Grinding noise when I brake and a light on the dash. What do I fix first?

Mike · AI truck parts specialist
Mike is a free AI specialist for heavy-duty truck and trailer parts. Describe what you need, he'll help you identify the issue, find the right part, or point you in the right direction.
Free. No account. Or call/text: (865) 290-5485 EN · (865) 217-5813 ES
The truck's making a sound it didn't make yesterday. A light's on. Something's leaking and you're not sure from where. You don't need a catalogue with 50,000 parts to scroll through. You need a straight answer: what's wrong, which part fixes it, and what to do first.

Mike is an AI assistant with a deep knowledge base for heavy-duty trucks and trailers. Talk to him the way you'd talk to a mechanic who knows your rig. He understands plain descriptions, so you don't need the right terms or the part number.
Tell him what's happening and he'll lead you toward a fix: what else to check, what to fix first, and where a budget alternative makes sense if money's tight.
“Tell me what the truck's doing. I'll help you figure out the part and where to start.Mike
Reach him however's easiest:
Open the chat, call, or send a text. Describe the problem in your own words. Add a photo or VIN if you've got one.
Mike asks a couple of quick questions if he needs to, then tells you the part, what to check first, and your options — including a budget alternative.
When you're ready, Mike can pull the part from PartsNow.ai and get it shipped or set up for pickup. No pressure — the answer is free whether you buy or not.
English: (865) 290-5485 · Español: (865) 217-5813 — calls and texts
Grinding noise when I brake and a light on the dash. What do I fix first?
I've got the old part in my hand but no number on it. Here's a photo.
Truck's down at 2 a.m. and every counter's closed. Can you help?
Specs, engines and history for every US commercial truck, Class 3 to 8 — with Mike on every page to help you diagnose yours.
PartsNow.ai is an AI-powered agentic commerce platform connecting fleet operators, repair shops, and owner-operators with the parts they need.
Browse the full catalogue — 50,000+ new and OEM parts, shipped nationwide with free local pickup in Knoxville.
No. Ask Mike whatever you need and leave. The help is free.
No account, no sign-up. Open the chat, call, or text and go.
That's the whole point of Mike. Describe the problem, send a photo, or give a VIN. He figures out the part and tells you where to start.
Yes. Chat on the site, call, or text. English: (865) 290-5485. Español: (865) 217-5813. Both lines take calls and texts.
Yes. Ask in Spanish and he'll answer in Spanish. The Spanish line is (865) 217-5813.
Mike can pull it from PartsNow.ai, new or OEM, and get it shipped or set up for pickup in Knoxville. Up to you.
Just describe the problem to Mike in plain words, or send a photo or your VIN. He identifies the right part for you — no part number or technical terms needed.
Yes. Snap a photo of the old part — even with no number stamped on it — and Mike matches it to the right replacement.
At PartsNow.ai: 50,000+ new and OEM parts from trusted dealers, shipped nationwide from Knoxville, TN, with free local pickup. Mike can order it for you right from the chat.
All heavy-duty makes — Freightliner, Peterbilt, Kenworth, Mack, Volvo, and International — across brakes & wheel end, air system, electrical, engine, filtration, driveline, hydraulics, and trailer parts.
About a minute. Open the chat, call, or text (865) 290-5485 any hour — Mike answers 24/7 in English or Spanish.