Post your Suburban MPG and what you've done to improve it!
 

I saw a forum post response where a user claimed to get 28.5 mpg on their Suburban (here here). It gave me the idea to see what everybody is getting in their Suburban and what they've done to achieve that shiny MPG number.

If you've modded for MPG (chip, injectors, HO, etc.) Please show off your Suburban MPG mods and what MPG you're getting! Let's see some information / links / and even pictures! As a soon-to-be new owner, I'd love to see what people are doing for MPG and to possibly replicate it.

Thxxxxx!

16-17 MPG HWY

15 Around Town

Just purchased an '06 2500 LT with the 6.0L:
First tank 11.6 mpg with no mods. It will be interesting to see what you all have done to bring your beasts to bay at the pumps.

Welcome to the forum.

I assume that's in town driving. What is your highway mileage at 65 mph?

I call major BS at 28.5. Only way to get 28.5 in any Burb is driving down from the summit of Pikes Peak, with a tail wind, transmission in neutral.

My 08 2500 gets ~15 on the highway, ~12 around down. But, then again, I drive it like I stole it.

Pulled the travel trailer down to AL over New Year's. Had a few tankfuls where she got about 6.5 MPG.

Just got the Blackbear EFI tuner. Gonna hafta see what that thing does for me.

2007 LTZ 6.0L

owned since new, no mods

ALWAYS, ALWAYS get around 11mpg around town...15-17 highway, highway driving trying for steady 60-65mph...

Truck has been from NY to Fla and from NY to VT several times, have been as lucky to get around 18.5 steady 70-75mph on the way to Fla, little less to VT(hills and mountains and all)....

2009 Suburban 15.6mpg average. K&N filter, and just been using Royal Purple since I have owned it.

2013 suburban 1500 series about 18-20mpg hwy. 14 city

35psi tire pressure michlein ltx ms2 tires 20 inch rims
very good alignment

2008 Burb LTZ 4x4, 5.3L

Just went from Wisconsin to California, 5000 miles total. My average was 15.5 going 75mph with 4 people and luggage pulling a small Jet Ski trailer.

Last August I took a trip around Lake Michigan, 2500 miles total. I had an average of 16.8, with only me, camping gear, and the same single jet ski trailer. I probably averaged 60-65mph on that trip.

All computed using the DIC.

1999 Suburban, 216k, 4x4
12-14 City, 18 MPG highway, stock.

Figured I would chime in being as I'm the only reply so far with a gen 1 sbc.