Upgrading your GM vehicle with a 2-way remote start system offers enhanced convenience and control, allowing you to start your car from a greater distance and receive confirmation that your command has been received. However, installing these advanced systems, especially in vehicles already equipped with factory remote start (option code AP3), requires more than just physical installation. A crucial tool in this process is a 2-way GM scan tool. This article, brought to you by the automotive experts at vcdstool.com, will explain why a specialized scan tool is indispensable for a successful 2-way remote start upgrade.
Understanding the 2-Way GM Scan Tool
A 2-way GM scan tool is not your average OBD-II scanner. It’s a sophisticated diagnostic and programming device designed to communicate deeply with the electronic control units within General Motors vehicles. Unlike basic scanners that primarily read engine and emissions-related codes, a 2-way scan tool offers bidirectional communication, allowing technicians to not only read data but also send commands and program modules.
For tasks like installing a 2-way remote start system, this capability is paramount. The system upgrade often involves replacing the factory Remote Control Door Lock Receiver (RCDLR) with a 2-way RCDLR. This new module needs to be properly integrated into the vehicle’s existing electronic architecture, a task that necessitates a 2-way scan tool.
Why a 2-Way Scan Tool is Non-Negotiable for 2-Way Remote Start Installation
Several steps in the 2-way remote start installation process absolutely require a 2-way GM scan tool. Let’s break down these critical junctures:
RCDLR Programming
The core of the 2-way remote start upgrade is the 2-Way Remote Control Door Lock Receiver (RCDLR). This module, part number 19171129 or 19213167 in upgrade kits for vehicles with factory remote start (AP3), is not plug-and-play. As the original kit instructions clearly state: “The 2-Way RCDLR will not work until it is programmed. Using the Scan Tool and SPS terminal, program the 2-Way RCDLR.”
A 2-way GM scan tool, connected to a Service Programming System (SPS) like TIS2WEB, is essential to program the new 2-way RCDLR. The scan tool facilitates communication with the vehicle’s computer system, allowing you to select the correct RCDLR module (“RCDLR Remote Control Door Lock Receiver 2 Way – with Yellow Label”) and configure it with the vehicle’s options based on its VIN. Without this programming step, the new 2-way remote start system will simply not function.
TPMS Information Transfer (If Applicable)
For vehicles equipped with a Tire Pressure Monitoring System (TPMS), the necessity of a 2-way scan tool extends further. The installation procedure highlights the importance of using the scan tool to perform a “Copy and Paste TPM Information” procedure before removing the old RCDLR.
This critical step ensures that the tire type information and sensor data from the original RCDLR are extracted and stored in the scan tool. After installing the new 2-way RCDLR, the scan tool is then used to “Paste TPM Information” to the new module. This process negates the need for manual tire type setup and sensor learning procedures, streamlining the installation and ensuring the TPMS system continues to function correctly with the new remote start system.
Diagnostic Trouble Code (DTC) Management
After the installation and programming are complete, a 2-way GM scan tool remains crucial for system verification. The procedure mandates using the scan tool to:
- Retrieve any Diagnostic Trouble Codes (DTCs) from all modules. This step identifies any errors that may have arisen during the installation process.
- Clear all DTCs. This clears any fault codes, ensuring a clean start for the new system.
These steps are vital for ensuring the entire vehicle system is healthy and functioning correctly after the remote start upgrade. Ignoring DTCs can lead to unresolved issues and potentially impact other vehicle systems.
Key Capabilities of a 2-Way GM Scan Tool for Remote Start Upgrades
To effectively perform a 2-way remote start upgrade, your GM scan tool must possess specific capabilities:
- GMLAN Communication: Compatibility with GM’s Global Area Network (GMLAN) is fundamental for communicating with the RCDLR and other modules.
- Service Programming System (SPS) Access: The scan tool should be capable of interfacing with GM’s SPS (like TIS2WEB) for module programming and software updates.
- TPMS Functions: For TPMS-equipped vehicles, the scan tool must support TPMS data transfer and potentially sensor programming or relearn procedures.
- DTC Reading and Clearing: Essential for system diagnostics and post-installation verification.
- Controller Selection: The tool should allow you to specifically select and program the “RCDLR Remote Control Door Lock Receiver 2 Way – with Yellow Label” module.
Choosing the Right 2-Way GM Scan Tool
Investing in a quality 2-way GM scan tool is a wise decision for anyone regularly working on GM vehicles, especially when dealing with advanced systems like remote start. When selecting a scan tool, consider factors like:
- Functionality: Ensure it covers all the necessary functions for remote start upgrades, including programming, TPMS, and diagnostics.
- Ease of Use: A user-friendly interface and clear instructions are crucial for efficient operation.
- Updates and Support: Regular software updates and reliable technical support ensure the tool remains compatible with the latest GM models and systems.
Conclusion: Empower Your Upgrades with the Right Tool
Upgrading to a 2-way remote start system significantly enhances your GM vehicle’s functionality. However, to ensure a seamless and successful installation, a 2-way GM scan tool is not just recommended – it’s absolutely necessary. From programming the new RCDLR to managing TPMS data and verifying system health, this tool is the key to unlocking the full potential of your remote start upgrade. Explore vcdstool.com for professional-grade diagnostic tools designed to empower automotive technicians and enthusiasts alike.
