VIN Programmed 1998 Trans Sport PCM 9357440 | Engine Control Module

Is Your Minivan or Sedan Running Rough? Restore Its Reliability.

As a technician with over two decades of experience under the hood, I’ve seen firsthand how a failing Powertrain Control Module (PCM) can turn a dependable vehicle into a source of constant frustration. If your 1998 Pontiac Trans Sport, or another compatible GM vehicle, is suffering from a persistent Check Engine Light, erratic shifting, stalling, or a no-start condition, the engine’s computer is often the culprit. This isn’t just a part; it’s the central command center for your engine and transmission. When it fails, everything from fuel delivery to spark timing is compromised.

This replacement Powertrain Control Module, part number 9357440, is the definitive solution. We take the guesswork and extra cost out of the repair by programming the module specifically for your vehicle using your VIN. This means it arrives at your door loaded with the latest factory software from GM, ready for a straightforward installation. You get a reliable fix that restores performance and drivability without the expensive trip to a dealership for programming.

Common Signs of a Failing Engine Computer

• ✔ Persistent and unexplained Check Engine Light (CEL).
• ✔ Engine stalling, sputtering, or hesitating during acceleration.
• ✔ Vehicle refuses to start, even with a good battery and starter.
• ✔ Noticeably poor fuel economy.
• ✔ Harsh or erratic automatic transmission shifting.
• ✔ Failed emissions inspection.
• ✔ Stored Diagnostic Trouble Codes (DTCs) such as P0601 (Internal Memory Error) or P0606 (PCM Processor Fault).

A Straightforward Guide to Installation

1. ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental reconnection.
2. ✔ Locate the PCM: On most of these vehicles, like the 1998 Pontiac Trans Sport, the PCM is located in the engine compartment, often inside the air filter housing or mounted to the firewall. Consult a repair manual for your specific model if you’re unsure.
3. ✔ Disconnect Connectors: Carefully unlatch and remove the electrical harness connectors from the old module. These connectors have locking tabs that must be released to prevent damage.
4. ✔ Remove the Old Module: Unbolt the old PCM from its mounting bracket. Keep the hardware, as you may need to reuse it.
5. ✔ Install the New Module: Mount your new, pre-programmed PCM securely in place. Reconnect the electrical harnesses, ensuring they click firmly into place.
6. ✔ Reconnect Battery: Reattach the negative battery terminal.
7. ✔ Perform Security Relearn (If Necessary): Some GM vehicles of this era require a simple key-cycle security relearn procedure. Typically, this involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds, and repeating this two more times. Your vehicle’s service manual will have the exact steps.

Verified Vehicle Compatibility

This module is a direct replacement for service numbers 09356741, 16236757, 9356741, 9357034, 9357440, and 9366314. It is guaranteed to fit the following models. Please match your part number or contact us with your VIN to confirm.

Frequently Asked Questions