Is Your GM Vehicle Stalling, Running Rough, or Refusing to Start?
If you’re dealing with frustrating engine problems in your late-90s GM car or truck, a failing Powertrain Control Module (PCM) is often the hidden culprit. After more than two decades on the road, the original electronics can degrade, leading to a host of issues that can be maddening to diagnose. Symptoms like intermittent stalling, poor fuel economy, a persistent check engine light, or a complete no-start condition can point directly to a faulty engine computer.
This isn’t just a replacement part; it’s a direct solution. We provide a reliable PCM that is meticulously programmed with the latest GM software updates specifically for your vehicle. By providing your Vehicle Identification Number (VIN) at checkout, you ensure that the module you receive is perfectly matched to your car’s specific configuration, eliminating the need for an expensive trip to the dealership for programming.
Common Symptoms of a Failing GM PCM:
- โ No communication with the scan tool
- โ Engine cranks but will not start
- โ Random stalling or cutting out while driving
- โ Harsh or erratic automatic transmission shifting
- โ Decreased fuel mileage and poor engine performance
- โ Check Engine Light is on with various communication or sensor codes
Expert Pro Tip from 20+ Years on the Bench: Before you condemn your old PCM, take a moment to inspect the wiring harness connectors. On these GM vehicles, especially the S10/Sonoma and Cavalier/Sunfire where the module is in the engine bay, the plastic connectors can become brittle. I’ve seen cases where a tiny crack in the connector housing allowed moisture in, causing corrosion on the pins and mimicking a complete PCM failure. A quick spray of electronics cleaner and a gentle scrub with a small brush can sometimes save you a lot of diagnostic headaches. Always check the simple things first!
Why Choose Our 1997-1999 Grand Am PCM Solution?
Getting your car back to factory-spec operation is our priority. We handle the complex programming so you can focus on the straightforward installation. This module is a direct replacement for service numbers 16228016, 8162280160, and 16245305, providing broad compatibility across a range of popular vehicles. Once installed, your vehicle will regain proper control over its fuel delivery, ignition timing, and transmission functions.
Plug-and-Play Installation: No Dealer Visit Required
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the PCM: The location varies by model. For example, on a ’99 Grand Am, it’s behind the left-hand center of the dash. On an S10 pickup, it’s on the right-hand side of the engine compartment.
- Disconnect Connectors: Carefully unlatch and remove the wiring harness connectors from the old module.
- Swap the Module: Unbolt and remove the old PCM. Mount the new, pre-programmed module in its place.
- Reconnect and Secure: Firmly plug the wiring harness connectors into the new PCM and re-latch them. Reconnect the negative battery terminal.
- Security Relearn (If Necessary): Some vehicles may require a simple key-cycle security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. Instructions are readily available online for your specific model.
Guaranteed Fitment for Your Vehicle
This Electronic Control Module is a confirmed fit for the following vehicles with the specified options. Please verify your model and engine to ensure compatibility.
- ACHIEVA: 1997-1998 (2.4L)
- CAVALIER: 1997-1999
- GRAND AM: 1997-1998 (2.4L)
- GRAND AM: 1999 (2.4L, ID 16228016)
- ISUZU HOMBRE: 1996
- ISUZU HOMBRE: 1997-1998 (2.2L)
- ISUZU HOMBRE: 1999-2000 (2.2L)
- MALIBU: 1997-1998 (2.4L)
- MALIBU: 1999 (2.4L)
- S10/S15/SONOMA: 1997-1998 (2.2L)
- S10/S15/SONOMA: 1999 (2.2L)
- S10/S15/SONOMA: 2000 (2.2L, 8th VIN digit ‘4’)
- SKYLARK: 1997-1998 (2.4L)
- SUNFIRE: 1997-1999