Get Your Workhorse Van Back on the Road
Is your 1998 or 1999 GMC Savana 1500 van suddenly unreliable? If you’re dealing with frustrating issues like a no-start condition, intermittent stalling, erratic transmission shifting, or a persistent Check Engine Light, the problem often points directly to a failing Powertrain Control Module (PCM). As the central computer of your vehicle, a faulty PCM can cripple your van’s performance and leave you stranded. This isn’t just an inconvenience; for a work van, it’s lost time and money. We offer a dependable and straightforward solution: a tested, used PCM programmed with the latest GM software specifically for your vehicle’s VIN.
A Technician’s Notebook: The Case of the Confused Cargo Van
I remember a 1999 Express vanâa sibling to the Savanaâthat came into my shop with a laundry list of bizarre symptoms. The owner, a plumber, said it would randomly refuse to shift out of first gear, and other days it would stall at traffic lights. He’d already replaced the throttle position sensor and a speed sensor with no luck. The scanner showed a P0601 (Internal Control Module Memory Check Sum Error) and a few transmission communication codes. Instead of a wild goose chase, we went straight for the brain. A failing PCM was scrambling signals. We installed a VIN-programmed module just like this one. The security relearn took about 30 minutes, and the van ran perfectly. It was a simple, effective fix that saved the owner from hundreds more in diagnostic fees and parts.
Common Signs of a Failing GM PCM
A failing computer can cause a wide range of problems that might seem unrelated. If your vehicle is experiencing any of the following, a faulty PCM is a likely cause. This 1998-1999 Savana 1500 PCM is the correct component to resolve these issues.
- â Vehicle will not start or is very difficult to start.
- â Check Engine Light is on with codes like P0601, P0605, or other communication errors.
- â Harsh, erratic, or delayed transmission shifting.
- â A noticeable drop in fuel economy.
- â Engine stalling, sputtering, or misfiring for no apparent reason.
- â Failure to pass an emissions inspection.
A Straightforward Guide to Installation
Installing your replacement PCM is a manageable job for a DIYer with basic tools. Our pre-programming service eliminates the most complex step, saving you a trip to the dealer. Follow these steps carefully.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental reconnection.
- Locate the PCM: On the 1998-1999 Savana Van, the PCM is typically found in the engine compartment, on the left-hand (driver’s side) rear area. It’s a metal box with several large multi-pin connectors.
- Disconnect the Module: Carefully release the locking tabs on each electrical connector and pull them straight out. They are often color-coded. Then, unbolt the module from its mounting bracket.
- Install the New PCM: Mount the replacement module securely onto the bracket. Reconnect the electrical connectors, ensuring they click firmly into place. Do not force them.
- Reconnect the Battery: Reattach the negative battery terminal and tighten it securely.
- Perform Security Relearn (CRITICAL): You must perform the GM Passlock/VATS security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds, and repeating this cycle three times. Your vehicle will not start until this is completed.
Will This Fit My Vehicle?
This module is a direct replacement for several part numbers and fits a wide range of GM trucks, vans, and SUVs. Please verify your vehicle is on this list and that the service ID number on your original module matches 09355699 or one of the other compatible part numbers listed below.
Fitment includes, but is not limited to:
ASTRO 98, BLAZER S10/JIMMY S15 98, BRAVADA 98, CHEVROLET 1500/2500/3500 PICKUP 98-99, ENVOY 98, ESCALADE 99, EXPRESS/SAVANA 1500/2500/3500 VAN 98-99, GMC 1500/2500/3500 PICKUP 98-99, ISUZU HOMBRE 98, S10/S15/SONOMA 98, SAFARI (GMC) 98, SUBURBAN 1500/2500 98-99, TAHOE/YUKON 98-99.
Frequently Asked Questions
Do I need to get this programmed by a dealer?
Do I need to get this programmed by a dealer?
No. We handle the programming for you before we ship the part. Simply provide us with your vehicle’s 17-digit VIN during checkout, and we will flash the module with the latest GM software for your specific vehicle. This makes the installation process much simpler.
What is the security relearn procedure?
Do I need to get this programmed by a dealer?
No. We handle the programming for you before we ship the part. Simply provide us with your vehicle’s 17-digit VIN during checkout, and we will flash the module with the latest GM software for your specific vehicle. This makes the installation process much simpler.
Is this a new part?
Do I need to get this programmed by a dealer?
No. We handle the programming for you before we ship the part. Simply provide us with your vehicle’s 17-digit VIN during checkout, and we will flash the module with the latest GM software for your specific vehicle. This makes the installation process much simpler.
Will this 1998-1999 Savana 1500 PCM fix my check engine light?
Do I need to get this programmed by a dealer?
No. We handle the programming for you before we ship the part. Simply provide us with your vehicle’s 17-digit VIN during checkout, and we will flash the module with the latest GM software for your specific vehicle. This makes the installation process much simpler.
How do I find my original part number?
Do I need to get this programmed by a dealer?
No. We handle the programming for you before we ship the part. Simply provide us with your vehicle’s 17-digit VIN during checkout, and we will flash the module with the latest GM software for your specific vehicle. This makes the installation process much simpler.