Is Your Savana 1500 Running Rough?
If you’re dealing with frustrating issues like a persistent check engine light, unexplained stalling, poor fuel mileage, or a no-start condition, a failing Powertrain Control Module (PCM) is often the culprit. In my 20+ years of diagnostics, I’ve seen these symptoms countless times on late-90s GM vans and trucks. The PCM is the brain of your engine, and when it starts to fail, it can cause a cascade of problems that are difficult to pin down. Don’t let a faulty computer keep your reliable workhorse off the road.
The Direct-Fit, Programmed Solution
This is a dependable, used OEM Powertrain Control Module that offers a straightforward and cost-effective fix. We take the guesswork and high costs out of the repair by programming the module specifically for your vehicle before it ever leaves our shop. Just provide us with your vehicle’s VIN (Vehicle Identification Number) during checkout, and our technicians will flash it with the latest official GM software updates. This ensures it communicates perfectly with your engine, transmission, and all other systems right out of the box.
- โ VIN Programmed: Arrives flashed with the latest GM software matched to your exact 1998-1999 Savana 1500.
- โ Plug & Play Installation: No expensive trip to the dealership for programming is required. This is a direct replacement.
- โ Solves Common Issues: A reliable fix for check engine lights, harsh shifting, stalling, and no-start problems related to the factory PCM.
- โ Guaranteed Compatibility: This unit replaces a wide range of part numbers, including 09355699, 16266645, 16250279, and more.
- โ Cost-Effective Repair: Get the functionality of a new computer without the high dealership price tag by using a quality-tested, salvaged part.
Expert Pro Tip: Check Your Grounds Before Replacing
Before you swap out your PCM, take 10 minutes to check the main engine-to-chassis ground straps. On these GM vans, they are notorious for corroding, especially near the battery tray and on the back of the cylinder head. A poor ground can cause erratic voltage, making a good PCM behave like a faulty one. I’ve saved customers hundreds of dollars in my shop with this simple check. A quick cleaning with a wire brush can sometimes solve the entire problem.
Easy Installation for Your 1998-1999 Savana 1500 PCM
Installing your new computer is a job most DIYers can handle in under an hour with basic tools. Follow these steps to get your van running smoothly again.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the PCM: On the 1998-1999 Savana 1500, the PCM is typically found in the engine compartment, on the left-hand (driver’s) side, near the firewall.
- Disconnect Connectors: Carefully unclip and remove the electrical wiring harnesses from the old module. Inspect the pins for any signs of corrosion or damage.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket and remove it from the vehicle.
- Install the New Module: Bolt your new, pre-programmed PCM into the mounting bracket.
- Reconnect Everything: Securely plug the wiring harnesses back into the new module until they click into place. Reconnect the negative battery terminal.
- Security Relearn: Your vehicle may require a simple security relearn procedure to recognize the new PCM. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating two more times before starting the engine. This allows the anti-theft system to sync with the new computer.
Guaranteed Fitment
This Electronic Control Module is a direct replacement for units with Service Number (SERV. NO.) 16266645 or ID 9355699. It is compatible with a wide array of GM trucks and vans from this era. Please verify the part number on your original module to ensure a perfect match.