GM has seen in various V-8 engine models experience failures of valve lifters, fuel injectors, and other components. The 10-speed tansmissions have been known to fail (overheat), destroying the forward gear gear clutches (made obvious be brown and burnt smelling transmission fluid).
If you experience CHECK ENGINE, engine noise problems, increased oil consumption and/or driveability issues, get a documented repair history underway. California Lemon Law is all about documented warranty repairs.
If you are experiencing improper shifting of the transmission, do not wait. Get it in right away, and keep bringing it back so long as the issue(s) persist.
When do call us at 1-800-225-3666 to start a lemon law claim/case. At the conclusion of the 2nd. repair attempt, but most certainly by the conclusion of the third. You have rights in California! Call us to find out more about the California Lemon Law, and your rights under the statute.