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2021 Colorado Z71 Excessive Front End Dive and Body Roll

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David L. · rep 0 · May 22, 2:33 AM · 1 replies · solved · Question

Vehicle: 2021 Chevrolet Colorado Z71

Hi everyone,

I've got a 2021 Chevrolet Colorado Z71, and lately, I've noticed that the front end dives excessively when I brake, even moderately. It also exhibits a lot more body roll than it used to when I go around corners or make turns. The ride feels generally softer and less controlled.

I haven't done any off-roading that would severely damage anything, and the truck only has about 40,000 miles on it. I'm wondering if this is normal wear for the shocks/struts at this mileage, or if there could be something else going on. Any advice for a Colorado owner?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 2:33 AM

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ClearTheCode admin answer:

Excessive front-end dive during braking and noticeable body roll in turns are classic indicators of worn or failing suspension components, most commonly your shocks and struts. While 40,000 miles might seem a bit early for complete failure, heavy use, driving conditions, or even manufacturing defects can accelerate wear.

Common Causes for Excessive Dive and Body Roll:

  1. Worn Shocks/Struts: The primary function of shocks and struts is to dampen suspension movement. As they wear out, they lose their ability to control spring oscillation, leading to excessive body motion like dive, squat, and roll. This is the most likely culprit.
  2. Weakened Coil Springs: While less common than worn shocks, weakened or broken coil springs can also contribute to a soft, uncontrolled ride and excessive body movement. However, this usually results in a noticeable drop in ride height.
  3. Worn Sway Bar Bushings or End Links: The sway bar (anti-roll bar) helps to reduce body roll. If its bushings or end links are worn, it won't be as effective, leading to increased body roll. However, this typically doesn't cause significant front-end dive.
  4. Tire Pressure: While you didn't mention it, incorrect tire pressure (especially underinflation) can contribute to a 'mushy' feel and increased body roll, but it's unlikely to be the sole cause of severe dive.

What to Do:

  1. Bounce Test: Push down hard on each corner of the truck and release. If the vehicle bounces more than 1-2 times before settling, your shocks/struts are likely worn.
  2. Visual Inspection: Look for signs of fluid leaks on the shock/strut bodies, which indicate internal seal failure. Also, check for bent or damaged components.
  3. Check for Play: With the vehicle safely on jack stands, inspect sway bar end links and bushings for any visible wear or play.

When to See a Shop:

If you're experiencing these symptoms, it's advisable to have your 2021 Colorado Z71 inspected by a professional mechanic. Worn suspension components not only degrade ride comfort but also compromise handling, braking stability, and tire wear. Replacing worn shocks and struts will significantly improve your truck's safety and driving dynamics. A mechanic can accurately diagnose the issue and recommend the appropriate replacements, ensuring your Z71 handles as it should.

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