Is Your Isuzu I-370 or GM Truck Acting Up? Let’s Get It Fixed.
As a technician with over two decades of experience under the hood, I’ve seen countless trucks and SUVs from the GMT355/360 platform (like your 2007 Isuzu I-370, Colorado, Canyon, or Trailblazer) come into the bay with baffling issues. The owner reports a crank-no-start, the engine suddenly dying, a check engine light that won’t go away, or a transmission that shifts erratically. They’ve often replaced sensors and other parts with no luck. The common culprit that ties all these frustrating symptoms together is often the Powertrain Control Module (PCM), the electronic brain of your vehicle.
A Technician’s Real-World Story
“A customer’s 2007 Hummer H3 came in on a tow truck last month. It would crank all day but never fire up. We checked for fuel pressure and sparkโboth were present. The strange part? Our professional scan tool couldn’t establish communication with the PCM. That’s a huge red flag. After verifying the PCM was getting power and ground, we knew the module itself had failed internally. These units, often mounted on the firewall, endure constant heat and vibration, which eventually takes a toll on the delicate internal circuits. We installed one of our pre-programmed PCMs, and the H3 fired right up on the first try. The customer was back on the road in under an hour.”
Diagnosing a Failing PCM: Common Symptoms
A failing PCM doesn’t always mean a completely dead vehicle. The signs can be subtle at first and worsen over time. If you’re experiencing any of the following, your PCM is a likely suspect:
- โ Check Engine Light: You may see codes related to internal processor failure or, more commonly, communication loss codes (U-codes) that indicate other modules can’t talk to the PCM.
- โ Crank-No-Start: The engine turns over but refuses to start, even with good fuel pressure and spark. The PCM isn’t commanding the fuel injectors or ignition coils to fire.
- โ Erratic Engine Performance: Stalling, rough idling, poor acceleration, and a noticeable drop in fuel economy can all point to a faulty engine computer.
- โ Transmission Shifting Problems: The PCM works directly with the Transmission Control Module (TCM). A failing PCM can cause harsh shifts, delayed shifting, or the transmission getting stuck in one gear (limp mode).
- โ Apparent Sensor Failures: You might replace a sensor (like a MAP or O2 sensor) based on a trouble code, only for the code to return immediately. This often means the PCM’s internal circuit for that sensor has failed, not the sensor itself.
The Solution: A Reliable, Programmed PCM
This isn’t just a replacement part; it’s a complete solution. This is a genuine OEM Powertrain Control Module, part number 19210067 (interchangeable with 12602010), that arrives at your door ready for installation. The most critical stepโprogrammingโis done for you.
We use your vehicle’s unique 17-digit VIN to flash the module with the latest, most stable software updates directly from GM. This process is essential for:
- โ Correct Operation: Ensures the PCM has the right parameters for your specific engine, transmission, and options.
- โ Security System Compatibility: The programming correctly syncs the PCM with your vehicle’s anti-theft system (GM Passlock/VATS), preventing a no-start situation after installation.
- โ Plug-and-Play Installation: Eliminates the need for an expensive trip to the dealership or a specialized shop for programming. In most cases, you can install it yourself and the vehicle will start and run correctly. A security relearn procedure may be required, which is a simple process you can do at home.
Guaranteed Fitment for Your Vehicle
This module is a direct-fit replacement for a wide range of GM trucks and SUVs. Please verify your vehicle is on this list. The part number 19210067 should be printed on your original module’s sticker.
- โ 2007-2008 Isuzu Ascender (with 4.2L engine)
- โ 2007 Isuzu I-370
- โ 2007 Isuzu I-290
- โ 2007 Chevrolet Colorado
- โ 2007 GMC Canyon
- โ 2007 Hummer H3
- โ 2007-2008 GMC Envoy (with 4.2L engine)
- โ 2007-2008 Chevrolet Trailblazer (with 4.2L engine)
- โ 2007 Buick Rainier (with 4.2L engine)
- โ 2007-2008 Saab 9-7x (with 4.2L 6-cylinder engine)
IMPORTANT: After completing your purchase, you must provide us with your VIN. We cannot ship your order until we have this information to program the module specifically for your truck.