Is Your GM Vehicle Running Rough, Stalling, or Refusing to Start?
As a technician with over two decades of experience under the hood, I’ve seen firsthand the frustration that a failing Powertrain Control Module (PCM) can cause. It’s the brain of your engine, and when it starts to malfunction, it can lead to a cascade of baffling problems that seem to have no logical source. You might be chasing sensor codes or replacing perfectly good parts, only to have the Check Engine Light return. This genuine, used GM PCM, part number 09361735, is the reliable and cost-effective solution you’ve been looking for.
This isn’t just a part pulled from a shelf. We take a quality, road-tested OEM computer and flash it with the latest official GM software updates specifically for your vehicle. By providing your Vehicle Identification Number (VIN) during checkout, you ensure that the module you receive is a perfect match, programmed to communicate flawlessly with your car’s specific systems. This critical step eliminates the need for expensive trips to the dealership for programming, saving you time and money.
Case Study: A Tricky Diagnosis
I remember a 1999 Grand Prix that came into the shop with an intermittent no-start condition and a handful of random communication codes. The owner had already replaced the crank sensor and a few ignition components with no luck. After confirming good power and ground at the PCM connector—a step many people skip—we suspected the computer itself. Swapping in a pre-programmed module like this one had the car running perfectly in under 15 minutes. It’s a reminder that sometimes the most complex problems have a straightforward, central solution: the 1999 Intrigue PCM was the true culprit all along.
Common Signs of a Failing PCM
- âś” Check Engine Light is on with internal processor codes (e.g., P0601, P0605, P0606).
- âś” Engine stalls unexpectedly or struggles to start.
- âś” Noticeable decrease in fuel economy.
- âś” Harsh or erratic automatic transmission shifting.
- âś” The engine misfires or runs poorly with no other apparent cause.
- âś” Loss of communication with the scan tool.
A Straightforward Guide to Installation
Replacing the PCM on these GM vehicles is a job most DIYers can handle with basic tools. This 1999 Intrigue PCM is designed for a direct fit.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system to fully discharge.
- Locate the Module: On most compatible models like the Intrigue, Grand Prix, and Century, the PCM is located in the engine compartment on the driver’s side, often near the air filter box.
- Disconnect the Harnesses: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Avoid wiggling them side-to-side, which can damage the pins.
- Remove the Old PCM: Unbolt the module from its mounting bracket.
- Install the New PCM: Mount your new, pre-programmed PCM, reconnect the electrical harnesses securely, and ensure the locking tabs click into place.
- Final Step: Reconnect the negative battery terminal. The vehicle may need to run for a few minutes to complete its internal relearn procedures.
Will This Fit My Vehicle?
This module is verified to be compatible with a wide range of GM vehicles. Please confirm your model and year from the list below. The critical identifier is part number 09361735.
GRAND PRIX 99-00 (LH engine compartment, check engine/options)
BONNEVILLE 99-00 (LH engine compartment, check engine/options)
CUTLASS 99 (LH center dash, ID 9361735)
INTRIGUE 99 (LH engine compartment)
RIVIERA 99 (RH dash)
SILHOUETTE 99 (LH engine compartment)
VENTURE 99 (LH engine compartment)
IMPALA 00 (LH engine compartment, 3.8L or 3.4L)
MONTANA 99 (LH engine compartment)
CENTURY 99 (LH engine compartment)
PARK AVENUE 99 (LH front engine compartment)
TRANS SPORT 99 (Canada, LH front engine compartment)
LUMINA CAR 99 (LH engine compartment)
REGAL 99 (LH engine compartment)
MALIBU 99 (LH dash, 3.1L)
LESABRE 99-00 (LH front engine compartment)
MONTE CARLO 99-00 (LH engine compartment)
Frequently Asked Questions
Frequently Asked Questions
What do I need to do after I install this PCM?
Because this module arrives programmed to your VIN, no further programming is required. In some cases, a security relearn procedure may be necessary, which can typically be done without special tools by cycling the ignition key. Your vehicle’s service manual will have specific instructions if needed.
Is this a new part?
No, this is a high-quality, tested, and inspected used OEM part sourced from a salvaged vehicle. This allows us to provide a reliable, genuine GM component at an excellent value.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) contains critical information about your car’s engine, transmission, and factory options. We use it to load the exact, correct GM software onto the PCM, ensuring perfect compatibility and function right out of the box.
How can I be sure my old PCM is the problem?
The best way is with a professional diagnosis. However, common indicators include internal fault codes (like P0601), multiple unrelated sensor codes appearing at once, or classic symptoms like stalling and no-starts after you’ve ruled out more common issues like batteries, alternators, and fuel pumps.
Do I need to send my old PCM back?
No core charge or return is required for this part. You can keep or responsibly dispose of your old module.