Question about GMC Sierra 1500

1 Answer

I have a 2006 GMC Sierra pickup. Since I started using E85 gas, mileage has dropped drastically. Can you tell me if I need to ues a different type of spark plug? Thanks, Will

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,654 Answers

These trucks with the flex fuel systems will not get as good of milage on E85. They are designed this way. I haven't heard of any kind of spark plug that will help you in this. It is kind of a trade off, better milage but gas is more expensive, E85 is cheaper and more enviromently freindly but gas milage suffers. I also have a 2006 Chevy but did not get the flex fuel for this reason. On my car I use it and the milage suffers a little but with the trucks you will see even less milage due to the fact that trucks get worse milage than cars to begin with.

Posted on Nov 15, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How to change a fuel pump on a 2006 gmc sierra pickup


Discharge fuel pressure by removing the fuel pump fuse and starting engine until it dies. Drop fuel tank low enough to disconnect fuel and vapor lines. Lower the fuel tank all the way and remove locking ring from fuel pump module. Lift out the module and replace with new. Reverse to re-install. This is NOT a diy job.

Oct 23, 2017 | GMC Cars & Trucks

1 Answer

Drastic drop in gas mileage


Sounds like the dealer's mechanic may have accidentally dislodged a hose or two.. take it back and tell them everything that has happened...MAKE SURE the boss there understands the 22% milage drop and the GASOLINE LEAK didn't start until THEY worked on it!!!

Jun 06, 2017 | 2011 Ford Fiesta

2 Answers

I used e85 gasoline instead of regular fuel. would that damage my car. It is a 2009 yaris


Dear Madam or Sir,

no, it will not damage your car but you will encounter problems with starting from cold temperatures and a lack of power running your Yaris on E85 without an extra e85 control unit.

The reason is, that the fuel management system of your car can´t compensate the different properties of E85.
But no worries.
I suggest to refuel with regular petrol when your tank gauge has reached 50 % , you should be fine with that.


Kind regards from Germany
AutoDoc P.

Jun 25, 2010 | 2009 Toyota Yaris

2 Answers

E85 Ethanol effects


E85 needs special fuel lines and and all rubber/plastic seals and o-rings must be replaced with versions which are E85 compliant. The ignition timing needs to be altered (easy) as does the ignition advance curve (likely difficult). You may also need a different grade of spark plug and possible changes to the carb jetting (very difficult to get right without access to a dynamometer equipped rolling road).

In short, unless you're having a major rebuild incorporating E85 from the outset and you're happy to experiment with various settings then avoid using E85 altogether as it can cause significant damage. On vehicles certified for use with E85 it's no problem at all.

May 28, 2010 | 1983 GMC C2500

1 Answer

Rear-end grinding noise in 1993 GMC Sierra 1500


your description sounds like the gears inside the the same differential you just replaced.

Oct 13, 2009 | 1993 GMC Sierra K1500

1 Answer

Check engine light is on for my 2006 GMC Sierra


sounds like a vaccum leak between you intake and your EGR

Aug 20, 2009 | 2006 GMC Sierra 1500 2WD

2 Answers

Poor gas mileage on my jeep liberty


change your spark plugs if they haven't been changed in awhile. check your tires for the propper psi there should be a sticker on the inside of your drivers door that will tell you recomended air pressures go by this not the recomendations on the tires. also where are you getting you gas does it contain ethanol sometimes this can burn faster.

Feb 05, 2009 | 2005 Jeep Wrangler

1 Answer

Drastic drop in gas mileage


well you may need to have it serviced even though your not too hard on it. try a complete tune up and see how the milage is affected

Nov 22, 2008 | 2005 Jeep Liberty

1 Answer

Gas mileage problems after trying the Tornado fuel saver.


You can cause the computer to re-boot by disconnecting the battery cables for a few minutes and then reconnect.

Nov 12, 2008 | 2006 GMC Sierra

9 Answers

E85 conversion kit for 2006 focus and 2007 4 cylinder Ranger?


A gasoline/ethanol mixture containing 85% ethanol and 15% gasoline. The number after the E is the percent of the mixture that is ethanol. So E10 is 10% ethanol and 90% gasoline. Ethanol, of course, is the type of alcohol in beer and fun drinks. Jeff

May 14, 2008 | 2006 Ford Focus

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

235 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

76848 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...