Is Your 1999-2000 GM Truck Running Rough or Not Starting at All?
If you’re dealing with baffling issues on your Silverado, Sierra, or other GM truck from this era, your Powertrain Control Module (PCM) is a likely culprit. As a tech with over two decades of experience, I’ve seen firsthand how a failing PCM can create a diagnostic nightmare. You might be chasing what seems like a fuel pump issue, a bad sensor, or a transmission problem, when the real issue lies with the vehicle’s central computer.
Common Symptoms of a Failing GM PCM
A faulty PCM doesn’t always fail completely. Often, it begins with intermittent problems that can leave you stranded. Look out for:
- ✔ No-start or hard-start conditions, especially when warm.
- ✔ The engine cranks but won’t fire up.
- ✔ A persistent Check Engine Light with communication error codes (like P0601, P0606) or random sensor codes.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Poor fuel economy and a noticeable loss of power.
- ✔ The security or anti-theft light staying on, preventing the engine from starting.
A Technician’s Real-World Story
“A customer’s 2000 Silverado 2500 came in on a tow truck last week with these exact symptoms. It would crank all day but never start. The owner had already replaced the fuel pump and the crankshaft position sensor, but nothing worked. When I connected my scan tool, I couldn’t communicate with the PCM at all. After verifying power and ground to the module, it was clear the PCM itself had failed internally. This is a very common failure point on these trucks; the location under the battery tray exposes them to potential corrosion and years of vibration and heat cycles simply take their toll. We installed one of our pre-programmed units, performed the security relearn, and the truck fired right up and ran perfectly.”
The Solution: A Reliable, Pre-Programmed PCM
Don’t waste time and money at the dealership. This Powertrain Control Module is the reliable, cost-effective solution to get your truck back in top form. We take all the guesswork out of the process. When you order, we use your vehicle’s VIN to flash the module with the latest, most stable software updates directly from GM. This ensures your vehicle operates exactly as the manufacturer intended, often resolving drivability quirks that existed even when the truck was new.
Why Choose Our Programmed PCM?
- ✔ VIN-Programmed for Your Vehicle: We handle the complex programming for you. Once you receive the part, installation is straightforward.
- ✔ Updated GM Software: Your module arrives with the newest calibrations for improved engine performance, transmission shifting, and fuel efficiency.
- ✔ Simple Installation Process: After installing the module, you will need to perform a simple security relearn procedure (often called the Passlock or VATS relearn). This procedure takes about 30 minutes and does not require any special tools. We can provide instructions for this.
- ✔ Direct Part Number Match: This module is a direct replacement for service numbers 19109040, 09354896, and 9354896.
Guaranteed Fitment
This Electronic Control Module is guaranteed to fit the following vehicles. Please verify the location on your specific model, as it can vary.
- ✔ CORVETTE 1999-2000 (RH engine compartment)
- ✔ CAMARO 1999-2002 (5.7L, behind RH strut tower)
- ✔ FIREBIRD 1999-2002 (5.7L, behind RH strut tower)
- ✔ SIERRA 1500 PICKUP 1999-2000 (8 cylinder, LH front under battery)
- ✔ SIERRA 2500 PICKUP 1999-2000 (LH front under battery)
- ✔ SILVERADO 1500 PICKUP 1999-2000 (8 cylinder, LH front under battery)
- ✔ SILVERADO 2500 PICKUP 1999-2000 (LH front under battery)
- ✔ SUBURBAN 1500/2500 2000 (LH front under battery)
- ✔ TAHOE 2000 (Silverado style, LH front below battery)
- ✔ YUKON 2000 (exc. Denali, LH front under battery)
- ✔ YUKON XL 1500/2500 2000 (LH front under battery)
IMPORTANT: After you complete your 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.