Is Your 1996 S10, S15, or Sonoma Running Rough?
If you’re dealing with frustrating engine problems like stalling at stoplights, a persistent check engine light, or a truck that just won’t start, a failing Powertrain Control Module (PCM) is often the culprit. In my 20+ years as a technician, I’ve seen how a faulty computer can turn a reliable workhorse into a source of constant headaches. Don’t keep throwing parts at the problem. Get to the heart of the issue with a dependable, correctly programmed engine computer.
Expert Real-World Scenario: “A customer’s ’96 Sonoma with the 2.2L engine came into my shop last month. It had an intermittent no-start condition that two other shops couldn’t solve. It would crank but never fire, and then an hour later, it would start perfectly. After checking fuel pressure and spark, which were fine when it *was* running, we focused on the computer. We found that the PCM’s injector driver circuit was failing intermittently when it got warm. Replacing the module with a properly programmed unit solved the problem instantly. This is a classic failure mode for these older GM computers.”
The Direct Solution: A Pre-Programmed 1996 S10 PCM
This isn’t just a replacement part; it’s a complete solution. We take a quality-tested PCM and flash it with the latest official GM software updates, specifically calibrated to your vehicle’s unique VIN. This critical step ensures that all engine, transmission, and emissions parameters are set correctly for your truck, restoring its original performance and reliability.
Common Symptoms of a Failing 1996 S10 PCM:
- โ Persistent Check Engine Light (CEL) with various codes
- โ Engine stalling or cutting out while driving
- โ No-start or hard-start conditions
- โ Rough or erratic idle
- โ Poor fuel economy and loss of power
- โ Harsh or incorrect automatic transmission shifting
Plug-and-Play Installation: No Dealer Visit Required
One of the biggest benefits of our service is the pre-programming. This means you can avoid the time and expense of having a dealership or specialized shop program the module. You can install this yourself with basic hand tools right in your driveway.
- Safety First: Disconnect the negative terminal from your truck’s battery.
- Locate the PCM: On most 1996 S10/Sonoma models, the PCM is located on the passenger side of the engine bay, near the firewall or fender.
- Disconnect Connectors: Carefully unclip the wiring harness connectors from the old module. Inspect the pins for any corrosion or damage. If you see any green or white residue, clean the harness connectors thoroughly with an electrical contact cleaner before proceeding.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed PCM into place.
- Reconnect Everything: Firmly plug the wiring harnesses into the new module until they click. Reconnect the negative battery terminal.
- Final Step: Your vehicle may require a security relearn procedure, which is a simple process you can do yourself. Instructions are widely available online or in your service manual.
Guaranteed Compatibility
This Electronic Control Module is a direct replacement for part numbers 16215830 and 16231851. It is guaranteed to fit and function correctly in the following 1996 models:
- S10/S15/SONOMA – with 2.2L (4-134) Engine
- SKYLARK – with 2.4L (4-146) Engine
- SUNFIRE
- ACHIEVA – with 2.4L (4-146) Engine
- BERETTA – with 2.2L (4-134) Engine
- CAVALIER
- CIERA – with 2.2L (4-134) Engine
- GRAND AM – with 2.4L (4-146) Engine
- CORSICA – with 2.2L (4-134) Engine
- CENTURY – with 2.2L (4-134) Engine
IMPORTANT: After purchase, please send us your vehicle’s 17-digit VIN. We cannot ship your order until we have this information to program the module correctly.