Restore Your Vehicle’s Brain and Get Back on the Road
Is your 1999-2000 Buick LeSabre or other GM vehicle acting up? Unexplained stalling, a persistent Check Engine Light, or erratic transmission shifting can be incredibly frustrating. Often, the root cause isn’t a dozen different sensors, but the one component that controls them all: the Powertrain Control Module (PCM). This genuine OEM PCM, part number 09361735, is the reliable and affordable solution you’ve been looking for. Sourced from a salvaged vehicle and rigorously tested, it’s ready to restore your engine’s performance and reliability.
The biggest hurdle with replacing a PCM is usually the programming. A trip to the dealership can be costly and time-consuming. We eliminate that step entirely. When you purchase this module, we will flash it with the latest official GM software updates, specifically matched to your vehicle’s VIN. This ensures that it communicates perfectly with your engine, transmission, and security systems right out of the box, making the installation process as smooth as possible. A properly functioning 1999-2000 LeSabre PCM is critical for optimal fuel economy, emissions, and drivability.
Case Study: A Tricky Diagnosis
I remember a ’99 Pontiac Grand Prix that came into the shop with a complaint of intermittent stalling and a no-start condition that would happen without warning. The owner had already replaced the crank sensor and fuel pump. We scanned it and found no hard codes, just a history of communication loss errors. After checking the wiring harness for breaks or corrosion—a common issue on these platforms—we focused on the PCM. By monitoring live data, we saw the PCM would occasionally just stop sending commands. We swapped in a pre-programmed unit like this one, and the problem was solved instantly. It’s a classic example of how a failing PCM can mimic other component failures, costing you time and money on parts you don’t need.
Common Symptoms of a Failing PCM
If you’re experiencing any of the following issues, a faulty PCM could be the culprit. This is especially true if you see diagnostic trouble codes (DTCs) related to internal module memory or processor faults.
- ✔ Check Engine Light is on with codes like P0601, P0602, P0605, or P0606 (Internal Control Module Errors).
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained drops in fuel economy.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ The vehicle stalls unexpectedly while driving or at idle.
- ✔ Communication errors with your scan tool.
A Straightforward Guide to Installation
Installing your VIN-programmed 1999-2000 LeSabre PCM is a manageable job for a DIYer with basic tools. Following these steps will help ensure a successful replacement.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes to allow capacitors to discharge.
- Locate the PCM: On most compatible vehicles like the LeSabre, the PCM is located in the engine compartment, typically inside the air filter box assembly for protection. Consult a repair manual for your specific model’s location if you’re unsure.
- Disconnect the Connectors: Carefully unlatch and remove the electrical wiring harness connectors. Inspect them for any signs of corrosion or bent pins. Clean them with electrical contact cleaner if necessary.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed PCM in place and securely fasten it. Reconnect the wiring harnesses, ensuring they click firmly into place.
- Reconnect the Battery: Reattach the negative battery terminal.
- Perform Security Relearn: You will likely need to perform a simple security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating two more times. This allows the new PCM to sync with your vehicle’s anti-theft system.
Verified Vehicle Compatibility
This module, part number 09361735, is a direct-fit replacement for a wide range of GM vehicles. Please verify your vehicle is on this list and that the location matches. Providing your VIN during checkout guarantees we program it correctly for your specific application.
GRAND PRIX 99-00 (LH engine compartment)
BONNEVILLE 99-00 (LH engine compartment)
CUTLASS 99 (LH center dash, ID 9361735)
INTRIGUE 99 (LH engine compartment)
RIVIERA 99 (RH dash)
SILHOUETTE 99 (LH engine compartment)
VENTURE 99 (LH engine compartment)
IMPALA 00 (LH engine compartment, 3.4L or 3.8L)
MONTANA 99 (LH engine compartment)
CENTURY 99 (LH engine compartment)
PARK AVENUE 99 (LH front engine compartment)
TRANS SPORT 99 (Canada, LH front engine compartment)
LUMINA CAR 99 (LH engine compartment)
REGAL 99 (LH engine compartment)
MALIBU 99 (LH dash, 3.1L)
LESABRE 99-00 (LH front engine compartment)
MONTE CARLO 99-00 (LH engine compartment)
Frequently Asked Questions
Frequently Asked Questions
Do I need to do anything after I buy it?
Yes. After you complete your purchase, you MUST send us your vehicle’s 17-digit VIN. We cannot ship your order until we have this information to program the module correctly.
Is this a new part?
No, this is a genuine, tested OEM part that was carefully removed from a salvaged vehicle. This provides OEM reliability at a fraction of the cost of a new unit.
Will I need to take my car to a dealer after installation?
No. Because we program the PCM to your VIN before shipping, you will not need a dealer’s scan tool for programming. You will only need to perform the simple key-cycle security relearn procedure detailed in the installation guide.
What tools do I need for the security relearn?
No tools are needed! You only need your vehicle’s key and about 30 minutes of time to cycle the ignition as described in the installation steps. It’s a simple process that anyone can do.
What if my part number is slightly different?
This listing is specifically for part number 09361735. While some part numbers are interchangeable, it is critical to match the part number or confirm compatibility for your specific vehicle before ordering to ensure proper function.