Jump to content

Best miles per gallon?

Birdwatcher62

Recommended Posts

Birdwatcher62 Enthusiast

Birdwatcher62

Posted
Posted

Curious what the average and best gas mileage you've gotten in your 2015-2018 silverado or sierrra 1500 crew cab is? Mine so far is pictured. It is a 2018 Sierra SLT Z71 4WD Crew with the the 5.2 liter V8 8-speed.

20180506_102444.jpg

  • Replies 35
  • Created
  • Last Reply
SWOYER Enthusiast

SWOYER

Posted
Posted

Im not even remotely close to that currently my best was like 17.  I have a hot foot probably, so it's normally 14

catpartsman Enthusiast

catpartsman

Posted
Posted

My best in 25 miles was 27.1, in 50 miles it was 26.5 and in 400 mikes it was 25.3. This was all with the factory tires and wheels along with 2” block in rear and 2.5” lift up front. Since installing the new tires and wheels, I’m not even close to these numbers. The best in 25 mikes now is 23.5.


Sent from my iPhone using Tapatalk

B R A D Enthusiast

B R A D

Posted
Posted

This is with me picking kids up from school daily and errand running, normally it's 18+6726397665a885ef74887b2d145eeea6.jpg

Sent from my SM-N950U using Tapatalk

grizz_wi Enthusiast

grizz_wi

Posted
Posted

14.8 is my lifetime aveage according to fuelly.indont know why it's so bad ,I drive nice to lol my 94 reg cab gets 13 but that has a thirsty 5.7

joejoe11 Enthusiast

joejoe11

Posted
Posted

Take this with a grain of salt because I have 17" wheels instead of 20" and I don't think the dealership re-calibrated my speedometer, but my 17 v6 on the road says it gets 29.9.  However, driving in town that son of a gun sticks around 12.6.  Errrrr.  I'll do some manual calculations and see what it really is soon.

Kendal Smart New Member

Kendal Smart

Posted
Posted

2016 Sierra 1500 SLT 2WD

 

I spend a lot of time getting over 25 MPG and I basically just drive the speed limit everywhere. Sometimes when I have to slow down for traffic or rain I get 30+. Best I ever averaged for 25 miles was 45.6 but it's cheating as I was coasting down a mountain in New Mexico. Secret is to always coast to stop. Drive like you have no brakes. I honestly floor it all the time and accelerate hard.

IMG_20180327_170213.jpg

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • asilverblazer
      Slate Electric Truck

      By asilverblazer · Posted

      I like the idea.  I would pick diesel if I had a choice. I need pictures though.
    • newdude
      Help purchasing a touch screen digitizer

      By newdude · Posted

      I've installed cheap eBay new aftermarket digitizers before.  They work.  Did a bunch of Cadillac CUE (aka Cadillac's MyLink) for someone years ago.  They all worked fine after the repair.    That number 22740886, that is a component part # for GM.  You can use it to search, but its not something that's obtainable at the dealer level.     So pretty much any of these will work - 2015 Colorado Digitizer for sale | eBay
    • asilverblazer
      give me some tips to make my truck look better

      By asilverblazer · Posted

      Black bumper and the later years Z-71 style color matched grille.
    • fondupot
      Exhaust heat while towing!

      By fondupot · Posted

      You can install tailpipes that direct the exhaust sideways vs the OEM one that goes straight back. There are several on the market, do you own research. HOWEVER, you need to make sure the Venturi vents are still intact, otherwise it will throw a engine code. There is a sensor somewhere that detects back pressure on the exhaust. And if it doesn't collect the correct metrics, it will throw the truck into limp mode. 
    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      "Teardown" is complete. Head surfaces are clean and ready, new intake is prepped and ready. Coolant drained and water pump is removed, radiator is removed, new hoses and pump are ready.   The replacement intake is also from a '95 (with I think 260k, the odometer said). Noticeably less pitting where it covers the rear coolant passages. I'm not sure if that's a tribute to more frequent use, more frequent coolant changes/upkeep, or if the intake was machined at some point. But it appears I found a good one.   My coolant hoses were original, and the lower hose still retained the factory spring inside. It's not really rusty, but it's got deposits all over it. Unsure if I should re-install it (will thoroughly clean it first). Someone said hose technology has gotten better since 1995 (has it?) and I don't need the spring. I think modern EPDM is what made those hoses last from 1995-2026, so it's a question of how much suction can the water pump really pull, and will it collapse the hose without a spring?   I'm stopped and waiting for parts, however.   When I first brought the truck home, the fan was intermittently hitting the radiator shroud. I could see someone had monkeyed with the shroud (put a bunch of cardboard as a spacer between the upper/lower shroud halves. Someone said the motor mounts have likely failed and the engine has sagged. I wasn't sure I believed that. The engine is really solid in its mounts: To remove the old intake I *just* nearly permanently welded to the heads with freshly cured RTV and gasket snot two weeks ago, I literally had to use the arms on my lift and a chain with a bolt attached to the intake to pull it loose. It almost picked the front of the truck off the ground before ....scuuuuuuuuuuup.... I could actually hear the gaskets tearing and it broke loose and the whole truck settled back down. Motor barely moved.   SO, those parts I'm waiting on... The lower radiator mounts/bushings had completely failed. The radiator needs to be insulated from the rad support, and the bushings help the rad stand at the correct height. The plastic "baffle" was also destroyed at some point. Someone had attached the shroud to it incorrectly, overlapping a joint that should have been underlapped, creating another suspect issue potentially causing things to hit the fan. Broken tabs, side is busted off, and it's perma-formed/bent where it was jimmied incorrectly.   The baffle? Unobtainum. Long since discontinued from GM, of course. Aftermarket/capa/chinese? Also unobtanium. In GM's infinite wisdom, it appears there are at least two different variations whether the Blazer is 2 or 4 door, and I can't yet tell if they shared the same part with the S-pickups. Plan B, if I can't find a viable used one, will be to create a bracket to re-assemble the critical joint I need to seal a gap with the shroud. But that will bug me, it won't be...perfect.   The water pump bolts appear to have been installed with...plumber's putty. I guess, sure, if it works...? I've found a few "backyard fixes" like that. Someone's been here before....   If I can't find someone to jam bamboo under my fingernails to fill my free time this week I think I'll install the driver's power window motor and replace the rear door speaker that's inop. I've got a genuine GM "9.5" ohm working replacement. Why GM used a non-standard resistance....nevermind. Of course they did, you can get more sound from a cheap factory amp that way.   And the saga goes on...

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...