- Staff
- #1
This mostly applies to owners of LML's as owners of 2010 and earlier trucks can read the stock calibration out of your ECM.
1. You need YOUR VIN number from the truck you a re tuning. It MUST be the VIN to the truck the tune is going to.
2. Go to GM's TIS site( https://tis2web.service.gm.com/tis2web ), and put the VIN in the box in the upper left that says VIN, and click get CAL id.
3. On the next page select ECM, and click next.
4. The next page will be the page with the calibration ID info for the tune that is supposed to be in the truck you are looking up. inside the box for module in the upper left you need to go through and select each one and in the main window below it will show the calibration ID's for each segment. You can also select each revision and see why GM made a change. The segment listed at teh bottom of the tree will be the most current segment for the most up to date tune file.
5. Now the fun part. I listed the segment breakdown for each LML tune file I uploaded just for this step so you didn't have to download each file needlesly. Match the segment number up one at a time with the tune you need. You have to make sure that ALL segments of the tune file match to what TIS shows for your truck. If not, bad things can happen. This can be a time consuming task, but it is neccesary. It helps though to know 2500/3500 and such as the description for the tune files can help the process of elimination right there quite a bit.
Hopefully others can understand my directions as I know I'm not the best at righting them out. Any questions please post up and I will amend this sticky as needed to clarify.
1. You need YOUR VIN number from the truck you a re tuning. It MUST be the VIN to the truck the tune is going to.
2. Go to GM's TIS site( https://tis2web.service.gm.com/tis2web ), and put the VIN in the box in the upper left that says VIN, and click get CAL id.
3. On the next page select ECM, and click next.
4. The next page will be the page with the calibration ID info for the tune that is supposed to be in the truck you are looking up. inside the box for module in the upper left you need to go through and select each one and in the main window below it will show the calibration ID's for each segment. You can also select each revision and see why GM made a change. The segment listed at teh bottom of the tree will be the most current segment for the most up to date tune file.
5. Now the fun part. I listed the segment breakdown for each LML tune file I uploaded just for this step so you didn't have to download each file needlesly. Match the segment number up one at a time with the tune you need. You have to make sure that ALL segments of the tune file match to what TIS shows for your truck. If not, bad things can happen. This can be a time consuming task, but it is neccesary. It helps though to know 2500/3500 and such as the description for the tune files can help the process of elimination right there quite a bit.
Hopefully others can understand my directions as I know I'm not the best at righting them out. Any questions please post up and I will amend this sticky as needed to clarify.