Encountering Persistent Problems with My Chevrolet Silverado 1500 Z71, While Colorado ZR2 Remained Perfect, Now my 2025 Silverado 1500 ZR2 Displaying a Check Engine Light
In the world of automobiles, brand loyalty often plays a significant role in purchase decisions. However, as Vince, a long-time GM truck owner, discovered, it's essential to balance brand loyalty with a vehicle's performance track record.
Vince's 2024 Colorado ZR2 performed flawlessly for 16,000 miles, but his experience with the 2025 Silverado diesel has been less than ideal. The truck, equipped with a 3.0L Duramax diesel engine, has been plagued by a Diesel Exhaust Fluid (DEF) system fault. This issue, common among owners of the 2025 Chevrolet Silverado 1500 ZR2 with the 3.0L Duramax diesel engine, has triggered the check engine light and limited the truck's top speed to 98 mph.
The DEF system fault is a significant trouble spot, with some owners reporting issues as early as 9,000 miles. The DEF system is crucial for emissions compliance on modern diesel engines, and faults in the system can impact both reliability and usability, particularly for those relying on long-distance travel or off-road capability.
Frustrations extend beyond the DEF system fault, with some owners expressing concerns about GM’s handling of warranty or repair efforts. Additionally, issues with body parts installed by aftermarket companies, such as Rocky Ridge, on Silverado trucks have been mentioned.
However, it's worth noting that GM recently extended the warranty on the 2.7L turbo four-cylinder engine due to its reliability. Josh Wagner, among others with decades of GM truck experience, suggests that Vince should have kept the 2024 Colorado due to the reliability of the 2.7L engine.
Comparatively, other vehicle manufacturers are also facing reliability issues. For instance, many Toyota Tundra's are suffering from serious failures even outside of recalls.
Ownership requires considering dealership accessibility, especially for those who travel or live in remote areas. Switching vehicles frequently can erase fuel economy savings through transaction costs. As such, it's crucial for potential buyers to weigh the pros and cons carefully before making a purchase decision.
[1] Def System Faults Plague 2025 Chevrolet Silverado 1500 ZR2 with 3.0L Duramax Diesel Engine
[2] Chevy Silverado 1500 ZR2 Owners Report DEF System Faults
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