Commercial Vehicles Under Colorado Lemon Law

Colorado’s Lemon Law applies to vehicles up to 10,000 lbs GVWR under C.R.S. § 42-10-102 — the standard threshold.

What’s covered

Personal-use vehicles up to 10,000 lbs GVWR.
Light-duty pickups (F-150, Silverado 1500, Ram 1500, Tundra).

What’s NOT covered

Primarily commercial-use vehicles even within weight limits.
Vehicles over 10,000 lbs GVWR (most F-250/F-350, Silverado 2500/3500, Ram 2500/3500).
Heavy-duty commercial trucks.
Cargo vans over 10,000 lbs.

For excluded vehicles, CCPA and Magnuson-Moss provide alternative civil-court remedies.

The “primarily for personal use” requirement

C.R.S. § 42-10-102 requires the vehicle to be for “personal, family, or household use.” Commercial use disqualifies.

Common excluded-vehicle defects

For heavy-duty pickups outside § 42-10-102:

Diesel emissions system failures (DEF, DPF, SCR) — particularly altitude-stressed in Colorado.
Heavy-duty transmission failures.
Fuel pump failures.
DEF heater / sensor failures.

These defects can be pursued under CCPA and Magnuson-Moss.

Mountain operation considerations

Colorado mountain operation creates distinctive heavy-duty pickup failure patterns:

DEF crystallization at altitude.
DPF regeneration stress on long mountain climbs.
Transmission cooler stress with towing on Rocky Mountain grades.
Brake stress on mountain descents.

Magnuson-Moss as primary tool

For vehicles outside the 10,000-lb threshold:

Magnuson-Moss — primary tool.
CCPA — mandatory § 6-1-113(2)(b) fees + $500 penalty + bad-faith treble.

Bottom line

Colorado uses the standard 10,000-lb GVWR threshold. Heavy-duty pickups outside § 42-10-102 remain covered by CCPA and Magnuson-Moss — both providing strong fee provisions.

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