Holden performance and repair services

Why Willy’s Workshop?

Because when it comes to Holdens, we’re right at home. The Colorado is one of the most common models through our doors, and we’ve put in hours under the bonnet of the 2.8L Duramax — tuning, repairing and upgrading it in all conditions, for tradies, tourers and everyday drivers alike.

Work or play, weekday or weekend — we know how to get the best performance out of your Holden, wherever you take it.

At Willy’s, we treat every job like it’s our own ute. That means no shortcuts and no generic tunes. You can expect results that speak for themselves. Results you’ll feel every time you drive.

Performance tuning for how you drive your Holden

If you want your Colorado to tow harder, respond quicker, or sip less fuel on long hauls, a custom tune from Willy’s will get you there. With just a remap, any Colorado variant can see up to 25% more horsepower and 20% more torque, all while improving fuel efficiency.

We don’t use generic files or push your engine past its limits. Just safe, smart tuning.

How we tune your Holden for the way you drive:

• Power, Towing or Efficiency: whether you’re towing a caravan, looking for more power or trying to get more mileage out of a tank, we tailor your tune to the way you drive.
• Optimised for the usable driving range: Adding power where you need it, not as a big number on your dyno print out.
• More mileage out of a tank, and your engine: chances are you’re not on a race team, so there’s no need for your car to be tuned like one. At Willy’s, we focus on tuning your engine to extend its life. Safe, smart tuning, the way it should be.

Our servicing that keeps your Holden running strong

We keep hardworking Colorados at their best, with professional servicing that covers everything from maintenance to major repairs.

Our Holden servicing includes:

• Logbook servicing to keep your warranty intact and your vehicle running to spec.
• General maintenance, including oil changes, filters, fluid checks and top-ups.
• Accurate fault diagnostics for warning lights, limp mode, rough idle and other hard-to-trace issues.
• Diesel system repairs, like DPF and EGR cleaning or replacement, cooling issues, turbo faults and injector problems.
• Pre-purchase inspections to help you buy used with confidence.
• Model-specific insights, including known quirks in the 2.8L Duramax and tips to avoid common issues.
• Fast turnaround, clear pricing and trusted workmanship.