Is Your 2006 HUMMER H3 Running Rough or Not Starting?
If you’re dealing with a frustrating check engine light, erratic engine performance, or a no-start condition on your 2006 HUMMER H3, a failing Powertrain Control Module (PCM) is a very common culprit. As the central computer for your engine and transmission, when it starts to go, it can create a host of problems that are often difficult to diagnose.
A Real-World Scenario from Our Shop
“A customer’s 2006 Hummer H3 came in last week with a list of complaints: the engine would randomly stall at stoplights, the transmission was shifting harshly, and the check engine light was on with a handful of communication codes (U-codes). They had already replaced a few sensors with no luck. After connecting my scan tool, I saw intermittent data loss from the PCM. On these H3s, located on the right-hand firewall, the constant heat cycles and engine vibration take their toll on the internal circuits over many years. This was a classic case of PCM failure.”
Symptoms of a Failing 2006 H3 PCM
Over my 20+ years of diagnostics, I’ve seen these specific signs point directly to the PCM hundreds of times. See if any of these sound familiar:
- Persistent Check Engine Light (CEL)
- Engine cranks but will not start
- Poor fuel economy
- Harsh or erratic automatic transmission shifting
- Stalling, stumbling, or rough idling
- Communication error codes (U-codes) with scan tools
- Apparent failure of multiple unrelated sensors at once
The Direct-Fit, Programmed Solution
Don’t let a faulty computer keep your H3 off the road. This Powertrain Control Module is the reliable, straightforward solution you need. We take all the guesswork and dealership hassle out of the equation. Here’s how our process works for you:
- Place Your Order: Simply purchase this module.
- Provide Your VIN: After your purchase, you’ll provide us with your vehicle’s 17-digit VIN.
- We Handle the Programming: Our technicians will flash the module with the latest, most stable GM software updates specific to your exact vehicle. This ensures perfect compatibility with your engine, transmission, and all factory options.
- Plug & Play Installation: We ship the module directly to you. In most cases, installation is as simple as disconnecting the battery, swapping the old module, and reconnecting. You will need to perform a security relearn procedure, which is a simple process that can be done without any special tools.
By getting a module from us, you are receiving a component that is ready to solve your vehicle’s issues right out of the box, saving you from expensive dealership programming fees and diagnostic time.
This Module is a Direct Replacement for the Following Part Numbers:
12569773, 12588650, 12589311, 12589585, 12591647, 12591648, 12593531, 12593532, 12594430, 12594431, 12596783, 12596784, 12597521, 12597776, 12597777, 12600818, 12604438, 12604439, 12606369, 12606373, 12606374, 12606398, 12606399, 19209820, 19209821
Verified Vehicle Fitment:
- HUMMER H3: 2006 (RH firewall)
- CHEVROLET COLORADO: 2004-2006 (RH firewall)
- GMC CANYON: 2004-2006 (RH firewall)
- CHEVROLET TRAILBLAZER: 2006 (4.2L, LH engine)
- GMC ENVOY: 2006 (4.2L, LH engine)
- BUICK RAINIER: 2006 (4.2L, LH engine)
- ISUZU ASCENDER: 2006 (4.2L, LH engine)
- ISUZU I-280 / I-350: 2006 (RH firewall)
- SAAB 9-7X: 2006 (6 cylinder, LH engine)