Home Resources Forums Nationals Meets Store
10/31/14 08:10 PM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Welcome to the Chevy Avalanche Fan Club of North America

Become a Supporting Member

Visit the CAFCNA General Store

 
   Home   Help Search Login Register Bookmark  
Advertisement
Put your advertisement image here...


Advertisement
 
Pages: 1 [2] 3 4 5  All   Go Down
  Print  
Author Topic: Gas milage killing me. Any suggestion to Improve  (Read 45074 times)
0 Members and 1 Guest are viewing this topic.
MS03 2500
CAFCNA 2014 Supporting Member
Full Member
*
*
*
*
*
*
*
*
*
Offline Offline

Posts: 32,285


Awards
« Reply #25 on: 07/14/06 01:21 PM »

Another thing you may want to try, (I know everyone is going to said it doesn't matter) I assume you are not running the AC, drive without the back window in
I feel in mine it makes the truck more stable and I feel it makes the truck more aerodynamic and it's a lot cooler inside.

  This is my seat of the pants gut feel
Logged

2003 2500
ygmn
Administrator
Full Member
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
Offline Offline

Posts: 31,480


Insert Funny Text Here _______________ .


Awards
« Reply #26 on: 07/14/06 01:29 PM »

drive with out AC...  dead Bad idea

you have never been down south before...hehehe

you would melt without AC...hehehe
Logged

Thread Killer ... After I post they die?
2002 Pewter Z66 - Sept 2001
CAFCNA Album
LSU BABY!
YANKEES BABY!
SAINTS BABY!
FlaBouy
Full Member
******
Offline Offline

Posts: 5,937


Awards
« Reply #27 on: 07/14/06 01:39 PM »

NO A/C......  Shocked

Ban Him


hehe j/k

You know though.....GM did have a reason for making the rear glass removable.....
Logged
MS03 2500
CAFCNA 2014 Supporting Member
Full Member
*
*
*
*
*
*
*
*
*
Offline Offline

Posts: 32,285


Awards
« Reply #28 on: 07/14/06 01:48 PM »

I guess in Florida the rear glass thing may not be a good idea but maybe at night or early in the morning you may want to give it a try. I did it today but in Michigan
it's only 90 degrees and 64% humidity
Logged

2003 2500
green
New Member
*
Offline Offline

Posts: 8


Awards
« Reply #29 on: 07/14/06 02:09 PM »

Why have a slut. Should have bought a Work Truck if you want to ride around with windows down.
Logged

05 Bermuda Blue LT Z-71 Loaded, Mannik SS grille guard
FlaBouy
Full Member
******
Offline Offline

Posts: 5,937


Awards
« Reply #30 on: 07/14/06 02:11 PM »

Why have a slut. Should have bought a Work Truck if you want to ride around with windows down.



Ouch..... Shocked

I think I am going to like this guy.......
Logged
EricB
Full Member
******
Offline Offline

Posts: 4,379


Baseball time!


Awards
« Reply #31 on: 07/20/06 11:49 AM »

If you like the without rear window idea, I'm working on a screen that can't be cut with a knife to go in there!  I'll post some pics when I get it done.  Should be in the next week or two.
Logged
DanGTO
CAFCNA 2014 Premium Member
Full Member
*
Offline Offline

Posts: 309

Detroit


Awards
« Reply #32 on: 07/31/06 03:01 PM »

Another thing you may want to try, (I know everyone is going to said it doesn't matter) I assume you are not running the AC, drive without the back window in
I feel in mine it makes the truck more stable and I feel it makes the truck more aerodynamic and it's a lot cooler inside.

  This is my seat of the pants gut feel

Back window out is nice, if you go down the highway etc.  City, too much of a hassle, especially in Southfield  Tongue

I am in Southfield now.  Black 02 + ambers.. Wave
Logged

Dan
Av: 2013 FGM Black Diamond Z71 & *SOLD*Modified 2002 Z71...miss it daily
1971 Pontiac LeMans Hardtop GT-37 clone
2007 Pontiac Grand Prix GXP - Stock
2009 Pontiac G8 GXP SBM - Modified
2009 Saab 9-3 2.0T Sportcombi - Stock
1988 Volvo 740 Turbo - Modified
black jack 05
Full Member
***
Offline Offline

Posts: 156



Awards
« Reply #33 on: 08/01/06 06:49 PM »

well on my 02 i got 20 mpg highway now thats with afe intake, throttle body spacer  bosch pat plus 4 plugs and corsa cat back and with ac off.  now on my 05 ive been getting 19mpg highway and with afe intake tire psi at 40 and ac off. i drive the speed limit. now the only other dif between the two besides mods is rear 02 has 375 and 05 has 3:42 . now i know all you are asking florida and not running ac , well i leave for work at 6am cool outside and run the fan with reci on and come home at night.
Logged

2002 chevy av z71, cladded , mods corsa cat back ,throttle body spacer, afe intake, edelbrock shocks traded in july 06                                                 2005 chevy av z71 lt, cladded , afe intake                2005 pontiac gto slp lt headers, corsa cat back, cs performance intake,m6
ygmn
Administrator
Full Member
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
Offline Offline

Posts: 31,480


Insert Funny Text Here _______________ .


Awards
« Reply #34 on: 08/02/06 03:27 AM »

Still hot out any time of day & humid too..

AC baby is more then worth loss in MPG...for me
Logged

Thread Killer ... After I post they die?
2002 Pewter Z66 - Sept 2001
CAFCNA Album
LSU BABY!
YANKEES BABY!
SAINTS BABY!
ak_abes
CAFCNA 2008 Supporting Member
Full Member
*
*
*
*
Offline Offline

Posts: 118


Me--Germany; Av--TX


Awards
« Reply #35 on: 08/07/06 06:43 PM »

now i know all you are asking florida and not running ac , well i leave for work at 6am cool outside and run the fan with reci on and come home at night.


On the '05 doesn't the A/C come on with the recirc?  I thought I read that in the manual.

I have an '05 with CAI, performance muffler (AT3030), stock small rear end.  I have a 12mi commute, mostly highway 70 mph.  Average 17.5 with A/c on.
« Last Edit: 08/07/06 06:46 PM by aknut1 » Logged

'05 SBM WBH:  Amber DRL, ventvisors, hood deflector, mac intake, westin oval steps, AT 3030 exhaust, sail panel lights, chrome tail lights, coachworks billet grill, Halo Projector Headlights, Escalade Chrome Handles, American Racing Remx Rims
O_Baterisssta
Full Member
***
Offline Offline

Posts: 31


Drummers are better bangers


Awards
« Reply #36 on: 11/13/06 06:51 AM »

I have an 06 WBH 2wd. Intake and flowmaster 40 dual exhaust are my only mods so far. It kinda depends on where you live also. I live in a 'suburb' of Los Angeles, and it's kinda hilly I guess. I get about 17-18mpg both highway and city. I drove to Vegas between 75-80mph and got about 19-20mpg. I'm not really heavy on the pedal, only if I want to be  or if a cute girl is stopped right next to me.
Logged

"Well, that's just like, your opinion...man."
cadboy1
CAFCNA 2010 Supporting Member
Full Member
*
*
*
*
*
*
*
*
Offline Offline

Posts: 5,807



Awards
« Reply #37 on: 11/13/06 05:59 PM »

Maybe the gas mileage finally killed him..He never posted again Huh
Logged

04 AV 2500
01 Olds Aurora 4.0
07 Trailblazer SS AWD
GPM1972
CAFCNA 2003 Supporting Member
Full Member
*
Offline Offline

Posts: 266


Awards
« Reply #38 on: 11/13/06 09:49 PM »

I've got an 02 Z71 with 4.10s.   I've got nearly 80,000 miles on the clock,  About 10,000 miles ago I switched from Penzoil 5W30 to Mobil 1 5W30 and picked up an overall average of 2 mpg.  Most notable on the interstate where I've gone from less than 16 mpg @ avg. 80 mpg to over 19 mpg.
Logged
StanW
Member
**
Offline Offline

Posts: 12

I love the Chevy Avalanche!


Awards
« Reply #39 on: 11/15/06 12:54 PM »

You might also want to change the oil to synthetic. I put in Mobil One 5W30 and went from 14.5 to 16 MPG. Not much improvement considering the cost of synthetic, but every little bit helps

Hope this helps.
Logged
AVLT05
Member
**
Offline Offline

Posts: 18

I love the Chevy Avalanche


Awards
« Reply #40 on: 11/26/06 05:51 AM »


 I noticed a 1 to 1.5 mpg increase when I switched to Mobil 1 as well.
Logged
Norcal
New Member
*
Offline Offline

Posts: 5

I love the Chevy Avalanche


Awards
« Reply #41 on: 12/20/06 03:18 PM »

Buy  an H2 - and you will really appreciate the AVs gas mileage... Seriously - I'm getting about 18MPG on average. 2006 LT 4x4... Suggest Tru Flow intake, and Corsa sport Exhaust. I also tuned mine with the plug in tuner - set to extract mileage and change tranny shift points. Tow/Haul overides back to stock. Goes faster - sounds bad ass...
Good Luck!
Logged
AlpineNInfinity
Full Member
***
Offline Offline

Posts: 56

I love the Chevy Avalanche


Awards
« Reply #42 on: 12/23/06 12:24 PM »

1500 av Z-71 with 4.10 gears. Still stock other than grille guard and F Keys. Averages 12.5 miles per gallon all around. Can get 15 while on hi way. Gas prices going up, love my truck but cost too much to drive. Any suggestions to improve fuel econ without messing up warranty? Is 12.5 a good average with this setup?

Get a civic.
Logged
StClairDean
Member
**
Offline Offline

Posts: 15


I love the Chevy Avalanche


Awards
« Reply #43 on: 04/24/07 08:02 AM »

Firstly, this is an awesome forum and a very valuable resource. 

About 2 months ago, I picked up my 04 Av (5.3, 410) and about 23k miles.  I have been watching closely the fuel mileage and am getting somewhat discouraged.  Obviously, as the vehicle is relatively new to me, I don't really have much data to go on, but my average is about 11 mpg.  And believe me, I baby my Av.  Mostly city driving which I know kills mpg.  If I can't squeeze any more mileage out, I will definately be looking at mods or a tune.  Perhaps it's buyer's ignorance, but the last Chevy trucks I had (1990, 350 3/4 ton and a 2001 5.3 1/2 ton) both averaged 17-19 mpg.  With the newer Av (improved technology), I expected the mileage to be somewhat similar.  I was obviously mistaken.

Cheers


Logged

2004 Avalanche, 5.3l, 4.10
20" RPM Wheels 275-55-R20 Falkens
MyBigToy
Full Member
******
Offline Offline

Posts: 2,825


Too much power is just enough!


Awards
« Reply #44 on: 04/24/07 10:36 AM »

The worst I've done is 12.4 and the best I've done is 17.5. I average about 15 and don't think that's too bad considering what I'm driving.

I'm sorry but if you are concerned about gas mileage you shouldn't be driving a big-a$$ed truck.
Logged

2002 LPM Z71 - Magnacharger w/3" pulley, TOG's headers, 216/224-.551/.551-115 cam/pushrods/dual springs/titanium retainers, built tranny, Yank TT2600 converter, 24K GVW Tru-Cool tranny cooler, Flex-A-Lites, ProCold intake, MSD wires & TR6 plugs, 20" Panther Juice 6's, 2.8" rear lowering springs, J&J Enterprises stainless grille, body-color taillight covers, custom metal rear step bumper. Self-tuned with HP Tuners software.

Daily driver: 2013 Subaru Outback Limited 2.5i w/Special Appearance Pkg
cooldoctor1
Full Member
***
Offline Offline

Posts: 26



Awards
« Reply #45 on: 10/20/07 05:26 AM »

 Cheesy

My wife drives a 2007 short (not ext) GMC Yukon and gets 15 mpg average, and we live in flat midwest with mostly open (highway-like) driving.  She has a Vortec 6.2 L stock GM engine (larger due to Denali). 

I am readying to purchase a 2007 Av AWD  5.3 L and during a prolonged test drive, noticed the famous V4-V8 engine (forget what it's called) really, as others have said, does not go to V4 unless I am totally with foot off pedal.  On flat highway, still V8.  Question why, like the 4WD, I cannot simply dial it down to V4 at my discretion.  THAT would save some petrol.

Interesting thread.
Logged
SilverGhost
CAFCNA 2007 Supporting Member
Full Member
*
Offline Offline

Posts: 376


Got Sand!


WWW Awards
« Reply #46 on: 10/22/07 10:29 AM »

I commute 120 miles/day and can drive 25% of it in V4 mode.  I average 45 mph, so there is a fair share of city driving and I am getting 17-19.  I do not believe in the slow and easy starts.  I have tried that and I seem to get worse mileage.  I stomp on it and get up to 45-50 (usually in 2nd), back off and kick in the cruise around 60.   On the highway (10 miles) I set the cruise at 70.  On the hilly sections I sometimes turn off the cruise to try to stay in V4 mode.  I have also experimented with and w/o the AC it costs me on average 2mpg.  I also try to minimize the amount of time I run the defroster.  With all that being said when my wife drives the AV for her commute she gets 15-17 with less city driving.  I really think it boils down to driving style, how close do you follow the vehicle in front of you.  I run my tires at 38psi, 3.73 gears, 63 Series K&N and a Flowmaster 50 DeltaFlow. 

I did read a post by GMResearch where they are thinking of putting in a low, medium and high V4 mode selector, in the future.
Logged

2007 Silver Birch  MODS - FM 50, 63  K&N CAI, Skid Plates, All 6 on Hi, HP Tuner & NGK AFX WB, 5100  Bilsteins on all corners, Train Horns, EBC slotted rotors and 6000 GreenStuff pads, Warn Trans4mer grill guard, .

Old - 2002 Summit White - North Face Edition
otisroundtree
New Member
*
Offline Offline

Posts: 2

I love the Chevy Avalanche


Awards
« Reply #47 on: 01/10/08 03:48 PM »

I don't think it's practical to drive an SUV or truck and worry about the gas mileage, you probably should by an econo car if gas mileage is your main concern.  I say step on it!
Logged
MS03 2500
CAFCNA 2014 Supporting Member
Full Member
*
*
*
*
*
*
*
*
*
Offline Offline

Posts: 32,285


Awards
« Reply #48 on: 01/10/08 04:38 PM »

Congrat's  on the first post otisroundtree, very well put

Welcome! to the club 
Logged

2003 2500
kcole683
Full Member
***
Offline Offline

Posts: 130

I love the Chevy Avalanche!


Awards
« Reply #49 on: 01/10/08 06:02 PM »

People always told me if you're worried about the gas mileage then you can't afford the truck. .. .... .
....................................

Obviously I can't afford my truck !!!! banghead banghead

I have a cure though it's a 17 year old beat up work car that gets twice the fuel mileage. 
Logged

INDIGO BLUE Z71 BORN 03-14-02 DELIVERED ON 04-27-02  HEATED LEATHER,ONSTAR,CLIMATECONTROL ,SUNROOF, LOADED WITH EVERYTHING ,NO BLOCK HEATER,I LOVE THIS TRUCK New toy 2005 Stingray 220 CS in tow on a Prestige Trailer.
Pages: 1 [2] 3 4 5  All   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2011, Simple Machines Valid XHTML 1.0! Valid CSS!
Page created in 0.082 seconds with 26 queries.
Official SEMA Member ChevyAvalancheFanClub website are the rightful owners as indicated in the ALT TXT tags provided.  Chevrolet, Chevy, Avalanche, PRO-TEC, PASSlock, Midgate, the Chevrolet bowtie logo, Avalanche logo, and their images are registered trademarks of the General Motors Corporation and are used with kind permission as approved by Chevrolet Public Relations, Chevrolet Brand Management, and the Chevrolet Legal Department (thanks Chevrolet!).  OnStar and it's logo are the property of OnStar.  XM, XM Radio, and the XM logo are property of XM Radio.  I'm just a little guy so don't even think about suing me.  It's recommended you read the Privacy Policy and Terms of Use of this website.  The Chevrolet Avalanche Fan Club of North America is a proud member of SEMA, the Specialty Equipment Market Association.  All content appearing on this is protected under international copyright , 2002 to 2008, All Rights Reserved