Restore Peak Performance to Your Saturn Relay
If your 2006 Saturn Relay is suffering from frustrating issues like a persistent check engine light, erratic stalling, poor fuel mileage, or a complete no-start condition, a failing Engine Control Module (ECM) is a very likely culprit. As the central computer for your engine, the ECM’s health is critical for performance and reliability. This isn’t just a replacement part; it’s a direct solution to get your vehicle back on the road, running as it should, without the exorbitant costs and scheduling hassles of a dealership visit.
We make the process simple. This genuine GM engine computer, interchangeable with part number 12590032, arrives at your door pre-programmed with the latest official GM software updates. All we need is your vehicle’s VIN at checkout. This critical step ensures the module is perfectly matched to your vehicle’s specific configuration, making installation a straightforward process for both seasoned mechanics and determined DIYers.
Case Study: A Tricky Diagnosis
I remember a 2006 Saturn Relay that came into my shop with an intermittent stalling problem that had stumped two other technicians. The van would run fine for days, then suddenly die at a stoplight. No consistent codes were stored, just a history of random communication errors. After checking all the usual suspects—fuel pump, crank sensor, wiring—I focused on the ECM. By monitoring the live data, I noticed the voltage supplied to the fuel injector drivers would sporadically drop just before a stall. We swapped in a VIN-programmed ECM, and the problem was solved instantly. It’s a classic example of how internal ECM failure can create ghost-like symptoms that are maddening to diagnose without replacing the core component.
Common Signs of a Failing ECM
A faulty engine computer can manifest in numerous ways. If you’re experiencing any of the following, it’s time to consider the ECM as the source of your problems. In my 20+ years of experience, these are the most common indicators I’ve seen in the service bay:
- âś” Persistent Check Engine Light with codes like P0601 (Internal Control Module Memory Check Sum Error) or P0606 (ECM/PCM Processor Fault).
- âś” Unexplained engine stalling or hesitation, especially when warm.
- âś” Noticeable decrease in fuel economy.
- âś” Engine cranks but refuses to start.
- âś” Harsh or erratic automatic transmission shifting.
- âś” Loss of communication with your OBD-II scan tool.
A Straightforward Guide to Installation
Replacing the ECM on your Saturn Relay is a manageable job you can do at home. Our pre-programming service saves you the most complex step. Follow this general guide for a successful installation:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the ECM: On the 2006 Saturn Relay, the Engine Control Module is typically found in the left-hand (driver’s side) of the engine compartment.
- Disconnect the Harnesses: Carefully unclip the wiring harness connectors from the old module. These connectors have locking tabs that need to be released before pulling. Avoid forcing them.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed ECM in the same location and secure it with the bolts.
- Reconnect Everything: Plug the wiring harnesses firmly back into the new module until they click into place. Reconnect the negative battery terminal.
- Perform Security Relearn: In many cases, a simple security relearn procedure is required to sync the new ECM with your vehicle’s anti-theft system. This can typically be done without special tools by cycling the key in the ignition. Instructions are readily available online or in your service manual.
Verified Vehicle Compatibility
This module is a direct replacement for service number 12590032 and also interchanges with 12602044, 12603530, 12605843, 12607096, 12630457, and 19210737. It fits a wide array of GM vehicles, including but not limited to:
- Saturn Relay: 2006 (3.9L)
- Buick: Allure, LaCrosse, Lucerne, Rainier, Enclave
- Cadillac: CTS, DTS, STS, SRX, XLR
- Chevrolet: Cobalt, Colorado, HHR, Impala, Malibu, Monte Carlo, Trailblazer, Uplander
- GMC: Acadia, Canyon, Envoy
- Pontiac: G6, Grand Prix, Pursuit, Solstice
- Saab: 9-7x
- Isuzu: Ascender, i-290, i-370
- Hummer: H3
Please use the detailed fitment list and match your vehicle’s options and original part number to ensure 100% compatibility.
Frequently Asked Questions
Frequently Asked Questions
What information do you need to program this ECM?
We require your vehicle’s 17-digit Vehicle Identification Number (VIN) to program the module with the correct software and settings for your specific car before we ship it.