Garage Technician
Posted Jul 7, 2026 · We last checked this listing on Oct 6, 2026
Likely interview questions for this role
Written from this job description, not a generic list. Each one notes what the interviewer is really checking.
About your past
Tell me about a time you found a safety problem on a vehicle that the driver wanted back right away.
What they are checking: Whether they hold the line on safety when there is pressure to get a truck back on the road.
Tell me about the hardest diagnosis you've worked on in an automotive shop.
What they are checking: How they reason through a tough problem and whether they stick with it until the real cause is found.
How do you keep your work records and repair notes so the next technician knows what was done?
What they are checking: Whether they document work clearly, since fleet history matters for safety and warranty.
What would you do
You're on second shift with no supervisor around and a line truck is needed for storm work in the morning. The part you need isn't in stock. What do you do?
What they are checking: Whether they think about keeping crews working while still following procedure and communicating clearly.
About the work
An aerial unit comes in with the boom drifting down slowly while it's parked. How do you track that down?
What they are checking: Whether they can diagnose hydraulic systems step by step, like checking holding valves and cylinder seals.
Walk me through how you diagnose an intermittent electrical problem on a truck that the driver says only happens sometimes.
What they are checking: Whether they have a real method for electrical faults instead of swapping parts until it goes away.
This job includes DOT safety-sensitive functions. What does that mean to you day to day?
What they are checking: Whether they understand drug and alcohol testing, inspection duties and why the rules exist for fleet work.
What kind of welding have you done, and how do you decide if a weld repair on a truck body or bracket is safe to make?
What they are checking: Their real welding skill and their judgment about when a repair should not be done in the shop.
How do you inspect an air brake system on a Class A vehicle?
What they are checking: Whether they know air brake components and checks, which ties to the CDL and airbrake endorsement requirement.
What's your experience with power take-off and other special equipment on utility trucks?
What they are checking: Whether they have worked on the specialized equipment a utility fleet depends on, beyond regular cars.
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Practice this out loudThe full job description
As published by Ameren.