Restore Your GM Van’s Reliability and Performance
Is your 1999-2002 Savana 1500 Van running rough, shifting erratically, or constantly throwing a check engine light? A failing Powertrain Control Module (PCM) is often the culprit. As the central computer of your vehicle, the PCM controls everything from fuel mixture and ignition timing to transmission shift points. When it starts to fail, it can cause a cascade of frustrating and hard-to-diagnose issues. This isn’t just an inconvenience; it affects your van’s fuel economy, power, and overall dependability.
This is a direct-fit replacement Savana 1500 PCM, professionally programmed with the latest GM software updates specifically for your vehicle. Forget about expensive dealership visits and additional programming fees. We handle the complex part for you. Simply provide your vehicle’s VIN during checkout, and we’ll send you a module that’s ready for a straightforward installation, getting your workhorse back on the road where it belongs.
From the Diagnostic Bay
I remember a 2001 Savana 2500 from a local plumbing company that came into my shop. The driver complained of intermittent stalling at stoplights and a weird, delayed shift between 2nd and 3rd gear. They’d already replaced the throttle position sensor and cleaned the MAF at another shop, but the problem persisted with no consistent trouble codes. After hooking up my scan tool and monitoring live data, I noticed the short-term fuel trims were going haywire right before a stall. This pointed to an internal processing issue. We swapped in one of these pre-programmed PCMs, and it was a night-and-day difference. The van ran smoothly, shifted crisply, and the stalling issue was completely gone. It’s a classic case where the ‘brain’ itself was the problem, and a reliable, correctly programmed module was the only real fix.
Is Your GM Van or Truck Showing These Signs?
A failing engine computer can manifest in numerous ways. If you’re experiencing any of the following, a faulty PCM could be the reason:
- ✔ Persistent Check Engine Light (CEL)
- ✔ Stalling, stumbling, or rough idling
- ✔ Poor fuel mileage
- ✔ Harsh or erratic automatic transmission shifting
- ✔ The engine cranks but refuses to start
- ✔ Failure to pass an emissions/smog test
- ✔ Diagnostic Trouble Codes (DTCs) such as P0601 (Internal Memory Error) or P0606 (PCM Processor Fault)
A Straightforward Guide to Installation
Installing your new Savana 1500 PCM is a manageable job for a DIYer with basic tools. Follow these steps carefully for a successful replacement.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow the system to fully discharge.
- Locate the Old PCM: On most Savana and Express vans, the PCM is located in the engine compartment, on the driver’s side, often near the rear of the engine bay. On some trucks and SUVs, it may be under the battery tray or on the fender.
- Disconnect the Wiring: Carefully unclip and remove the electrical connectors from the old module. These connectors have locking tabs; be gentle to avoid breaking them.
- Remove the Module: Unbolt the old PCM from its mounting bracket. Keep the hardware, as you may need to reuse it.
- Install the New PCM: Mount your new, pre-programmed PCM onto the bracket and secure it. Reconnect the wiring harnesses, ensuring they click firmly into place.
- Reconnect the Battery: Re-attach the negative battery terminal.
- Perform Security Relearn (If Necessary): On some GM vehicles, you may need to perform a simple key-cycle security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. We include instructions if this step is required for your vehicle.
Verified Vehicle Compatibility
This module is a guaranteed fit for a wide range of GM trucks, vans, and SUVs. Please verify your vehicle and part number against this list. This unit is a direct replacement for part numbers: 16263494, 16265035, 8162634940, 218-11787, 21811787.
Chevrolet
- ✔ ASTRO 99-01
- ✔ BLAZER S10 98-00
- ✔ C1500/2500/3500 PICKUP 99-00
- ✔ EXPRESS 1500/2500/3500 VAN 99-02
- ✔ S10 PICKUP 98-00
- ✔ SILVERADO 1500 PICKUP 99-00
- ✔ SUBURBAN 1500/2500 99
- ✔ TAHOE 99-00
GMC
- ✔ C1500/2500/3500 PICKUP 99-00
- ✔ ENVOY 98-00
- ✔ JIMMY S15 98-00
- ✔ SAFARI 99-01
- ✔ SAVANA 1500/2500/3500 VAN 99-02
- ✔ SIERRA 1500 PICKUP 99-00
- ✔ SONOMA 98-00
- ✔ YUKON 99-00
Cadillac
- ✔ ESCALADE 99-00
Oldsmobile
- ✔ BRAVADA 98-00
Isuzu
- ✔ HOMBRE 98-00
Note: This is a partial list. Please use the compatibility checker or contact us with your VIN to confirm fitment for your specific vehicle and options.
Frequently Asked Questions
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. We program the module to your vehicle’s specific VIN before shipping. It arrives ready to install, saving you time and money.
What information do you need from me?
After you place your order, you will need to provide us with your 17-digit Vehicle Identification Number (VIN). This is essential for correct programming.
Is this a difficult part to install myself?
For most DIYers with basic hand tools, this is a straightforward replacement. It typically involves disconnecting the battery, unplugging the old module, unbolting it, and reversing the process with the new one.
Will this fix my check engine light?
If the check engine light is caused by a failing PCM (e.g., code P0601), then yes, this part will resolve the issue. It’s crucial to have your vehicle properly diagnosed to ensure the PCM is the root cause.
What is the difference between a PCM and an ECM?
The terms are often used interchangeably. PCM (Powertrain Control Module) typically controls both the engine and transmission, while an ECM (Engine Control Module) may only control the engine. For these GM vehicles, this module functions as the PCM.