2006 GMC Envoy XL Powertrain Control Module (PCM) 19209821 – Programmed to Your VIN

Struggling with erratic engine performance in your 2006 GMC Envoy XL? Imagine heading out for a family road trip, only to face sudden stalls or rough idling that leaves you stranded. 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 reliable drives into headaches. This pre-programmed PCM, part number 19209821, arrives ready for your vehicle—flashed with the latest GM updates using your VIN for a perfect match. Let’s dive into how this essential component restores smooth operation and peace of mind.

Key Features & Benefits

This powertrain control module stands out for its direct compatibility and hassle-free setup. We program it specifically to your VIN before shipping, ensuring it integrates seamlessly with your 2006 Envoy XL’s 4.2L engine. It supports a range of part numbers including 12569773, 12588650, up to 19209821, making it a versatile replacement option.

• Latest GM Flashing: Incorporates current software to optimize fuel efficiency and emissions control, helping your SUV run cleaner and more reliably.
• Enhanced Diagnostics: Improves response to sensors, reducing the risk of recurring check engine lights.
• Durable Design: Built to withstand the demands of daily driving, from city commutes to off-road adventures in your Envoy XL.
• Quick Recovery: Restores proper engine timing and transmission shifts, boosting overall drivability without extensive shop time.

From my experience, owners often notice better throttle response after installation—ideal for those who use their Envoy XL for towing trailers or navigating hilly terrain.

Common Issues & How This Fixes Them

Powertrain control modules in 2006 GMC Envoy XL models commonly fail due to electrical surges, heat exposure, or age-related wear, triggering symptoms like intermittent no-start conditions or poor acceleration. I’ve diagnosed countless cases where drivers report a check engine light with codes such as P0601 (internal control module memory error) or P0300 (random misfire detected). These issues stem from corrupted software or failed internal components, disrupting fuel injection and ignition timing.

Replacing with this programmed PCM resolves these by recalibrating the system. For instance, if your Envoy XL hesitates during highway merges, this module corrects sensor data processing, eliminating misfires. Another frequent problem: transmission slipping in wet conditions, often linked to DTC P0700 (transmission control system malfunction). The fresh programming clears these faults, restoring smooth shifts and preventing further damage.

Expert Tip: Before swapping, scan for DTCs using an OBD-II tool. In one scenario, a client with a similar 4.2L engine fixed persistent stalling by addressing a related sensor issue first—pairing it with this PCM ensured long-term reliability.

Easy Installation Guide

Installing this PCM is straightforward for DIY enthusiasts or pros. Located on the left-hand engine side in your 2006 Envoy XL, it typically takes under an hour with basic tools.

1. Disconnect the battery to avoid electrical shorts.
2. Locate the module (LH engine compartment) and unplug the harnesses.
3. Remove mounting bolts and swap in the new unit.
4. Reconnect everything, then provide your VIN post-purchase for us to program and ship.
5. Clear any stored codes with a scanner for optimal performance.

Pro Tip: After installation, drive a few cycles to let the system adapt—monitor for improved idle stability.

Fitment Details

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

• 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 Isuzu I-280 (RH firewall)
• 2006 Saab 9-7X (LH engine, 6 cylinder, IDs 12569773 or 12597521)
• 2004-2006 GMC Canyon (RH firewall)
• 2006 GMC Envoy (LH engine, 4.2L)

Compatible with: 2006 GMC Envoy XL. Always verify part numbers and provide your VIN for precise matching to avoid compatibility hiccups.

Don’t let a failing PCM sideline your adventures. Order this programmed module today and get back to confident driving—your Envoy XL deserves it. Act now for fast shipping and expert support!