The Second Department, in a full-fledged opinion by Justice Leventhal, determined defendant, by pleading guilty, had forfeited his right to appellate review of (non-constitutional) rulings about the admissibility of his refusal to submit to a chemical test (DWI) after his involvement in a car accident. The court explained why some appellate issues survive a guilty plea and some don’t:

The Court of Appeals has repeatedly observed that “a plea of guilty generally marks the end of a criminal case, not a gateway to further litigation'” … . A guilty plea signals the defendant’s intention not to litigate the issue of his or her guilt, “and necessarily involves the surrender of certain constitutional rights, including the right to confrontation, the privilege against self incrimination and the right to trial by jury” … . A guilty plea not only encompasses a waiver of the specific rights attached to a trial, but also “effects a forfeiture of the right to renew many arguments made before the plea” … . “This is so because a defendant’s conviction rests directly on the sufficiency of his plea, not on the legal or constitutional sufficiency of any proceedings which might have led to his conviction after trial'” … . The forfeiture occasioned by a guilty plea extends to a variety of claims, including those premised upon a failure to provide CPL 710.30 notice … , the statutory right to a speedy trial … , the exercise of alleged discriminatory peremptory challenges … , and adverse rulings on Sandoval and Ventimiglia/Molineux applications … .

However, not every claim is forfeited by a guilty plea. The issues that survive a valid guilty plea generally relate either to jurisdictional matters, such as an insufficient accusatory instrument, or to rights of a constitutional dimension that go to the heart of the criminal justice process … . “The critical distinction is between defects implicating the integrity of the process, which may survive a guilty plea, and less fundamental flaws, such as evidentiary or technical matters, which do not” … . Examples of rights of constitutional dimension which are not forfeited by a guilty plea include the constitutional right to a speedy trial, the protection against double jeopardy, and the competency of the defendant to stand trial … .

Among the limited group of issues that survive a valid guilty plea and may be raised on a subsequent appeal are those relating to the denial of a motion to suppress evidence under CPL 710.20 … . The Legislature has preserved such claims for appellate review through the enactment of CPL 710.70(2) … . CPL 710.70(2) expressly grants a defendant a statutory right to appellate review of an order denying a motion to suppress evidence “notwithstanding the fact” that the judgment of conviction “is entered upon a plea of guilty.” However, the statutory right to appellate review created by CPL 710.70(2) applies to orders which deny a motion to suppress evidence on the grounds enumerated by CPL 710.20 … .  Athough CPL 710.20(5)  authorizes a defendant to move to suppress evidence of “a chemical test of the defendant’s blood administered in violation of the provisions” of Vehicle and Traffic Law § 1194(3) or “any other applicable law,” that provision is not implicated here. In this case, the defendant did not move to suppress the results of a chemical test of his blood. Indeed, the police did not perform a chemical test upon the defendant. Rather, he moved to preclude the People from admitting testimony of his refusal to submit to a chemical test. Such a motion cannot be characterized as one seeking suppression under CPL 710.20(5). Accordingly, the defendant does not have a statutory right to appellate review of the County Court’s ruling permitting the introduction of evidence of his refusal to submit to a chemical test.

Nor is the defendant’s claim that the County Court erred in ruling that the People would be permitted to introduce evidence at trial of his refusal to submit to a chemical test a claim of constitutional dimension, or one that bears upon the integrity of the judicial process. Rather, the court’s determination relates to an evidentiary or technical matter. People v Sirico, 2015 NY Slip Op 07862, 2nd Dept 10-28-15