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I’m Not Arguing, I’m Diagnosing Funny Mechanic T-Shirt to Pinterest (opens in a new window)

AI model · PTC Crew

I’m Not Arguing, I’m Diagnosing Funny Mechanic T-Shirt
Price range: $31.95 through $51.95
Clothing sizes
Comfort Colors® Colors

Made to order. Please allow approximately 2–7 business days for production, plus shipping time. Production and delivery may take longer during holidays and other high-volume periods.

For the person who would rather read the codes than argue about the problem. This relaxed-fit T-shirt features a bold automotive diagnostic design with the cheeky message, “I’m Not Arguing, I’m Diagnosing,” alongside a scan tool graphic. It speaks to mechanics, technicians, garage regulars, and anyone who knows that every strange noise has a story—and…

Machine wash cold. Tumble dry low. Iron on steam if it needs it, medium heat.

Skip the dryclean. Skip the bleach unless you have to.

This shirt’s pre-shrunk during the garment-dyeing process — so what you order is what you’ll still be wearing after washing twenty times.

Shipping
Every piece is made to order. Production takes 3–7 business days, then it ships — 5–10 business days after that, US only for now.

No warehouse full of guessed sizes sitting around. That’s the tradeoff for a shirt made specifically for you.

Returns
Since it’s custom-printed, we don’t do buyer’s-remorse returns. If it shows up wrong — damaged, misprinted, not what you ordered — send us a photo within 7 days and we’ll fix it. No hoops.

Sizing
Check the size chart before you order. When it’s close, size up.

FULL DESCRIPTION

Description

For the person who would rather read the codes than argue about the problem. This relaxed-fit T-shirt features a bold automotive diagnostic design with the cheeky message, “I’m Not Arguing, I’m Diagnosing,” alongside a scan tool graphic. It speaks to mechanics, technicians, garage regulars, and anyone who knows that every strange noise has a story—and probably a code. The heavyweight garment-dyed cotton has a broken-in feel and rich vintage color, making it at home in the workshop, at a car meet, or during a long Saturday spent under the hood. A practical, personality-filled choice for birthdays, shop celebrations, mechanic milestones, or the automotive enthusiast who can never resist one more repair.

Product features
– 100% pre-shrunk ring-spun US cotton for lasting comfort
– Heavyweight 6.1 oz/yd² fabric with a relaxed fit
– Garment-dyed for a soft texture and rich color
– Double-needle stitching and seamless tubular construction for durability
– Available in sizes S–4XL and 62 colors; made in Honduras

Care instructions
– Machine wash: cold (max 30C or 90F)
– Do not bleach
– Tumble dry: low heat
– Iron, steam or dry: low heat
– Do not dryclean

Additional information

WeightN/A

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