THE TIMING IS COMPUTER CONTROLLED. It requires an engine scanner to set the timing on that engine.
That requires an OBDII engine scanner to do that. The ignition timing is controlled by the computor. If you have not moved are removed the distributor then there's no reason to fool with the timing.
Adjust your timing
To set the timing on a 1994 GMC Suburban you need to warm up the engine while the car is either in park or neutral. Next, you adjust the distributor until the timing is set to where you want it.
YOU can if you have an engine scanner. if you have not fooled with the distributor then there is no need to adjust the timing because it is controlled by the ECM / computer. It will adjust it's self.
Warm it up,....un-plug the pip conn.under the glove box(tan/black),adjust the dist.to read zero degrees before top-ded cntr,..
The 97 Chevy Suburban doesn't have a timing belt.
no it has a timing chain.
Timing Chain
IT DOES HAVE A TIMING CHAIN
The timing marks are located on the flywheel and are visible through the access hole in the transaxle case. On manual transmission vehicles, the timing cover plate must be removed in order to view the timing marks and adjust the timing.
how do i adjust the ignition timing on a 1990 suzuki gsx 750f
It does NOT have a timing belt, That engine has a timing chain and gears.