Restore Peak Performance to Your GM Vehicle
If you’re dealing with frustrating engine problems in your 1999 Oldsmobile Alero or another compatible GM model, a failing Powertrain Control Module (PCM) is often the hidden culprit. As the central computer for your engine and transmission, its health is critical for everything from smooth idling to proper shifting. This replacement PCM, part number 9366314, is the definitive solution to get your vehicle running reliably again. We take the guesswork and hassle out of the repair by programming the module specifically to your vehicle’s VIN with the latest GM software updates before it even ships. This ensures a seamless installation and immediate performance restoration.
A Technician’s Notebook
I remember a 1999 Pontiac Grand Am with the 3.4L V6 that came into my bay with a complaint that stumped two other shops. The car would randomly stall at red lights and sometimes wouldn’t start for 10-15 minutes. There were no consistent trouble codes, just a history of random communication errors. After verifying fuel pressure and spark were good, I focused on the PCM. On these GM platforms, I’ve seen internal board failures cause intermittent voltage drops that don’t always set a hard code like a P0601. We swapped in a VIN-programmed PCM, and the problem vanished instantly. The owner was thrilled to have their dependable car back without spending a fortune on diagnostics.
Why VIN Programming is a Game-Changer
Ordering a generic, un-programmed module from a parts store is only half the battle. You’d still face a tow to the dealership and a hefty bill for programming. Our process eliminates that completely. By providing your Vehicle Identification Number (VIN) at checkout, you receive a 1999 Alero Powertrain Control Module that is truly plug-and-play. It arrives ready to communicate perfectly with your car’s other systems, including the anti-theft system (VATS/Passlock), ensuring a quick and successful repair right in your own garage.
Is Your GM Vehicle Showing These Telltale Signs?
- ✔ Check Engine Light is on with codes like P0601, P0606, or other communication faults.
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained stalling, rough idling, or hesitation during acceleration.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ A noticeable decrease in fuel economy.
- ✔ Failure to pass an emissions inspection.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the PCM: On most compatible vehicles like the Alero and Grand Am, the PCM is located inside the vehicle, on the left-hand (driver’s) side, under the center dash. On vans like the Venture or Silhouette, it may be in the engine compartment.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs that need to be released. Once disconnected, unbolt the module from its mounting bracket.
- ✔ Install the New Module: Mount your new, pre-programmed PCM in place of the old one. Securely plug in all electrical connectors, ensuring they click into place.
- ✔ Reconnect and Start: Reconnect the negative battery terminal. The vehicle may require a security relearn procedure, which typically involves turning the key to the ‘ON’ position for 10-15 minutes. Your vehicle’s service manual will have the specific steps. Start the engine and enjoy restored performance!
Verified Vehicle Compatibility
This module is a direct replacement for service numbers 09356741, 16236757, 9357034, 9357440, and 9366314. It fits the following vehicles and options:
- Achieva 1998 (6-191, 3.1L)
- Alero 1999 (3.4L, LH center dash)
- Bonneville 1998
- Camaro 1998 (6-231, 3.8L)
- Century 1998 (6-191, 3.1L)
- Cutlass 1998-1999
- Eighty Eight 1998
- Firebird 1998 (6-231, 3.8L)
- Grand Am 1998 (6-191, 3.1L)
- Grand Am 1999 (3.4L, LH center dash)
- Grand Prix 1998
- Intrigue 1998
- LeSabre 1998 (6-231, 3.8L)
- Lumina Car 1998 (LH engine compartment)
- Malibu 1998 (6-191, 3.1L)
- Monte Carlo 1998
- Park Avenue 1998 (6-231, 3.8L)
- Regal 1998
- Riviera 1998 (6-231, 3.8L)
- Silhouette 1998 (LH engine compartment)
- Skylark 1998 (6-191, 3.1L)
- Trans Sport 1998 (LH engine compartment)
- Venture 1998 (6-207, 3.4L)
Frequently Asked Questions
Frequently Asked Questions
What exactly does this Powertrain Control Module do?
The PCM is your car’s main computer. It controls the engine’s fuel injection, ignition timing, and the transmission’s shift points to ensure optimal performance, fuel economy, and emissions.
How does the VIN programming process work?
After you place your order, you’ll provide us with your 17-digit VIN. Our technicians use this number to load the exact, most current GM-approved software for your specific vehicle onto the module before we ship it to you.
Do I need to do any extra programming after I install it?
No. Because we program it to your VIN, no further dealer programming is required. You may need to perform a simple security relearn procedure, which does not require special tools and instructions can be found online or in your owner’s manual.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the PCM (common codes P0601-P0606), then yes, this part will resolve the issue. Always ensure other potential causes have been properly diagnosed first.
Is this a used part?
This is a high-quality, inspected, and tested replacement part that has been verified to meet or exceed original equipment performance. It is not a new part from the original manufacturer.