Is your Pontiac Grand Prix suffering from harsh, erratic shifting or stuck in limp mode? A failing Transmission Control Module (TCM) can disrupt your daily drive and cause serious concern. This pre-programmed GM T42 TCM is the direct-fit, plug-and-play solution to restore the smooth, reliable performance you expect from your vehicle. Eliminate the guesswork and expensive dealership trips with a module that arrives ready to install right out of the box.
Common Symptoms & Your Solution
A faulty TCM can manifest in several frustrating ways, often triggering dashboard warning lights and putting your car into a protective, low-power state. If you’re experiencing any of the following, this module is the definitive solution:
- Harsh or Delayed Shifting: Abrupt, clunky gear changes or a noticeable lag when the transmission shifts.
- Stuck in Gear / Limp Mode: The vehicle refuses to shift out of a single gear (often 2nd or 3rd) to prevent further damage.
- Check Engine Light: Diagnostic Trouble Codes (DTCs) such as P0700 (Transmission Control System Malfunction) or various solenoid-specific codes (e.g., P0750, P0751) are stored.
- Poor Performance: A significant drop in fuel economy, sluggish acceleration, or a complete failure to upshift or downshift.
This module is engineered to resolve these issues by restoring precise electronic control over your transmission. By installing our pre-programmed 2006-2008 Grand Prix Transmission Control Module, you are directly addressing the root cause of these symptoms and preventing future communication errors between your engine and transmission.
Key Features & Tangible Benefits
- âś” 100% VIN Programmed: We program the module to your car’s specific Vehicle Identification Number before shipping. This ensures perfect communication with your car’s systems for optimal shift points and performance, with no extra programming required.
- âś” Restored Drivability: Eliminates harsh shifting and gear-hunting, providing the smooth and predictable driving experience you expect from your Grand Prix.
- âś” Cost-Effective Solution: Avoid the high costs and scheduling hassles of a dealership visit. This is a straightforward fix that a competent DIYer or any trusted mechanic can perform quickly.
- âś” Built to OEM Standards: Engineered for reliability and durability, ensuring it meets or exceeds original equipment specifications for a long service life.
- âś” This unit is backed by our one-year replacement warranty.
From the Mechanic’s Bay: We see these T42 modules frequently. The biggest mistake people make is buying a used, unprogrammed unit from a junkyard. It might be the same part number, but without being programmed to the specific VIN, it will never communicate correctly with the vehicle’s other computers. This leads to the same shifting problems, or worse. Our VIN programming service takes that critical failure point out of the equation, giving you a part that works correctly the first time, every time. It’s the difference between a lasting repair and a frustrating comeback.
Don’t let a faulty TCM sideline your vehicle. This high-quality 2006-2008 Grand Prix Transmission Control Module is the most reliable and efficient way to get your car back on the road with confidence. Order today and experience the difference a properly functioning transmission makes.
Frequently Asked Questions
What does “VIN Programmed” actually mean?
It means we load your vehicle’s unique 17-digit Vehicle Identification Number (VIN) and the latest GM software onto the module before it ships. This allows it to communicate perfectly with your car’s Engine Control Module (ECM) and other systems, just like the original part did. It makes the installation plug-and-play.
Is this a difficult part to install on my Grand Prix?
For most 2006-2008 Grand Prix models, the TCM is located in the engine bay, attached to the lower air cleaner housing. It is a straightforward job for someone with basic mechanical skills, typically taking less than 30 minutes. Simply disconnect the battery, unplug the electrical connectors, unbolt the old module, and install the new one.
Do I need to send my old TCM back (core charge)?
No, there is no core charge for this part. You can keep your old module, which saves you the time and expense of return shipping.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause of a P0700, it’s always wise to have the specific secondary codes read by a scanner to confirm the diagnosis. This part directly fixes failures within the module itself, which are a very common cause.
How can I be sure this is the exact part I need?
This module, part number 24256960, is the correct fit for the 2006-2008 Pontiac Grand Prix. It also interchanges with several other part numbers listed in the compatibility data. Providing your VIN at checkout guarantees we program it correctly for your specific vehicle.