappointed. 13-15 is pretty much the average for any full size V-8 SUV. My Z71 doesn't see the highway much at all, I seem to average 14mpg pretty consistently. It will hit 18+ but it has to be almost a 100% highway tank. I used to frequent GM-Trucks.com and there was a lot of satisfied people there with the waitforme tunes. __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! Last edited by 67ChevyRedneck; 01-05-2010 at 03:03 PM.

01-11-2010, 10:17 PM	#3
Eddie H. Registered User Join Date: Mar 2001 Location: Paradise TX USA Posts: 1,200	Re: 99 Tahoe Programmer for MPG?? My 99 Yukon is a 4X4 with 3:73 gears. It gets 12-14 in town and 17-18 HWY. It would probably do a little better than that if my right foot were a little lighter. I tried the K&N air intake, throttle body spacer, etc. No noticable improvement in MPG over stock. There's really not much you can do to improve mileage in a full size v8 powered SUV with the aerodynamics of a small barn. __________________ "Negative people always seem to have a problem for every solution"

01-15-2010, 05:20 AM	#4
Manbearpig Registered User Join Date: Mar 2009 Location: Midland, Tx Posts: 418	Re: 99 Tahoe Programmer for MPG?? http://www.blackbearperformance.com/ Give them a call You can get the best mileage results from a custom tuned PCM over a programmer __________________ 1972 GMC C10 Last edited by Manbearpig; 01-15-2010 at 05:21 AM.

01-15-2010, 12:20 PM	#5
jayharrell Gettin By on Gettin By Join Date: Jan 2008 Location: Cedar Creek, Tx Posts: 1,033	Re: 99 Tahoe Programmer for MPG?? I've been reading alot on that blackbear on gmtrucks.com. Well good. Tax return is on the way, looks like i might gather a 98 2wd 4door in the next week or so. Thanks guy. __________________ 69 CST10 LWB 455 Buick 00 S10 2.2 Vin5 76 GL1000 Naked 1bl VW carb "Adios to all the concrete; Gonna get me some dirt road back streets"



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