If your 2001-2002 Chevrolet Impala is giving you headaches with stalling, erratic behavior, or a persistent Check Engine Light, you’ve likely pinpointed the culprit: a failing Powertrain Control Module (PCM). As a technician with over two decades of experience under the hood, I’ve seen firsthand how a faulty PCM can turn a reliable car into a source of constant frustration. This isn’t just a part; it’s the brain of your engine’s operation, and when it falters, everything from fuel economy to shifting performance suffers.
This isn’t just any replacement part. This is a dependable, direct-fit solution for part number 09378702. The most significant benefit we offer is our professional programming service. Before this module ever leaves our facility, we flash it with the latest official GM software updates, tailored specifically to your car using the Vehicle Identification Number (VIN) you provide. This critical step ensures your new 2001-2002 Impala PCM communicates perfectly with your vehicle’s other systems right out of the box, saving you from a costly and time-consuming trip to the dealership.
Is Your GM Vehicle Showing These Symptoms?
- ✔ Check Engine Light is on with codes like P0601 (Internal Control Module Memory Check Sum Error) or other communication faults.
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained stalling, especially when coming to a stop or at idle.
- ✔ Noticeably poor fuel mileage and sluggish acceleration.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Failure to pass state emissions testing.
Case Study: A Tricky Diagnosis
I remember a 2001 Pontiac Grand Am that came into my shop with a bizarre intermittent no-start condition. The owner had already replaced the battery and starter. We scanned it and found no active trouble codes, which can be frustrating. After checking fuel pressure and spark, which were both fine when it decided to run, I focused on the PCM. On these GM platforms, heat soak can cause internal solder joints in the module to fail. After letting the car run to full operating temperature and shutting it off, it wouldn’t restart. A few taps on the PCM housing, and it fired right up. It was a classic case of a failing computer, confirmed by replacing it with a properly programmed module like this one. The problem never returned.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to ensure all systems are powered down.
- ✔ Locate the PCM: On most of these vehicles (like the Impala and Monte Carlo), the PCM is located in the engine compartment on the driver’s side, often attached to the air filter housing. On the Grand Am, it’s under the center of the dash.
- ✔ Disconnect the Harnesses: Carefully release the locking tabs on the electrical connectors and unplug them from the old PCM. Avoid forcing them.
- ✔ Remove the Old Module: Unbolt the PCM from its mounting bracket. There are typically two or three bolts holding it in place.
- ✔ Install the New PCM: Mount your new, pre-programmed PCM onto the bracket and secure the bolts.
- ✔ Reconnect Everything: Plug the electrical harnesses firmly into the new module until they click into place. Reconnect your negative battery terminal.
- ✔ Final Step: In some cases, a security relearn procedure may be necessary. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. Consult your vehicle’s service information for specific steps if needed.
Will This Fit My Vehicle?
This module is a guaranteed fit for the following vehicles, provided the part number 09378702 matches your original unit. Please verify your part number before ordering.
- 2001-2002 Chevrolet Impala: With 3.4L engine, located in the LH engine compartment.
- 2001 Chevrolet Monte Carlo: With 3.4L engine, located in the LH engine compartment.
- 2001 Pontiac Grand Am: With 3.4L engine, located in the LH center dash.
- 2001 Oldsmobile Aurora: With 3.5L engine, located in the LH engine compartment.
- 2001 Oldsmobile Silhouette: Located in the LH engine compartment.
- 2000 Oldsmobile Intrigue: Located in the LH engine compartment.
Restoring your vehicle’s performance and reliability is straightforward with the right part. This pre-programmed 2001-2002 Impala PCM is the definitive fix for your engine management problems, getting you back on the road with confidence.
Frequently Asked Questions
Do I need to do anything after installing this PCM?
Because we program the module to your VIN before shipping, it is a direct installation. In some cases, a simple security relearn procedure (turning the key to ‘ON’ for 10-15 minutes) may be required, which does not need any special tools.
What information do you need from me?
After you complete your purchase, you must provide us with your vehicle’s 17-digit VIN. We cannot ship the module until we have this information to program it correctly.
Is this a brand new part?
This is a high-quality, tested original equipment part that has been professionally prepared and programmed with the latest software for your vehicle. It meets or exceeds original factory specifications.
Will this fix my car’s problem for sure?
This module will correct issues directly caused by a faulty PCM. While the symptoms listed are very common for PCM failure, we always recommend a proper diagnosis by a qualified mechanic to confirm the PCM is the root cause of your vehicle’s issues.
Where is the part number located on my original PCM?
The part number is printed on a sticker on the outside of your original module. You will need to locate and remove your old PCM to verify the number is 09378702.