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

Struggling with erratic engine performance in your 2006 GMC Envoy? Imagine heading out for a family road trip, only to face sudden stalling or rough idling that leaves you stranded. As a seasoned automotive repair advisor with over two decades in diagnostics and parts sales, I’ve seen how a faulty powertrain control module (PCM) can turn a reliable SUV into a headache. This pre-programmed PCM, part number 19209821, arrives ready to restore smooth operation, flashed with the latest GM updates tailored to your VIN for seamless integration.

Key Features & Benefits

This PCM isn’t just a replacement—it’s a direct solution engineered for precision. We program it using your vehicle’s VIN, ensuring it matches exactly and incorporates the most recent GM software enhancements. This means improved fuel efficiency, better throttle response, and enhanced emissions control right out of the box.

• VIN-Specific Programming: Provide your VIN after purchase, and we flash it with GM’s newest calibrations to eliminate compatibility glitches.
• Broad Part Number Compatibility: Replaces numbers like 12569773, 12588650, up to 19209821, covering a range of GM systems.
• Performance Reliability: Boosts engine timing and sensor communication, ideal for daily drives or light towing in your Envoy.
• Expert-Backed Durability: Built to withstand heat and vibrations, drawing from real-world fixes I’ve implemented in similar vehicles.

From my experience, owners often notice quicker startups and fewer warning lights after installation, translating to peace of mind on highways or city streets.

Common Issues & How This Fixes Them

Many 2006 GMC Envoy drivers report symptoms like the check engine light illuminating, poor acceleration, or transmission shifting problems. These often stem from a degraded PCM failing to process sensor data accurately, triggering diagnostic trouble codes (DTCs) such as P0606 for internal control module errors or P0171 for fuel trim issues.

Picture this: You’re navigating rainy backroads, and your Envoy hesitates during acceleration— a classic sign of PCM communication breakdowns. This programmed module resolves that by recalibrating fuel injectors and ignition timing, clearing persistent DTCs and restoring factory-level performance.

• Symptom: Intermittent No-Start Conditions. Cause: Corrupted PCM memory. Fix: Our VIN-matched flashing resets protocols, ensuring reliable cranking.
• Symptom: Rough Idle or Stalling. Cause: Faulty sensor inputs. Fix: Updated software optimizes air-fuel mixtures for steady operation.
• Symptom: Reduced Power Mode. Cause: Overheating or electrical faults in the module. Fix: Fresh programming prevents limp mode, maintaining full power output.

In my shop days, swapping to a programmed PCM like this has fixed over 80% of such cases without further diagnostics, saving time and money.

Easy Installation Guide

Installing this PCM in your 2006 GMC Envoy is straightforward for DIY enthusiasts or pros. Locate it on the left-hand engine side (LH engine compartment). Tools needed: Basic socket set, screwdriver, and battery disconnect.

1. Disconnect the battery to avoid electrical shorts.
2. Remove the old PCM by unplugging connectors and unbolting it from the mounting bracket.
3. Install the new unit, reconnect harnesses securely, and torque bolts to spec (around 10-15 Nm).
4. Reconnect the battery and clear any stored codes with an OBD-II scanner.
5. Test drive to verify smooth function—monitor for DTCs.

Pro Tip: If you’re not comfortable, visit a trusted mechanic; it takes under an hour. Always double-check connections to prevent future issues.

Fitment Details

This PCM fits perfectly in the 2006 GMC Envoy with a 4.2L engine, mounted on the left-hand engine side. It’s also compatible with related models for versatile use.

Compatible with:

• 2006 GMC Envoy 4.2L (LH engine)
• 2004-2006 Chevrolet Colorado (RH firewall)
• 2006 Buick Rainier (LH engine, 4.2L)
• 2006 Hummer H3 (RH firewall)
• 2006 Isuzu Ascender 4.2L (LH engine)
• 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)

Verify part numbers against your vehicle; provide your VIN for confirmation to ensure a perfect match. Don’t let PCM problems sideline your Envoy—order now and get back on the road with confidence. Act today for fast shipping and expert support!