During the summer months of 2020, we became aware of an issue causing all kinds of havoc across GM’s line-up of V8 vehicles. A vendor had supplied GM with a batch of faulty valve springs that ended up being used on the L87, LT1, LT2, LT4, L82, L84, and L8T engines.
GM issued a warning in a service bulletin that owners with a bad valve spring may experience a check engine light along with the engine misfiring and making other strange noises.
Unfortunately, some engines with faulty valve springs suffered catastrophic failure as the spring’s break-up caused the valve to drop into the cylinder like these photos recently shared on Facebook from Michael Crummer. The Torch Red Corvette Convertible is shown on a lift inside a Texas Chevrolet dealership with its LT2 engine dropped from the rear of the car. Michael comments that the Corvette had just 57 miles on it when calamity struck. 57 miles…
The original GM service bulletin for the faulty valve springs suggested that GM had a handle on the issue by knowing that the bad parts were used in production between June 1 to September 15, 2020. GM would then extend that window through October 7th. And yet, here were are in January with a 57-mile Corvette appearing to be afflicted with the same issue.
The good news for the owner of this Corvette is that his warranty will pick up the bill, but it sure would be nice if GM could make this issue go away permanently.
Michael Crummer / Facebook
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