If you’re dealing with a frustrating Check Engine Light, poor engine performance, or a no-start condition in your 2008-2009 Chevrolet Impala, a failing Engine Control Module (ECM) is often the culprit. As the brain of your vehicle’s engine, the ECM controls everything from fuel mixture and ignition timing to transmission shifting. When it fails, it can cause a cascade of problems that are difficult to diagnose. This replacement ECM, part number 19210737, is the reliable, straightforward solution you need to get your car running smoothly again.
We take the guesswork and high cost out of the repair process. Unlike a generic module from a parts store, this unit comes professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN). We load it with the latest official GM software updates before it even leaves our facility. This ensures optimal performance, fuel efficiency, and compatibility, eliminating the need for an expensive trip to the dealership for programming. Just provide your VIN at checkout, and we handle the rest.
Case Study: A Tricky Diagnosis
A few months back, a 2008 Impala with the 5.3L V8 was towed into my shop. The owner had been chasing a ghost for weeks: intermittent stalling at stoplights and a persistent U0100 ‘Lost Communication with ECM’ code that would come and go. He’d already replaced the battery and checked the main grounds. After hooking up my scan tool, I noticed the live data stream from the ECM would freeze just before the engine quit. This pointed directly to an internal processor failure within the module itself, a common issue I’ve seen on hundreds of these GM platforms. We installed one of our pre-programmed ECMs, and the car fired right up and ran perfectly. The customer saved hundreds by avoiding dealership diagnostic fees and programming costs, and drove away with a reliable car.
Is Your Impala Showing These Telltale Signs?
A failing ECM can manifest in various ways. If you’re experiencing any of the following, it’s a strong indicator that your engine computer needs attention:
- ✔ Unexplained Check Engine Light (CEL) illumination
- ✔ Stalling, stumbling, or rough idling
- ✔ Engine cranks but refuses to start
- ✔ Noticeable decrease in fuel economy
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Communication error codes, such as P0601, P0606, or U0100
- ✔ Failure to pass state emissions testing
A Straightforward Guide to Installation
Replacing the 2008-2009 Impala ECM is a manageable job for a confident DIYer. For the Impala, the ECM is typically located in the lower part of the air cleaner box assembly, making it accessible.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the ECM: Open the hood and find the air cleaner housing. The ECM is situated in the lower section of this assembly.
- Access the Module: You will likely need to remove the top portion of the air cleaner box to gain clear access to the ECM and its electrical connectors.
- Disconnect Connectors: Carefully unlatch and disconnect the wiring harness connectors from the old ECM. Inspect the connectors for any corrosion or damage.
- Remove the Old ECM: Unbolt the old module from its mounting bracket and remove it from the vehicle.
- Install the New ECM: Mount your new, pre-programmed ECM in place and secure it. Reconnect the wiring harnesses, ensuring they click securely into place.
- Reassemble & Reconnect: Reinstall the air cleaner housing and any other components you removed. Reconnect the negative battery terminal.
- Final Steps: Your vehicle may require a security relearn procedure (often as simple as turning the key to the ‘On’ position for 10-15 minutes) to sync with the new module. Start the engine and verify that the Check Engine Light is off and the car is running properly.
Verified Vehicle Compatibility
This ECM is a direct replacement for service number 19210737 and is also interchangeable with part numbers 12590032, 12602044, 12603530, 12605843, 12607096, and 12630457. While this listing is focused on the 2008-2009 Impala ECM, this module fits an extensive range of GM vehicles. Please verify your vehicle’s part number or contact us with your VIN to confirm an exact match.
COLORADO 08 Electronic Control Module; (RH firewall)
ENVOY 07-08 Electronic Control Module; 5.3L (LH engine)
ENVOY 08 Electronic Control Module; 4.2L (LH engine), ID 12607096
G6 09 Electronic Control Module; (LH front engine compartment), 3.6L, ID 19210737
MONTE CARLO 06 Electronic Control Module; (lower part of air cleaner box), 3.5L
XLR 09 Electronic Control Module; (RH front engine compartment), ID 12607096
AURA 08-09 Electronic Control Module; (RH firewall), 2.4L, w/hybrid
DTS 06 Electronic Control Module
DEVILLE 05 Electronic Control Module; (LH engine compartment), ID 12590032
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12605843
IMPALA 06 Electronic Control Module; (lower part of air cleaner box), 3.5L
LACROSSE 08-09 Electronic Control Module; (lower air cleaner housing), 5.3L
STS 06 Electronic Control Module; (LH frame rail), 4.4L
TRAILBLAZER 08 Electronic Control Module; (LH engine), ID 12636660
UPLANDER 09 Electronic Control Module; (LH engine compartment), (3.9L)
ISUZU ASCENDER 08 Electronic Control Module; (4.2L, LH engine), ID 19210737
SAAB 9-7X 07 Electronic Control Module; (LH engine), 8 cylinder
TRAILBLAZER 07 Electronic Control Module; (LH engine), 5.3L
ENCLAVE 08 Electronic Control Module; (behind fan shroud), ID 19210737
LUCERNE 08 Electronic Control Module; (lower part of air cleaner box), 4.6L, ID 12607096
MONTE CARLO 06 Electronic Control Module; (lower part of air cleaner box), 3.9L
RAINIER 07 Electronic Control Module; (LH engine), 5.3L
ISUZU ASCENDER 08 Electronic Control Module; (4.2L, LH engine), ID 12607096
CTS 06 Electronic Control Module; (RH engine compartment), V-Series, ID 12603530
STS 08 Electronic Control Module; (LH frame rail), 4.6L
G6 06 Electronic Control Module; (LH front engine compartment), ID 12603530
G6 08 Electronic Control Module; (LH front engine compartment), 3.6L
ION 06 Electronic Control Module; 2.4L (opt LE5)
MALIBU 06 Electronic Control Module; 3.9L
MALIBU 08 Electronic Control Module; new style (emblem in bumper cover), 2.4L, w/hybrid
RELAY 06 Electronic Control Module; (LH engine compartment), 3.9L
VUE 08-09 Electronic Control Module; 2.4L, VIN Z (8th digit, opt LAT)
OUTLOOK 08 Electronic Control Module; (behind fan shroud)
SOLSTICE 06 Electronic Control Module; (LH front frame rail)
VUE 08 Electronic Control Module; 3.6L
VUE 09 Electronic Control Module; 3.6L, VIN 7 (8th digit, opt LY7)
ACADIA 07-08 Electronic Control Module; (behind fan shroud), ID 12607096 (ECM)
AURA 08-09 Electronic Control Module; (RH firewall), 3.6L
ENVOY 08 Electronic Control Module; 4.2L (LH engine), ID 19210737
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12603530
GRAND PRIX 08 Electronic Control Module; (lower air cleaner box), 5.3L
HHR 06 Electronic Control Module; (LH rear engine compartment), 2.4L
STS 08 Electronic Control Module; (LH frame rail), 4.4L
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12590032
ISUZU I-290 08 Electronic Control Module; (RH firewall)
LUCERNE 06 Electronic Control Module; (lower part of air cleaner box), 4.6L
MALIBU 09-10 Electronic Control Module; 2.4L, w/hybrid
UPLANDER 08 Electronic Control Module; (LH engine compartment), (3.9L), ID 19210737
IMPALA 06 Electronic Control Module; (lower part of air cleaner box), 3.9L
MONTANA 06 Electronic Control Module; (LH engine compartment), (SV6), 3.9L
TRAILBLAZER 08 Electronic Control Module; (LH engine), ID 19210737
ENVOY 08 Electronic Control Module; 4.2L (LH engine), ID 12636660
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12602044
TRAILBLAZER 08 Electronic Control Module; (LH engine), ID 12607096
TRAILBLAZER 09 Electronic Control Module; (LH engine), 4.2L
CANYON 08 Electronic Control Module; (RH firewall)
COBALT 06 Electronic Control Module; (LH front engine compartment), 2.4L (VIN B, 8th digit, 4-146)
ISUZU I-370 08 Electronic Control Module; (RH firewall)
MALIBU 09 Electronic Control Module; 3.6L
SRX 08 Electronic Control Module; (LH engine compartment), (4.6L)
SAAB 9-7X 08 Electronic Control Module; (LH engine), 5.3L
ENCLAVE 08 Electronic Control Module; (behind fan shroud), ID 12607096
G6 09 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12607096
IMPALA 08-09 Electronic Control Module; (lower part of air cleaner box), 5.3L
XLR 06 Electronic Control Module; (RH front engine compartment), 4.4L
XLR 08 Electronic Control Module; (RH front engine compartment)
ENVOY 09 Electronic Control Module; (LH engine), 4.2L
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12607096
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12618163
LUCERNE 08 Electronic Control Module; (lower part of air cleaner box), 4.6L, ID 19210737
MONTANA 08-09 Electronic Control Module; (LH engine compartment)
PURSUIT 06 Electronic Control Module; (LH front engine compartment), 2.4L
VUE 10 Electronic Control Module; 3.6L
ACADIA 08 Electronic Control Module; (behind fan shroud), ID 19210737 (PCM)
DTS 08 Electronic Control Module
TERRAZA 06 Electronic Control Module; (LH engine compartment), 3.9L
TRAILBLAZER 07 Electronic Control Module; (LH engine), 6.0L
SAAB 9-7X 08 Electronic Control Module; (LH engine), 6.0L
HUMMER H3 08 Electronic Control Module; (RH firewall)
MALIBU 08 Electronic Control Module; new style (emblem in bumper cover), 3.6L
UPLANDER 08 Electronic Control Module; (LH engine compartment), (3.9L), ID 12607096
UPLANDER 06 Electronic Control Module; (LH engine compartment), 3.9L
Why do you need my VIN?
Why do you need my VIN?
Your VIN is crucial because it allows us to program the ECM with the exact software and calibrations your specific vehicle requires. This includes details about your engine, transmission, and factory options. This VIN-specific programming ensures the module works correctly right out of the box, saving you from needing expensive dealer tools.
Is any additional programming required after installation?
Why do you need my VIN?
Your VIN is crucial because it allows us to program the ECM with the exact software and calibrations your specific vehicle requires. This includes details about your engine, transmission, and factory options. This VIN-specific programming ensures the module works correctly right out of the box, saving you from needing expensive dealer tools.
Will this fix my car’s specific problem?
Why do you need my VIN?
Your VIN is crucial because it allows us to program the ECM with the exact software and calibrations your specific vehicle requires. This includes details about your engine, transmission, and factory options. This VIN-specific programming ensures the module works correctly right out of the box, saving you from needing expensive dealer tools.
How do I find the part number on my current ECM?
Why do you need my VIN?
Your VIN is crucial because it allows us to program the ECM with the exact software and calibrations your specific vehicle requires. This includes details about your engine, transmission, and factory options. This VIN-specific programming ensures the module works correctly right out of the box, saving you from needing expensive dealer tools.