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Chevrolet TrailBlazer Real World MPG

44 messages,  Last post on Sep 08, 2009 at 10:42 AM

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What is this discussion about? Chevrolet TrailBlazer, Chevrolet TrailBlazer EXT, Fuel Efficiency (MPG), SUV

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#25 of 44 Re: tire selection vs. mpg [73shark] by jwoodie Oct 26, 2006 (3:24 pm)
Replying to: 73shark (Jun 24, 2006 9:25 am) Well, I sprang for the Fortera Tripletreds ($150 each!). They look and handle great, suprisingly quiet & smooth considering their aggressive tread design. Haven't checked new mileage or snow performance, but will report back. P.S. GM factory recommended 30 front 35 rear psi (EXT)seems to be correct for maximum wear pattern.
#26 of 44 Re: My TB is in shop alot and now out of Warranty! [cookiemom] by jwoodie Oct 26, 2006 (3:32 pm)
Replying to: cookiemom (Mar 04, 2006 5:10 am) I have the same problem (hot dash) especially during long haul up hill. May also affect erratic temp modulation from auto a/c. I wonder of this problem is more frequent with the V8 EXT? Am considering putting some insulation between engine & firewall. Any thoughts/suggstions?
#27 of 44 '02 4WD TB and '06 2WD SS Mileage by graboske Dec 02, 2006 (6:48 am)
I have an '02 4WD with 4.10 gears, and get 16 in mixed driving, and 22 on the highway at 75 mpg. Mileage with a 6,000 pound trailer is in the 12-14 mpg range. I also have a '06 2WD SS. It gets as low as 13 mpg in the city, and up to 18 on the highway driven conservatively. It's more fun to get 13
#28 of 44 I6 vs V8 by tshields1 Dec 02, 2006 (6:18 pm)
Looking to but TB ext, was told to get the V8 because of the extra weight, wont do any towing b/c I have truck as well. Any pros or cons on engine selection?
#29 of 44 02 LS 2wd mileage by lablover2 Apr 19, 2007 (2:57 pm)
i average about 17 mpg with a mix of driving.i still love my trailblazer with 62,600 miles on her! i just replaced my original bfg tires and could have probably waited awhile. my nephews wife also has a tb and she put on over 90000 miles before she replaced her tires.
#30 of 44 '05 TB EXT 2WD 6 cyl MPG by jwiseman Sep 01, 2007 (7:29 pm)
I was really disappointed in the MPG I'm getting. I keep really detailed records on my cars. My wife mostly drives the TB (50 miles round trip to work, all highway). She routinely gets only about 16MPG. On a long road trip it might climb to 18MPG.
#31 of 44 Mileage Chips recommendations for 2003 TB by larry82 Nov 04, 2007 (4:24 pm)
Anybody have any computer chip recommendations to boost MPG for an 2003 Trailblazer? We do a mix of city/hwy driving and occassional light towing. We currently get about 17-20 on our 4.3L, straight 6, would like to improve those numbers. Thanks Replies to this message: tblazed (Nov 05, 2007 7:00 am) hineblazer (Mar 23, 2009 11:38 am)
#32 of 44 Re: Mileage Chips recommendations for 2003 TB [larry82] by tblazed Nov 05, 2007 (7:00 am)
Replying to: larry82 (Nov 04, 2007 4:24 pm) I have two reprogrammed PCMs for mine now from two different PCM reprogram companies. Each programmer made claims of anywhere from 2 to 5 MPG improvement. I think they left off the decimal point! Maybe .2 to .5 MPG if any improvement at all! Claims of improved gas mileage did not materialize, although the throttle response and shift quality are much improved over stock. I think it was worthwhile for those improvements. Do not expect miracles improving the MPG.   Someone else said theirs gets about 13.5 in town, about 21 at 70-75 on the highway. That's very much inline with what I have always seen, stock or "tuned". The best so far was all between 65 and 70 it got 23.5. I have the 3.42:1 gear ratio. That makes a difference too. Each step up in numerical gear ratio will make the highway MPG less. Choices were 3.42. 3.73. and 4.10.
#33 of 44 Any Clue why I'm getting 9mpg city Trailblazer I6? by vikesfan53 Jan 10, 2008 (10:20 am)
I just bought a dealer-driven 2007 Trailblazer which has a 4.3L I6. The sheet says mpg should be 15-21 but no matter what I do, I can't get any better than 9mpg in town. I have 85 miles on this tank of gas and I'm just a tad over 1/2 full!!! Has anyone heard of issues with these vehicles or engines? Any help I could get would be appreciated!! Replies to this message: lttlelgepres (Jan 10, 2008 8:47 pm) hineblazer (Jun 11, 2009 6:13 am)
#34 of 44 Re: Any Clue why I'm getting 9mpg city Trailblazer I6? [vikesfan53] by lttlelgepres Jan 10, 2008 (8:47 pm)
Replying to: vikesfan53 (Jan 10, 2008 10:20 am) I just bought a 2003 TB EXT with 70,000 miles on it. I filled up the tank and have used half a tank and only got 125 miles on that half tank. I have a 25 gallon tank because of the extended model. I am very dissapointed so far I was expecting between 15-17 mpg.   Any help would be apreciated.

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