Fix Your Buick’s Shifting Problems for Good
Is your 2006-2007 Buick Rendezvous shifting erratically, getting stuck in gear, or throwing transmission codes? A failing Transmission Control Module (TCM) is one of the most common culprits behind these frustrating and potentially unsafe issues. As the electronic brain of your automatic transmission, the TCM dictates every gear change. When it fails, drivability suffers. This is a direct-replacement, OEM-quality T42 TCM, pre-programmed to your vehicle’s specific VIN, offering a permanent solution that restores the smooth, reliable performance you expect from your Buick.
Forget about expensive diagnostic fees and programming charges at the dealership. We handle the programming for you. Simply provide your VIN during checkout, and we’ll flash the module with the latest GM software updates. This ensures it communicates perfectly with your vehicle’s systems right out of the box. This is the most effective way to resolve common issues and get your Rendezvous back on the road with confidence.
A Technician’s Notebook
I remember a 2007 Rendezvous that came into the shop with a classic complaint: ‘It just doesn’t know what gear to be in.’ The customer was frustrated with harsh upshifts and a scary delay when accelerating from a stop. The scan tool showed a generic P0700 transmission fault code, but no specific solenoid codes. After checking the fluid and wiring harness, everything looked fine. Based on my experience with these GM platforms, the intermittent and unpredictable nature of the problem pointed directly to the TCM. The internal logic was failing under load. We installed a VIN-programmed 2006-2007 Rendezvous TCM, and the change was immediate. The shifts were crisp and predictable. It’s a reminder that sometimes the most complex-feeling problems have a straightforward electronic solution.
Is Your Rendezvous Showing These Signs?
A faulty TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution.
- ✔ Harsh, slamming, or delayed gear shifts.
- ✔ Vehicle is stuck in ‘limp mode’ (usually 2nd or 3rd gear).
- ✔ Check Engine Light or Transmission Warning light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750-P0758, or other solenoid-related faults.
- ✔ The transmission refuses to upshift or downshift properly.
- ✔ A noticeable decrease in fuel economy.
- ✔ Intermittent loss of communication with the scan tool.
A Straightforward Guide to Installation
For the DIY mechanic, this is a very manageable job. On the 2006-2007 Buick Rendezvous, the TCM is conveniently located right under the air cleaner box, making access simple. The entire process typically takes less than 30 minutes.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and to help reset the onboard systems.
- Locate the Module: Remove the engine cover and the air cleaner housing assembly. The TCM will be mounted right below it.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old TCM. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical connectors. Ensure they click into place.
- Final Steps: Reinstall the air cleaner box and engine cover. Reconnect the battery terminal. While the module is plug-and-play, it’s good practice to use a scan tool to clear any stored fault codes from the system’s memory.
Guaranteed Fitment for Your Vehicle
This T42 Transmission Control Module, part number 24240400, is a direct fit for the 2006-2007 Rendezvous TCM. It is also compatible with a wide range of other General Motors vehicles. Please verify your model and specific options below.
This part will fit these makes and models with these options:
- RENDEZVOUS 06-07 Transmission; (air cleaner box)
- ALLURE 06-09 Transmission; (lower air cleaner housing)
- AURA 07-09 Transmission; (LH frame rail front)
- AVALANCHE 1500 07-08 Transmission; (next to battery)
- CANYON 08-12 Transmission; (RH rear engine compartment)
- COBALT 06-10 Transmission; (LH strut tower)
- COLORADO 08-12 Transmission; (RH rear engine compartment)
- DTS 06-11 Transmission; (RH front engine compartment)
- ENVOY 06-09 Transmission; (LH engine compartment)
- EXPRESS VANS 1500/2500/3500 06-14 Transmission; (RH engine compartment)
- G5 07-10 Transmission; (LH strut tower)
- G6 06-10 Transmission; (LH strut tower)
- GRAND PRIX 06-08 Transmission; (lower air cleaner housing)
- HHR 06-11 Transmission; (LH engine compartment)
- HUMMER H3 08-10 Transmission; (RH rear engine compartment)
- IMPALA 06-11 Transmission; (lower air cleaner housing)
- ION 06-07 Transmission; (behind LH strut tower)
- LACROSSE 06-09 Transmission; (lower air cleaner housing)
- LUCERNE 06-11 Transmission; (LH engine compartment)
- MALIBU 06-10 Transmission; (LH frame rail)
- MONTE CARLO 06-07 Transmission; (lower air cleaner housing)
- MONTANA 06-09 Transmission; (LH strut tower)
- RAINIER 06-07 Transmission
- SAAB 9-7X 06-09 Transmission; (LH engine compartment)
- SAVANA VANS 1500/2500/3500 06-14 Transmission; (RH engine compartment)
- SIERRA PICKUPS 1500/2500 07-13 Transmission; (next to battery)
- SILVERADO PICKUPS 1500/2500 07-13 Transmission; (next to battery)
- SUBURBAN 1500 07-08 Transmission; (next to battery)
- TAHOE 07-09 Transmission; (next to battery)
- TERRAZA 06-07 Transmission; (LH strut tower)
- TRAILBLAZER 06-09 Transmission; (LH engine compartment)
- UPLANDER 06-09 Transmission; (LH strut tower)
- VUE 07-10 Transmission; (LH front engine compartment)
- YUKON & YUKON XL 1500 07-09 Transmission; (next to battery)
Frequently Asked Questions
Do I need to take this part to a dealer to be programmed?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for installation, with no additional programming required.
What is a TCM and what does it do?
The TCM, or Transmission Control Module, is a computer that controls your automatic transmission’s functions, like when to shift gears and how firmly to engage them, based on data from various sensors.
Will this fix a P0700 code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While a failing TCM is a very common cause, this code can also be triggered by other issues. However, if you are also experiencing erratic shifting or other symptoms listed here, a new TCM is the most probable fix.
Is there a core charge for my old part?
No, there is no core charge. You are not required to send your old, faulty module back to us, saving you time and shipping costs.
What information do you need to program the module?
We only need your vehicle’s 17-digit Vehicle Identification Number (VIN). You can typically find this on your driver’s side dashboard (visible through the windshield) or on the driver’s side door jamb sticker.