Terry Swensen

It was all plants, I asked. They put out 65 trucks per hour per plant and I dunno what percentage have V8's. This was over a 105 day period according to GM. That's a lot of trucks and that's not including Cadillacs, Camero's Corvettes, Suburbans, Tahoe's etc.

So I went in and talked to the service manager today. He didn't deny that he knew about the TSB. He said he has only had one that he had to repair so far. He said corporate GM said if a spring hasn't broke by 300 miles they probably won't break. He also said GM told them to run every new vehicle with a V8 for 4.5 hrs at 1800 rpm. If no springs break the the engine should be good to go.

Wow, amazing. Funny but that's the same thing mine said about the collapsed lifter issue on my 2008 Silverado. He said he had never heard of any problems. Must be the required response. Plausible deniability.

You might express your concern to the service manager just to see what there response is. That's what I'm planning to do when I take mine in the for the first oil change.

Your build date is on the inside bottom of your driver's door frame. I've seen a 1200 mile truck have this issue. There's probably more out there but unless you see posts online somewhere,you don't here about it. My build date is 8/2020 and have had no trouble yet at 900 miles while a same truck built at the same plant with the same build date had a broken valve spring.

Mine was built at the same date. 900 miles so far and no issues. Just wondering,was your built in the U.S. or Mexico? Don't know if it makes any difference but it's possible I guess.