speedo issue

jacack · Jun 14, 2019

i posted this in the interior section also but thought maybe over here would be better .the other day I noticed my speedometer while stopped is way below the 0 , it moves like normal but now is way off, like 15 mph . Anyone ever see this before or know how to fix it? Not sure what happened as I am pretty sure it was working fine the day before.

I tried disconnecting the battery for a bit but same thing.

What holds it at 0?

Truck is a 2012 with 101k issue free miles .

Jared

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1BAD454SSv2 · Jun 14, 2019

Somebody on here had a issue with rpm gauge being off they had to pull the needle line it up to correct position and reinsert.

Boy that would get a me a ton of speeding tickets.

1BAD454SSv2 · Jun 14, 2019

IF you hold down the OK button on steering wheel then insert key and start engine gets you to engineering mode and there is a guage sweep section , try that.

Dane · Jun 14, 2019

So, I HAD the tach issue. I tried removing the needle and repositioning it - but it just went right back to the same spot. I don't like how I fixed it, but it worked. I had to simply move the needle to the right spot with the truck running. This was the tach, but I wager they work about the same.

Do it at your own risk, I tried a bunch of other things first such as engineer mode, leaving the battery disconnected, reapplying my tune, etc etc. Nada. This worked and it has been fine since. I was out of options.

jacack · Jun 14, 2019

1BAD454SSv2 said:
IF you hold down the OK button on steering wheel then insert key and start engine gets you to engineering mode and there is a guage sweep section , try that.

Just tried that, the speedo doesn’t do a full sweep, stops about the same distance it’s off

jacack · Jun 14, 2019

Dane said:
So, I HAD the tach issue. I tried removing the needle and repositioning it - but it just went right back to the same spot. I don't like how I fixed it, but it worked. I had to simply move the needle to the right spot with the truck running. This was the tach, but I wager they work about the same.

Do it at your own risk, I tried a bunch of other things first such as engineer mode, leaving the battery disconnected, reapplying my tune, etc etc. Nada. This worked and it has been fine since. I was out of options.

Does the clear cover come off? I got to where the 4 screws are holding the cluster in but how to you get to the needle?

Dane · Jun 14, 2019

jacack said:
Does the clear cover come off? I got to where the 4 screws are holding the cluster in but how to you get to the needle?

Yes, the clear cover comes off easily with a few screws. You don't have to pull the cluster out. It's a "don't overthink it" situation.

jacack · Jun 14, 2019

thanks, looks like that worked, still off a little on mph i think but i think i can fix that with the SCT tuner. it was driving me crazy every time i stopped and that needle was pointing south.

thanks
jared

Dane · Jun 20, 2019

jacack said:
thanks, looks like that worked, still off a little on mph i think but i think i can fix that with the SCT tuner. it was driving me crazy every time i stopped and that needle was pointing south.

thanks
jared

Not sure you can adjust that on the SCT unless you tell it different tire sizes. I'm curious if you are able to - but it shouldn't work well if you do that. If your needle is off, say 5mph, it's always 5mph. If you adjust tire size you are compensating more the faster you go since you are off a percentage, not a fixed amount.

jacack · Jun 20, 2019

I readjusted the needle a couple times and got it dead on according to a couple police radar speed signs.

At least it's on at 30 ,50 and 90.

Thanks for the help. Now on to trans and diff service

speedo issue

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