Jump to content

New gears installed now I have other issues.

PR mudder

Recommended Posts

PR mudder Enthusiast

PR mudder

Posted
Posted

So I finally got the new 4:56 gears installed on my 07 Silverado and after I took the truck for ride I noticed that the speedometer was off by about 7 to 10 miles and 2 lights came on in the dash the brake light and the ABS light come on after about 5 minutes of driving I was told that a hand held tuner will fixed all this issues but I just really don't know if this is true and if it is true which one of this tuners should I get, by the way thank you everyone for all the advise that you guys gave me in the other topic I started about gears I when ahead with the 4:56's and wow what a huge improvement my gas mileage when from [a miserable 6 miles per gallon back to 15 miles per gallon and the power is back to the wheels and glad I listen to you guys!

 

 

 

 

post-113248-0-96548900-1336454012_thumb.jpg

post-113248-0-96548900-1336454012_thumb.jpg

post-113248-0-96548900-1336454012_thumb.jpg

post-113248-0-96548900-1336454012_thumb.jpg

  • Replies 36
  • Created
  • Last Reply
iminaquagmire Enthusiast

iminaquagmire

Posted
Posted

The ABS is a computer issue. There is no GM calibration for 4.56 gears so the computer sees different wheel speeds and trips the sensors. Even after having Justin at Blackbear tune mine for the 4.56 gears, my ABS light still comes on above 45mph. There is nothing wrong and ABS still works fine, its just a calibration issue. You definitely need to get your computers flashed.

txab Senior Enthusiast

txab

Posted
Posted

Get a Black Bear custom tune. Right now your odometer is off as well so figuring your MPG is still off

blackout07 Senior Enthusiast

blackout07

Posted
Posted

As stated, get a custom tune. I'm running 4.88's with a custom tune from DiabloSport and I'm on the money. I have no warning lights at all either. Although, I would prefer to use Black Bear.

MorrisGray Enthusiast

MorrisGray

Posted
Posted

How could you possibly get better fuel mileage with 4.56 or 4.88 gears?

00Silverado4x4 Senior Enthusiast

00Silverado4x4

Posted
Posted

How could you possibly get better fuel mileage with 4.56 or 4.88 gears?

 

Since taller tires effectively change your final ratio, it takes more torque from your engine to turn taller tires (w/ stock gears) So you install lower gears in for the torque multiplier and regain the necessary power to turn the tires without drawing additional torque from engine.

iminaquagmire Enthusiast

iminaquagmire

Posted
Posted

Or you're like me and drive most of the time in the city. Taking off from stops constantly getting into the gas was made a little easier (and a little more fun) by my 4.56 gears. I run 33" tires but because of the city driving, they still are a good swap. I would have preferred the 4.30 that is now out but nevertheless, big tires and a lift aren't always the reason to switch your gears,

Silverado4x4 Senior Enthusiast

Silverado4x4

Posted
Posted

No way you more then doubled your fuel mileage, how are you getting the numbers with the speedometer off by that much? If your speedometer is off then so is your odometer so your figures are way off.

  • 2 weeks later...
redkaz04 Enthusiast

redkaz04

Posted
Posted

So I finally got the new 4:56 gears installed on my 07 Silverado and after I took the truck for ride I noticed that the speedometer was off by about 7 to 10 miles and 2 lights came on in the dash the brake light and the ABS light come on after about 5 minutes of driving I was told that a hand held tuner will fixed all this issues but I just really don't know if this is true and if it is true which one of this tuners should I get, by the way thank you everyone for all the advise that you guys gave me in the other topic I started about gears I when ahead with the 4:56's and wow what a huge improvement my gas mileage when from [a miserable 6 miles per gallon back to 15 miles per gallon and the power is back to the wheels and glad I listen to you guys!

 

 

 

 

post-113248-0-96548900-1336454012_thumb.jpg

 

 

I get my truck back saturday...went with 4:56s too....I hope I don't get the dreaded light problems..I am getting mine tuned at the shop with a superchip tuner...we'll see

redkaz04 Enthusiast

redkaz04

Posted
Posted

The ABS is a computer issue. There is no GM calibration for 4.56 gears so the computer sees different wheel speeds and trips the sensors. Even after having Justin at Blackbear tune mine for the 4.56 gears, my ABS light still comes on above 45mph. There is nothing wrong and ABS still works fine, its just a calibration issue. You definitely need to get your computers flashed.

 

 

you except that the abs light will always be on over 45mph??? That's annoying as crap. They couldn't fix it?

redkaz04 Enthusiast

redkaz04

Posted
Posted

UPDATE OP??

 

I just picked up my truck yesterday.....G2 gears are great, nice and quiet too. HOWEVER, I had a superchip tune and the abs light still comes on after about 5 mins of driving. I messed with the tire size and can get the light to stay off for more than about 10 miles. The software simply doesn't work. WTH. Calling the shop that did the install tomorrow.

 

Blackout: does you diablo trip your abs light?

Archived

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

Go to topic listing

  • Latest Articles

  • Posts

    • Chuck FB
      Gas Prices

      By Chuck FB · Posted

      Interesting, I suspect I would have fueled up in Lee Vining as the day prior I would have filled up either in Laughlin or near there and maybe again before I entered Death Valley and once out the other side late that evening as I kept on driving into the night up near Lee Vining. Next morning I most likely fueled up in LV before heading over Tioga Pass into ( as I refer to it as "Yose .... Mite" 😁 ). And again that was 19 years ago but the price then must not have jumped out at me like the 5 bill a gallon theme of nutty cult hippy country Big Sir or head so far up their rear Aspen. I'd be curious to know where the highest prices are in the lower 48, I probably would not be far off to guess somewhere in Cali forn ie. Coldfoot and Prudhoe bay may have those prices beat but that is a whole other world up there and when prices are more normal elsewhere that is about what they can be up there I believe in no mans land. Anyway interesting that the 395 corridor is hosing people and the thing is, its tourist season and its not like there are a lot of competition options when driving up that highway from what I could see. Yup, big ole Boaterhomes and various other RV's ahead and behind me at the Yosemite entrance gate and they have to get their fuel somewhere.  
    • Atlas
      Gas Prices

      By Atlas · Posted

      Those can be high, as well as the big California cities. The ones that will pop your eyes out are the 395 corridor on the Eastern side of the Sierra Nevadas. Lee Vining, $7.19 for regular and $8.89 for diesel is what the Google said right now.
    • newdude
      2020 Trailboss 6.2 replacement

      By newdude · Posted

      Correct.  2019-2021 model years are serviced by a different p/n.  19420611.  Recall 2021s use 19420611.   The recall engines 2022-2024 model years are serviced with 12740076.     The difference between 19420611 and 12740076 is GM changed injector size for 2022.  The injectors are smaller on 12740076 with smaller injector bores in the cylinder heads to match the smaller injectors.  So you can't install a 19420611 in a 2022-2024, and you can't install a 12740076 in a 2019-2021.     Both engines are the replacement engine p/ns that are in the L87 recall.  So both of these are the updated engines.     Here's a version of the L87 recall with the p/ns for all the parts needed.    RCRIT-25V274-7075.pdf   Note it shows 19420611 and 12740076 with an asterisk to a footnote "Use the VIN and the GM Electronic Parts Catalog (EPC) to determine which part to order if two or more part numbers are listed for the same part, as it may vary by vehicle options."    
    • 2017Z
      2020 Trailboss 6.2 replacement

      By 2017Z · Posted

      Looking for advice from this group. Took my flawless 2020 6.2 TB to an unnamed shop for routine rear brakes and oil change. Tech forgot to put oil back in after the full service and needles to say, destroyed my engine.  It’s all on their shop video so they are responsible.   I had my Chevy dealer do the analysis and they confirmed its compromised and said engine replacement. The manager said they only get GM reman engines from GM with full 3 yr warranty and the one they would put in is not same as what’s they are swapping out on 21-25 for recall.    I am looking for advice why that would be a different engine because obviously I had the good 6.2 year and replacing it has my concerns with that recall for 21-15   Also what’s the pros and cons of accepting the engine swap vs telling the shop that bricked the truck to pay up so I buy a new truck. I’m concerned about stigma resale eventually if I just decide to get rid of it after the swap or other issues showing up after the swap out.  
    • GN2018
      AFM Disabler Question

      By GN2018 · Posted

      Just looked up my records.  I've never gone over 5000 miles between oil changes.  At 46K miles, I have 10 oil changes.  I hope that will help.  I also installed the disabler last year.  I've still had a few times when it didn't seem to engage (which I can tell because the start stop feature kicks in), but for the most part, I think it's working.  For some reason, GM did not include the number of cylinders running in the information screen like I had on other models.  In my Cadillac, it shows me when it's running on 4 cylinders on the fuel milage screen.  I can't find that on my '21 Denali.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...