What is the timing on a 1995 GMC k1500 5.7L V8?

The timing for a 1995 GMC K1500 5.7L V8 is not a single number. It's not set with a degree adjustment like older engines. Instead, it's controlled by the engine's computer (PCM) using the Crankshaft Position Sensor (CKP), Cam Position Sensor (CMP), and other sensors to determine the optimal ignition timing based on engine load, speed, and other conditions.

There's no "set" timing you can adjust manually like on a distributor-equipped engine. Any attempt to adjust the timing on this engine would require specialized tools and knowledge of the engine's computer system, and would likely lead to damage if done incorrectly. If you suspect a timing issue, it's best to have it diagnosed by a qualified mechanic using diagnostic tools that can read the data from the PCM.