Update to adding trans temp gauge...

[mo2058130]

Glad I could help. Spent a lot of time trying to find this information before I finally figured it out for myself. Hopefully, having it posted here will make it easier for others that want to add the gauge.

Time well spent sir. I thank you very much!


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[toddis32]

Many options on eBay from these guys as far as gauge faces: https://www.ebay.com/str/gmgaugerepair/Gauge-Faces/_i.html?_storecat=8454042017

Make sure you get an 03-05 face as the PRNDL is different than 06. They do not sell just 1 stepper motor or bulb but you can find them on eBay also.

The black and orange OEM pointer/needle is here:

http://www.ebay.com/itm/282398774043?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

 

[DougAMiller]

Hey, so I stumbled upon this thread as I am doin the gauge in my 07 classic silverado and I pulled the bin file and 00x000059 is already 00 on mine yet trans temp is inop....am I maybe looking at the wrong slot?

Every one in my experience has been 00 at 0x0059 for the gauge to function, and 04-06 are usually set to 01. However, I have only looked 03-06. I would think an 07 classic would be the same, but I haven't looked at these. I would check the stepper motor and connections. The circuit board traces are also easily damaged when changing stepper motors, so that is something else to check.

 

[Al90iroc6]

Thanks for the tip...ill look into it

 

[toddis32]

Thanks for the tip...ill look into it

They're at the same location on 07 classic. 00 at 0x0059 The EEPROM is not always in the same location.

 

[Al90iroc6]

So am I understanding this right....the red TT slot is trans temp? If it is then when I read my chip it is at 00 already. I checked and reflowed my silder joints on the stepper and check voltage readings comparing the pin of the stepper to the little solder dot on the board that has the trace to the pad, and all checks out but no motor operation... any suggestions?
Thanks for the responses!

 

[toddis32]

View attachment 236433 View attachment 236434
So am I understanding this right....the red TT slot is trans temp? If it is then when I read my chip it is at 00 already. I checked and reflowed my silder joints on the stepper and check voltage readings comparing the pin of the stepper to the little solder dot on the board that has the trace to the pad, and all checks out but no motor operation... any suggestions?
Thanks for the responses!

Bad sensor maybe? The sensor is in the manifold pressure switch on a 2003 Tahoe. Not sure if it is the same on a truck.

 

[DougAMiller]

View attachment 236433 View attachment 236434
So am I understanding this right....the red TT slot is trans temp? If it is then when I read my chip it is at 00 already. I checked and reflowed my silder joints on the stepper and check voltage readings comparing the pin of the stepper to the little solder dot on the board that has the trace to the pad, and all checks out but no motor operation... any suggestions?
Thanks for the responses!

Todd has a good suggestion, but I can't think of anything else to check. It takes it a lot longer to come off the bottom mark than the engine temperature, I assume you have given the transmission plenty of time to warm up?

 

[Al90iroc6]

Yea, I have gave it plenty of drive time to warm up. I have access to a scan tool so I'll check what trans temp is reading in the pcm and tcm

 

[ChevyDawg22]

2006 Silverado. I have added everything I need and checked programming. It was already 00.

What else can be done? I have a tech 2 and subscription for programming with acdelco.

My truck has working trans temp in the computer, because it is successfully logged with HP tuners.

Thanks, This Rom programming is awesome!

 

[toddis32]

Someone may have programmed it already. Usually when I program an 06 the value at 59 is 03 and I change it to 00. Never had any issues with an 06 model.

 

[ChevyDawg22]

Someone may have programmed it already. Usually when I program an 06 the value at 59 is 03 and I change it to 00. Never had any issues with an 06 model.

So a 2006 cluster with 00 on the 59 block should work? I will try again and see what happens.

 

[toddis32]

Yes. I always read the device again after programming just to make sure the programming stuck.

 

[ChevyDawg22]

Your correct. It was a software issue. It was programmed 03 and is now working with 00 programmed

 

[johnathanpotts]

I rebuild clusters and I have seen clusters with stock bulbs in the trans temp position but never had trans temp motors. Haven’t figured out if there’s any rhyme or reason to it though.

Never heard anything about trans temp backlights being there when the gauge wasn't. Might be true, just never heard of it.

As for your question about turning on the feature. I'm still working on figuring out the rest of the contents of the eeprom, so no guarantee that there aren't some subtleties that I don't yet understand. But, at least in the two clusters that I have programmed, it is pretty simple.

In general I am happy to help others out, and don't mind doing it. I am a little concerned about being held responsible if something were to go wrong.

 

[johnathanpotts]

Yes. I always read the device again after programming just to make sure the programming stuck.

05-07c will almost always be "03" at 59. Change to "42" to get trans temp.

 

[BigBadSubaru]

Anyone have any idea where it's stored in the EEPROM (if it is stored there) whether it is a truck or SUV cluster? My 03 Suburban came with a truck cluster in it and I want to get rid of the "service brake booster" message at startup without having to drop a Benjamin at the Chevy dealer... I have the programmer on the way to reprogram it to the correct mileage and such; happy to provide a dump of the chip if that helps figure it out if it's not known where it's stored.

 

[BigBadSubaru]

So I figured it out, the processor in the cluster must just use the model ID, I changed the model ID (the four letters on the sticker on the back, on mine they were DWFY, changed them to DSXR (I used a high tech method - searched Google for a 2003 Suburban instrument cluster image, got lucky and found one with a picture of the label on the back) and programmed the chip with that along with the correct mileage, plugged it back in and now it doesn't throw the "service brake booster" message at startup, and says "driver door ajar" if the door is open instead of "driver 1"

 

[BigBadSubaru]

Well, I spoke too soon, the "service brake booster" message is back :-( I've also seen where other GMT800s have more in the menu thank just trip, hours, and odo - stuff like oil life, distance to empty, etc... Would be cool if I could somehow unlock those menus in mine! any ideas?

 

[mattt]

Well, I spoke too soon, the "service brake booster" message is back :-( I've also seen where other GMT800s have more in the menu thank just trip, hours, and odo - stuff like oil life, distance to empty, etc... Would be cool if I could somehow unlock those menus in mine! any ideas?

Do you have the steering wheel control buttons? That is the only way to access those other options, which is nice to have, speaking from experience.