Restore Your Vehicle’s Performance and Reliability
Are you battling frustrating issues like random stalling, a persistent check engine light, or a vehicle that just won’t start? A failing Powertrain Control Module (PCM) is often the culprit behind these headaches. As the brain of your vehicle’s engine and transmission, when it falters, everything else does too. This isn’t just an inconvenience; it’s a reliability issue that can leave you stranded. I’ve spent two decades diagnosing these exact problems, and I can tell you that a correctly functioning PCM is critical for your engine’s health, fuel economy, and smooth operation.
This replacement Powertrain Control Module is the definitive solution for your 1998-2000 Bravada PCM and a wide range of other GM trucks and vans. We take the guesswork and extra cost out of the repair. Simply provide us with your vehicle’s VIN after purchase, and our technicians will flash the module with the latest GM-certified software specific to your vehicle. This means no expensive trips to the dealership for programming—it arrives at your door ready for a straightforward installation.
Case Study: The Ghost in the Machine
I remember a 1999 GMC Jimmy that came into the shop with a problem that had stumped two other mechanics. The owner complained of intermittent stalling at stoplights and occasional harsh shifting. There were no consistent trouble codes, just a history of random communication errors. After checking all the usual suspects—wiring, sensors, fuel pressure—I hooked up my scope to the PCM’s injector driver circuits. Sure enough, under load, one of the drivers was intermittently dropping out due to internal heat soak. A new, properly programmed PCM fixed it instantly. The owner was thrilled to have his reliable truck back. This is a classic failure mode for these units, and a replacement like this is the only correct fix.
Is Your GM Truck or SUV Showing These Signs?
A faulty PCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your engine computer needs attention:
- ✔ Check Engine Light is on with codes like P0601, P0604, or P0605 (Internal Module Failure).
- ✔ Vehicle has a no-start or hard-start condition.
- ✔ Rough or unstable idling.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Engine stalling or cutting out unexpectedly.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Communication errors with diagnostic scan tools.
A Straightforward Guide to Your PCM Installation
Replacing the PCM on these vehicles is a job most DIYers can handle with basic tools. Follow these steps for a successful installation.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes for the system to fully discharge.
- Locate the Module: On your 1998-2000 Bravada, the PCM is typically found in the engine compartment on the right-hand (passenger) side. On other models like Express vans, it may be in the rear engine compartment. Refer to your owner’s manual if unsure.
- Disconnect the Connectors: Carefully unlatch and remove the electrical wiring harnesses from the old PCM. Inspect the connectors for any corrosion or bent pins.
- Remove the Old PCM: Unbolt the module from its mounting bracket. There are usually a few bolts holding it in place.
- Install the New PCM: Mount your new, pre-programmed module onto the bracket and securely fasten the bolts.
- Reconnect Everything: Plug the wiring harnesses back into the new PCM, ensuring they click securely into place. Reconnect the negative battery terminal.
- Final Check: Some vehicles may require a security relearn procedure, which typically involves cycling the key. Start the vehicle and let it run for a few minutes to confirm the repair is complete.
Verified Compatibility for Your Vehicle
This module is a direct-fit replacement for a wide array of GM vehicles. It is compatible with part numbers 16263494, 16265035, 8162634940, 218-11787, and 21811787. Please verify your vehicle is on the list below for guaranteed compatibility.
BLAZER S10/JIMMY S15 98-00 (4.3L)
BRAVADA 98-00 (4.3L)
CHEVROLET 1500 PICKUP 99 (5.0L, 5.7L)
CHEVROLET 2500 PICKUP 99-00 (Gasoline)
CHEVROLET 3500 PICKUP 99-00 (Gasoline)
ENVOY 98-00
ESCALADE 99-00
EXPRESS 1500 VAN 99-02
EXPRESS 2500 VAN 99-02 (Gasoline)
EXPRESS 3500 VAN 99-02 (Gasoline)
GMC 1500 PICKUP 99 (5.0L, 5.7L)
GMC 2500 PICKUP 99-00 (Gasoline)
GMC 3500 PICKUP 99-00 (Gasoline)
ISUZU HOMBRE 98-00 (4.3L)
S10/S15/SONOMA 98-00 (4.3L)
SAFARI (GMC) 99-01
SAVANA 1500 VAN 99-02
SAVANA 2500 VAN 99-02 (Gasoline)
SAVANA 3500 VAN 99-02 (Gasoline)
SIERRA 1500 PICKUP 99-00 (6 cyl)
SILVERADO 1500 PICKUP 99-00 (6 cyl)
SUBURBAN 1500 99 (Gasoline)
SUBURBAN 2500 99 (Gasoline)
TAHOE 99-00 (Classic style)
YUKON 99-00 (Denali)
Frequently Asked Questions
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your order until we receive it.
Do I need to do anything else after installation?
In most cases, no. The module comes ready to install. Some vehicles may require a simple security relearn procedure (often called a CASE relearn), which can be done without special tools. Instructions can easily be found online for your specific model.
Is this a guaranteed fix for my vehicle’s problems?
This PCM will resolve issues directly caused by a faulty module. While it fixes the vast majority of the symptoms listed, it’s always essential to ensure your vehicle has been properly diagnosed. This part will not fix problems related to bad sensors or wiring.
What if my original part number is slightly different?
This module is a compatible replacement for several part numbers, including 16263494 and 8162634940. As long as your vehicle, year, and engine match our compatibility list, this module will function correctly once programmed to your VIN.
How long does the programming process take?
We typically program and ship your module within one business day of receiving your VIN, ensuring you get your part as quickly as possible.