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  #1  
Old 01-23-2014, 07:57 PM
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Default Chevy tahoe low miles per gallon

I have a 2001 chevy tahoe 5.3 4x4, and just did a motor/tranny swap that had 60k on it. My truck is getting around 8 to 10 miles per gallon highway how can I improve this. I drive 60 miles a day and 50 of them are highway. I'm spending $20 a day on gas. I will be putting a big system in soon and a few alts and don't want to go to 4 miles per gallon lol. All tahoe owners is this mpg normal?
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Old 01-23-2014, 08:03 PM
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is it a bone stock 5.3 ?
id say its normal if you have 4.56 gears in it, an 38's
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Old 01-23-2014, 08:10 PM
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Originally Posted by 916slapin View Post
I have a 2001 chevy tahoe 5.3 4x4, and just did a motor/tranny swap that had 60k on it. My truck is getting around 8 to 10 miles per gallon highway how can I improve this. I drive 60 miles a day and 50 of them are highway. I'm spending $20 a day on gas. I will be putting a big system in soon and a few alts and don't want to go to 4 miles per gallon lol. All tahoe owners is this mpg normal?
i get about that with all my gear in. weighing in ~9000lbs. but mechanically i went theu everything before walling. knew the added stress needed that first
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Old 01-23-2014, 08:17 PM
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Yea bone stock with what ever the stock gears are. I was thinking I would get the milage I'm getting now once I put in the 6 15s and 3 to 4 alts with all the batts. I also have 24" wheels and I'm lowered.
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Old 01-23-2014, 08:21 PM
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Yea bone stock with what ever the stock gears are. I was thinking I would get the milage I'm getting now once I put in the 6 15s and 3 to 4 alts with all the batts. I also have 24" wheels and I'm lowered.
ya ive got all equip in my sig and 26's on and can still pull 10 plus on highway
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Old 01-23-2014, 08:21 PM
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idk man thats crazy. i have a 02 tahoe with 5.3 and cold air intake with 24 rims and big system (4 18's) and dual alts and on the highway i can go 300miles on 20 gallons thats 15mpg. i get like 10-12mpg in the city. i also bang hard everywhere i go.
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Old 01-23-2014, 08:29 PM
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I get 9-10 city and 15 highway but that's becuase I have 198k miles. I talked to a local tuner and he has a built avalanche with every mod that usually kills mileage, and he gets 25mpg highway and almost 20 city. The stock tune is JUNK on these trucks. Do you have someone local who tunes/builds modern chevy's?
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Old 01-23-2014, 08:30 PM
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gettin 12 around my lil town without much weight as of yet but i drive hard lol. maybe a sensor is off or u need to blow out ya injectors?
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Old 01-23-2014, 08:34 PM
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mass air flow sensor, air filter. does it run good at least
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Old 01-23-2014, 08:37 PM
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HAH. my tahoe would get me way below 10mpg before i sold her recently. 1996 chevrolet tahoe, 221k miles, 4x4. 75% of the engine was OEM and the transmission was 100% OEM, til i sold her recently. owned by 2 gm mechanics and my father then me. i spent 500 a month on gas, i make 1500.... 33% straight to gas. that was 4 years of my life and a few tears later, and my first car was gone.... its tough but it was an angel of a vehicle. that aside, deal with the shit MPG its a great truck.
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i made an honest mistake. I apologize.
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