Diesel Technology Of Chattanooga

06/29/2026

We will be closed 7/3 in observance of Independence Day. We will be back in the office on 7/6. Please note this will extend our turn around times but we will be vigilant in getting the orders out as soon as possible! Thank you and have a Wonderful Holiday Weekend!

06/12/2026

We love our customers :)

On 6/5/2026 12:25 PM, Rick Faveau wrote:
To Josh,

Hey Josh, I wanted to update you on the status of my truck. I installed the PCM back in the truck and it was doing some weird stuff with the check engine light coming on and off. I replied to an older email, so you probably didn’t get the message. It explains what I was experiencing. On the first cold start, the check engine light came on and stayed on for less than a minute. After shutting it off and back on again it was acting normal where it would come on and shut off within 3 seconds. I did a drive cycle to make sure the modules came back into the PCM. After checking that they were good, I took it to my local smog shop and it PASSED!!! I was a little worried about it, but it came through!!
You guys came through!! I can’t thank you enough for your support and integrity of handling this. Most places would have wanted to just sell me a refurbished PCM, but you and your company showed such integrity of how a business should operate. This is true customer service!!
I understand this because prior to working for Autozone, I had a high end cleaning business for 22 years, a total of 30 years in the industry. Customer Service was my top priority and your company shows that in glowing colors!!
What a great experience working with all of you and you can be assured I will be singing your company’s praises for now on!!
Keep up the great work!!
Sincerely,
Rick Faveau
A very satisfied customer!!

05/22/2026

05/22/2026

Friendly Reminder: We will be closed Monday 5/25 in observance of Memorial Day!

04/23/2026

Do you have an E99 7.3 Powerstroke but want to run those bada** L99 tunes?! No need to pay an arm and a leg for a new PCM! We can do a DPC Chip Conversion to your PCM that will increase the processing speed so that the E99 PCM (DPC-401 or 402) will run the L99 software (DAC3 or PMT5) without glitching. This also means if you run a chip and have performance tunes available - you'll be able to upgrade those to L99 too!

If you have questions email us at [email protected]
https://www.dieseltechchatt.com/products/7-3-pcm-dpc-40x-to-42x-chip-conversion?variant=41047039672496

04/16/2026

7.3 PCM Code of the week: P1280 - ICP (Injector Control Pressure Sensor) cir low
Typically presents as a rough idle.
The PCM will lie about the pressure if it's not getting proper voltage. The ICP Voltage should be .9V to fire the injectors. 1V = 700 psi ... so if while running you are showing 2.5V and 1750 psi then both readings are correct. If things are out of range the PCM will substitute fake pressure info but it cannot fake voltage readings.
The ICP sensor should show between 0.2-0.35V at 0 psi with KOEO and .9V to fire injectors and truck to be running - if the range is below 0.2 then either it is not getting signal or the sensor is unplugged. When you run a KOER test - what is the voltage showing?

Send a message to learn more

04/13/2026

Well this is cool. https://pscrepair.com/?fbclid=IwY2xjawRKJ_5leHRuA2FlbQIxMABicmlkETFKMU94WnFXY2ZiTkpiZ2lIc3J0YwZhcHBfaWQQMjIyMDM5MTc4ODIwMDg5MgABHhcIsihAlXF9D2HN6rgVUDKPtlu7ULQGkIjyYnJJ4_kVIVXXVcZx7HDx9RJl_aem_CrZIj5YuheB_QJL74HHRrA