2018 Ram 1500 Brakes Pulsating - Rotors or Calipers?

ClearTheCode guidance (Ram · Brakes & suspension)

Summary: For 2018 Ram 1500 Brakes Pulsating - Rotors or Calipers?, work through these steps on your 2015+ vehicle:

1. Confirm the symptom — note when it happens (cold start, highway, after fuel fill, etc.).
2. Scan codes — save all pending/stored DTCs; don't clear until you've recorded them.
3. Check TSBs & recalls — look up your VIN for open campaigns and known fixes.
4. Inspect the obvious — related fuses, connectors, fluid level, and recent repairs.
5. Test the common fix — follow model-specific service procedures; one change at a time.
6. Escalate if needed — burning smell, no brakes, overheating, or stalling in traffic → shop visit.

Owner reported: Hey everyone,

I've got a 2018 Ram 1500 Laramie with about 75,000 miles on it, and lately, the brakes have been feeling really weird. When I apply them, especially at highway speeds, I get a noticeable pulsation through the pedal. It's not a violent shake, but it's definitely there and getting worse.

I had the front pads and rotors replaced about 20,000 miles ago, but the rears are still original…

This is educational guidance, not a substitute for hands-on diagnosis.