Is Your 2007 Cadillac DTS Running Rough or Not Starting?
A failing Powertrain Control Module (PCM), often called the engine computer, is one of the most common and frustrating issues for any vehicle owner. As the central command center for your engine and transmission, even minor glitches can lead to significant performance problems, poor fuel economy, or a car that won’t start at all. If your 2007 Cadillac DTS is experiencing erratic behavior, has a persistent check engine light, or has been diagnosed with a faulty computer, you’ve found the reliable, cost-effective solution.
This is a genuine, used OEM Powertrain Control Module, part number 19210736 (also compatible with 12605843), meticulously tested and ready for installation. We take the guesswork and high dealership costs out of the equation. Before this unit ships, our technicians will program it specifically to your vehicle’s Vehicle Identification Number (VIN). This critical step ensures that the computer has the correct software and calibrations for your DTS’s specific engine, transmission, and options, restoring its original performance and efficiency.
From the Diagnostic Bay
We had a 2007 Cadillac Lucerne (which uses the same family of PCM) come into the shop with a bizarre set of symptoms. The owner complained of intermittent stalling at stoplights, hard shifting from 1st to 2nd gear, and a cooling fan that would run constantly, even on a cold day. There were no specific codes pointing directly to the PCM, just a handful of communication errors. After hours of checking wiring harnesses and sensors, we swapped in a known-good, programmed PCM. Instantly, all the problems vanished. The original computer had an internal fault that was corrupting data on the vehicle’s network, causing chaos in other systems. It’s a classic example of how a failing PCM can manifest in ways that don’t seem directly related to the engine.
Common Symptoms of a Failing 2007 DTS PCM
- ✔ Persistent Check Engine Light (CEL) with communication-related or internal processor fault codes.
- ✔ Engine stalling, stumbling, or misfiring for no apparent reason.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ A complete no-start condition where the engine cranks but will not fire up.
- ✔ Noticeable decrease in fuel economy.
- ✔ Failure to pass an emissions test.
- ✔ Other electronic modules in the vehicle behaving strangely.
The Importance of VIN Programming
You cannot simply take a PCM from another vehicle and install it in your DTS. The module is encoded with security information and operational parameters specific to the original car it came from. Our mandatory VIN programming service solves this. By providing us with your VIN during checkout, you receive a module that is truly ready for your vehicle. We flash it with the latest GM-approved software updates, which can often resolve underlying drivability issues you may not have even known were software-related. This ensures a seamless integration, allowing the computer to correctly communicate with your car’s anti-theft system, gauges, and other vital components.
Guaranteed Fitment for a Wide Range of GM Vehicles
While this is a perfect solution for the 2007 DTS PCM, this versatile module (part #19210736) was also used across an extensive lineup of 2007 General Motors vehicles. Please verify your original part number or consult the list below to confirm compatibility. This part is a direct replacement for models such as:
- Cadillac: DTS, XLR, SRX, STS, CTS (V-Series)
- Buick: Lucerne
- Chevrolet: Impala, Monte Carlo, Cobalt, HHR, Uplander
- Pontiac: G6, Grand Prix, G5, Solstice
- Saturn: Sky, Outlook, Aura, Vue, Ion
- GMC: Acadia
- And more… (Refer to the detailed fitment list in the product data)
This is a used part sourced from a salvaged vehicle. It has been inspected and is fully functional. By choosing a quality used OEM part, you get the same reliability and performance as a new part without the excessive cost.
Frequently Asked Questions
Do I need to do any programming myself?
No. The main programming is done by us before the part is shipped. We use your VIN to load the correct GM software and calibrations for your specific vehicle. In some cases, a simple security relearn procedure may be required after installation, which can often be done without special tools. Instructions are widely available online for this process.
Where do I provide my VIN?
Please enter your 17-digit Vehicle Identification Number (VIN) in the notes section during checkout or send it to us in a message immediately after your purchase. We cannot ship your part until we have this information.
What is the difference between an ECM and a PCM?
ECM stands for Engine Control Module, and PCM stands for Powertrain Control Module. In modern vehicles like your 2007 DTS, the module controls both the engine and the automatic transmission. Therefore, PCM is the more accurate term, but the two are often used interchangeably.
Is this a plug-and-play part?
Because we pre-program it to your VIN, it is as close to plug-and-play as possible. You will install the module, connect the battery, and in most cases, the vehicle will start and run correctly. As mentioned, a security relearn or crankshaft position sensor variation relearn may be needed, which is a standard procedure for this type of repair.
How do I locate the PCM on my 2007 Cadillac DTS?
On the 2007 Cadillac DTS, the Electronic Control Module (PCM) is typically located inside the engine bay, integrated into the lower part of the air cleaner box assembly. Always disconnect the vehicle’s battery before attempting to remove or install any electronic module.