I bought a 2004 RAM 1500 Quad Cab 5.7 Hemi 5 weeks ago and have started to notice a vibration whenever I brake, back, or when idling on a downward slope. The vibration is more apparent when the A/C is turned on. The vibration only lasts for a few seconds, but it feels like it is resonating the full length of the truck. Has anyone else experienced a similiar vibration? If so, do you know what is causing the vibration and how it can be eliminated?

It's possible you have a brake problem (warped rotors), a tire problem (separated belts), a wheel problem (bent/out of balance/loose lugs), or some other driveline problem (u-joints/driveshaft). You should take it to the dealership and have it checked. It could be something simple and minor, or something complicated and major.

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'04 Ram QC SLT 4x4 Hemi / Flame Red / 3.92s / 4-Wheel ABS / AR Vanguards / 285/60-18 Cooper HT+ / Bilsteins / Hellwig Sway Bar / Westin Ovals / BedRug / Bed Xtender / LoRider Lid / Infinity +XM / 17769 DynoMax / '03 Tailpipe / Mopar Tip / aFe Hi-Breather

i had a resonation going down my 04 anytime there was a load on it, and especially when the a/c was on, i struggled with dodge forever, and finally took it to another shop and had an extra muffler hanger welded on. The problem was that the pipes were not properly supported and were shaking and resonating all down the truck. The hanger fixed this problem immediately. Hope this helps!

Thanks for the reply.

Matrix04 - Can you tell me where the extra pipe hanger was placed? Thanks.