2006 GMC Envoy Powertrain Control Module (PCM) 19209820 – Programmed to Your VIN

Dealing with erratic engine performance in your 2006 GMC Envoy? As a seasoned automotive repair advisor with over two decades in diagnostics and parts, I’ve seen how a faulty powertrain control module can turn a reliable SUV into a headache. This pre-programmed PCM, part number 19209820, arrives flashed with the latest GM updates tailored to your VIN. Simply provide your vehicle’s identification number after purchase, and we’ll handle the programming before shipping. It’s a direct solution for restoring smooth operation, clearing persistent codes, and getting you back on the road confidently.

Key Features & Benefits

This PCM isn’t just a replacement—it’s optimized for precision. It manages critical functions like fuel injection timing, ignition control, and transmission shifting, ensuring your Envoy’s 4.2L engine runs efficiently. Key perks include:

• VIN-Specific Programming: Matches your exact vehicle specs to prevent compatibility glitches and ensure seamless integration.
• Latest GM Updates: Incorporates factory refinements for better fuel economy and reduced emissions, helping avoid future diagnostic trouble codes (DTCs) like P0601 or P0604.
• Broad Part Number Compatibility: Replaces numbers such as 12569773, 12588650, 12589311, and more up to 19209821—perfect if your original unit matches any of these.
• Enhanced Reliability: Boosts overall drivability, especially during demanding tasks like hauling loads or navigating rough terrain.

In my experience, swapping to this unit often resolves intermittent stalling, which I’ve fixed on countless Envoys. Imagine heading out for a weekend adventure, only to have your engine hesitate at a stoplight— this PCM eliminates that frustration by stabilizing electronic signals.

Common Issues & How This Fixes Them

Over the years, I’ve diagnosed plenty of 2006 GMC Envoy owners facing PCM-related woes. Symptoms often start subtle: a flickering check engine light, rough idling, or unexplained power loss while accelerating. These stem from internal failures like corrupted memory or sensor miscommunications, common in high-mileage vehicles exposed to heat and vibration.

For instance, if you’re towing a trailer through hilly areas and notice sluggish throttle response, it could tie back to DTC P2135 (throttle position sensor correlation) or P0300 (random misfire). This programmed PCM addresses these by recalibrating controls and applying GM’s refined software, effectively clearing codes and restoring factory performance.

Another real-world scenario: During rainy drives, water intrusion might short the module, leading to no-start conditions. I’ve advised clients to check connectors first, but when the PCM itself is compromised, replacement is key. This unit fixes it by providing a robust, updated alternative that withstands environmental stresses better.

Expert Tip: Before installation, scan for DTCs using an OBD-II tool. If you see P0606 (ECM/PCM processor) or similar, this is your fix. Pair it with fresh spark plugs for optimal results—I’ve seen this combo extend engine life significantly.

Easy Installation Guide

Swapping the PCM in your 2006 Envoy is straightforward for DIYers with basic tools. Located on the left-hand engine side (LH engine compartment), it’s accessible without major disassembly.

1. Disconnect the battery to reset systems and avoid shocks.
2. Locate the module—it’s mounted near the firewall for easy reach.
3. Unplug harnesses carefully, noting positions to prevent mix-ups.
4. Remove mounting bolts, install the new PCM, and reconnect everything.
5. Reconnect the battery and use a scan tool to verify no codes remain.

Pro advice: If you’re not comfortable, visit a trusted mechanic—installation typically takes under an hour. Always double-check your VIN match to sidestep reprogramming hassles.

Fitment Details

This PCM fits perfectly in your 2006 GMC Envoy with the 4.2L engine (LH engine location). It’s also compatible with similar models for versatility:

• 2004-2006 Chevrolet Colorado (RH firewall)
• 2006 Buick Rainier (LH engine, 4.2L)
• 2006 Hummer H3 (RH firewall)
• 2006 Isuzu Ascender (LH engine, 4.2L)
• 2006 Isuzu i-350 (RH firewall)
• 2006 Chevrolet TrailBlazer (LH engine, 4.2L)
• 2006 Chevrolet TrailBlazer EXT (LH engine, 4.2L)
• 2006 GMC Envoy XL (LH engine, 4.2L)
• 2006 Isuzu i-280 (RH firewall)
• 2006 Saab 9-7X (LH engine, 6-cylinder, IDs 12569773 or 12597521)
• 2004-2006 GMC Canyon (RH firewall)

Compatible with: 2006 GMC Envoy. Verify part numbers and provide your VIN for confirmation to ensure a flawless fit.

Don’t let PCM problems sideline your Envoy any longer. Order now, send your VIN, and experience restored power and peace of mind on every drive. Act today—your adventure awaits!