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- Service Area: Wellington • Hutt • Porirua • Kapiti • Wairarapa
ABOUT
About GSM Limited
Mobile Heavy Diesel and Engineering Experts
Committed to delivering exceptional on-site service and compliance support always
We are a family-owned mobile mechanical team serving Greater Wellington, Kāpiti and Wairarapa. Our technicians keep trucks, earthmoving machines and plant operating with scheduled servicing, reliable diagnostics and fast repairs on site. From hydraulic hose replacements and attachment rebuilds to welding and electrical fault finding, we bring the workshop to you—saving tow costs and downtime. Need compliance? We carry out pre-WOF/COF inspections and complete the remedial work so you pass first time. For fleets, we set tailored maintenance plans with clear service records and reminders. And when something fails unexpectedly, our after-hours breakdown response is available 24/7 to get you moving again.
Supplier Listing Certificate
Business Name: GMS LIMITED t/a Gibson Mechanical Solutions
NZBN: 9429051693466
Contractor Category: CAT S
Contractor Status: Performing
Score: 86%
Expiry Date: 21/05/2027
Frequently Asked Questions
What you need to know
We’re a mobile Heavy Diesel & engineering team. From trucks and earthmoving gear to hydraulics and welding, we handle servicing, diagnostics, and pre-WOF/COF checks on site. Below are the most common questions—message us if you don’t see yours.
Yes. We provide after-hours breakdown support, weekends and public holidays. Call us with your location, unit type, and issue; we’ll give you an ETA and arrive with diagnostic equipment and common parts.
Heavy diesel trucks, earthmoving and forestry equipment, plant and quarry machinery, plus light diesel and light vehicles.
We carry diagnostic computers and test equipment for fast fault finding and clear repair reports.
Customer Feedback
What they’re saying?
“Switched to their scheduled servicing — fewer breakdowns and clearer reports for compliance. Reliable, on time, every time."
Mark Tui
Director, Tui Earthmoving
“Cylinder leak and cracked guard sorted the same visit. Clean welding, hydraulic hoses replaced, machine back earning that afternoon.”
Sofia K.
Site Foreman, Riverstone Quarry
“Called at 11pm — truck back on the road by morning. Honest pricing and proper diagnostics. Lifesaver for our delivery schedule.”
Josh MacLean
Fleet Supervisor, Harbour Logistics
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Years of
Years of
experience
Fast Diagnostics, Repairs &
Compliance Checks
Quick Links
Contact
Keren Gibson
Laura Gibson
About
Small family locally owned mobile mechanical company servcing the Greater Wellington region. From the Kapiti coast to the Waiarapa and everywhere inbetween. With 10+ years in the Heavy Diesel industry, Mobile Welding and Engineering experence.