2017 Chevrolet Colorado V6 – The Ultimate Owner’s Guide

The 2017 Chevrolet Colorado V6 features the updated LGZ engine paired with an 8-speed automatic transmission, delivering a significant boost in horsepower and towing capability over previous models. This guide explores essential maintenance, common transmission shudder fixes, and DIY troubleshooting to keep your midsize truck running at peak performance.

Finding a midsize truck that balances daily commuting with heavy-duty weekend tasks is a challenge for many owners. You need a vehicle that is nimble enough for the city but strong enough to haul a trailer through the mountains.

The 2017 chevrolet colorado v6 was designed to bridge that gap, introducing a more refined powertrain and improved efficiency. Whether you use yours for work or play, understanding the nuances of the LGZ engine is the key to long-term reliability.

In this article, we will break down the technical specifications, address the infamous transmission “shudder,” and provide a step-by-step maintenance schedule. By the end, you will have the confidence to handle basic repairs and know exactly when to call in a professional mechanic.

The LGZ 3.6L V6 Engine: A Technical Overview

The heart of the 2017 chevrolet colorado v6 is the second-generation 3.6L V6, internally known as the LGZ engine. This was a significant upgrade from the previous LFX engine found in the 2015-2016 models.

This engine utilizes Direct Injection and an improved Active Fuel Management system (AFM). AFM allows the engine to deactivate two cylinders under light load conditions, which helps improve fuel economy during highway cruising.

With an output of 308 horsepower and 275 lb-ft of torque, this powerplant provides the muscle needed for a maximum towing capacity of 7,000 pounds when properly equipped. It is a high-revving engine that feels most alive in the mid-to-upper RPM range.

Advanced Valve Timing and Efficiency

The LGZ incorporates dual overhead cams and a sophisticated Variable Valve Timing solenoid system. This allows the engine to adjust valve overlap in real-time, optimizing both low-end torque and high-end power.

However, the complexity of this system means that oil quality is paramount. Dirty oil can lead to sludge buildup in the VVT solenoids, potentially triggering a P0011 camshaft position timing error code on your dashboard.

To prevent these issues, always adhere to the recommended service intervals and use high-quality synthetic fluids. This engine is designed for performance, but it requires disciplined upkeep to stay healthy.

Mastering the 2017 chevrolet colorado v6 Transmission and Drivetrain

One of the biggest changes for this model year was the introduction of the 8L45 8-speed automatic transmission. While the extra gears provide smoother shifts and better fuel economy, this unit has a well-documented history of “shuddering.”

Owners often describe the sensation as driving over rumble strips while at a steady speed. This is usually caused by moisture absorption in the Dexron VI transmission fluid, which affects the torque converter clutch engagement.

If you experience this, the first step is a professional fluid flush using the updated Mobil 1 Synthetic LV ATF HP fluid. This specific fluid was formulated to resolve the hydroscopic issues that plagued the original factory fill.

Transfer Case and 4WD Operation

For those with 4WD models, the transfer case requires regular inspection. Whether you have the standard electronic part-time system or the AutoTrac system found on higher trims, lubrication is vital.

Off-roaders should be particularly mindful of the vent tubes. If you frequently cross deep water or mud, check that these tubes are clear to prevent pressure buildup and seal failure within the drivetrain components.

Regularly cycling through your 4WD modes (2H, 4H, and 4L) once a month is a “pro tip” to keep the internal actuators from seizing. This ensures the system is ready to engage the moment you hit the trail.

Essential Maintenance Checklist for Owners

Performing your own maintenance on the 2017 chevrolet colorado v6 is a great way to save money and learn the mechanics of your vehicle. The layout is relatively DIY-friendly, provided you have the right tools.

Start with your oil changes. This engine requires 6 quarts of Dexos1 Gen 2 5W-30 motor oil. Using the correct “Dexos” certified oil is critical for protecting the high-pressure fuel pump and internal engine components.

Don’t forget to locate the oil filter location before you start. It is a cartridge-style filter located on the top of the engine, which makes for a much cleaner job than traditional spin-on filters.

• Oil Change: Every 5,000 to 7,500 miles depending on driving conditions.
• Engine Air Filter: Inspect every 15,000 miles; replace if dark or clogged.
• Cabin Air Filter: Replace annually to maintain HVAC efficiency and air quality.
• Tire Rotation: Every 7,500 miles to ensure even tread wear and prolong tire life.

Spark Plugs and Ignition System

The LGZ engine is sensitive to ignition health. The spark plug gap specifications are typically set at 0.035 inches. Using the correct Iridium-tipped plugs is essential for maintaining efficient combustion.

Replacing plugs on a V6 can be a bit tight, especially the rear cylinders. Take your time, use a swivel socket, and always start the threads by hand to avoid cross-threading the aluminum cylinder heads.

While you are there, inspect the ignition coils for any signs of heat damage or cracking. A failing coil can cause a subtle misfire that might not throw a code immediately but will definitely hurt your fuel economy.

Diagnostic Troubleshooting Matrix

When things go wrong, a systematic approach to diagnostics will save you hours of frustration. The table below outlines common symptoms found in the 2017 chevrolet colorado v6 and their likely causes.

Symptom	Potential Cause	Recommended Action
Vibration at 30-60 MPH	Transmission Fluid Contamination	Perform full fluid flush with updated ATF.
Rough Idle / Stalling	Dirty Mass Air Flow sensor	Clean sensor with dedicated MAF cleaner spray.
Check Engine Light (P0011)	VVT Solenoid Failure	Inspect oil level; replace intake/exhaust solenoids.
Ticking Noise from Engine	High-Pressure Fuel Pump	Normal operation for GDI, but check for leaks.

If you encounter engine problems that involve heavy knocking or a “limp mode” condition, pull over immediately. Driving with a severe mechanical fault can turn a simple sensor replacement into a total engine overhaul.

Performance and Off-Road Setup

For the weekend warrior, the 2017 chevrolet colorado v6 is a fantastic platform for modifications. If you have the Z71 or ZR2 trims, you already have a head start with better shocks and underbody protection.

Adding a high-flow air intake can help the LGZ engine breathe better, though the gains are often more audible than mechanical. A more significant upgrade is a “catch can” system to prevent oil vapors from coating the intake valves.

Because this is a direct-injection engine, there is no fuel washing over the intake valves to keep them clean. Over time, carbon buildup can restrict airflow. A catch can is a simple DIY install that acts as a preventative measure for long-term health.

Suspension and Tires

Upgrading to a leveling kit is a popular choice for Colorado owners. This raises the front end by 1-2 inches, removing the factory “rake” and allowing for slightly larger all-terrain tires.

When choosing tires, consider the weight. Heavy E-rated tires will provide excellent puncture resistance off-road but will noticeably sap the power from the V6 and decrease your MPG.

Always re-torque your lug nuts after the first 50 miles of driving on new wheels or after a rotation. Safety is the priority, especially if you are taking your truck into remote backcountry areas.

Frequently Asked Questions About the 2017 chevrolet colorado v6

What is the most common problem with the 2017 Colorado V6?

The most frequent complaint is the transmission shudder associated with the 8-speed automatic. Most cases are resolved by flushing the system and replacing the fluid with the latest GM-approved synthetic formula.

Does the 2017 Colorado V6 have a timing belt or chain?

The LGZ 3.6L V6 uses a timing chain. Unlike a belt, the chain is designed to last the life of the engine, provided that you maintain proper oil levels and quality to prevent the tensioners from wearing prematurely.

What kind of gas should I use in my 2017 Colorado V6?

The engine is calibrated to run on 87-octane regular unleaded gasoline. While using premium fuel won’t hurt the engine, you likely won’t see a significant increase in performance or economy to justify the extra cost.

How often should I change the transmission fluid?

For “severe” service (towing, off-roading, or heavy city traffic), GM recommends changing the fluid every 45,000 miles. For normal driving, the interval is much longer, but many experts suggest a 60,000-mile limit to be safe.

Final Thoughts for the Savvy Owner

The 2017 chevrolet colorado v6 remains one of the most versatile midsize pickups on the used market. It offers a sophisticated engine and a comfortable interior that punches well above its weight class.

By staying on top of your maintenance—specifically the oil quality and transmission fluid—you can avoid the most common pitfalls of this generation. Remember to always use the Dexos1 Gen 2 5W-30 motor oil and keep an eye on your VVT solenoids.

Owning a truck like this is about more than just getting from point A to point B; it is about the freedom to explore. Take care of your Colorado, and it will take care of you on every trail, highway, and job site you encounter. Stay safe and keep wrenching!