Tech bulletin's out, but no warranty. Some motors destroyed. You can hear the ticking sometimes. Didn't want to buy engine, so I had it torn down. Looking at it as defective or weak point. Should be dealer problem to fix.
At 1650 miles my check engine light lit. I called my local Gmc dealer they had me bring it in.They determined torque converter came apart and metal shavings went into transmission valve body. Dealer wanted to flush transmission. I demanded a fresh transmission and they flushed lines and replaced transmission. Today 7/30/2016 my check engine light lit once again. have bad shaking at idleand very hard downshifting. Monday its going back to GMC dealer for more work. I have always owned Chevrolets and have had some that ran fine for 200.000 miles. This 2015 has been the most expensive truck I have owned and the most unreliable truck I have ever owned. Will not buy another Chevrolet product ever.
- richardsnj,
Manahawkin, NJ, US
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Truck only 6 yrs old, bought brand new, transmission kapot right after warrenty expired. Uuuuugggghhhhh!
- terrble2rn, Billings, US