NO. A timing light will not work on that engine. You must have an obdII engine scanner to set the timing on that year.
It does not have a timing belt, It has a chain and it don't need changed.
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.
It is set by the computer. As long as you put the distributer in at the correct location the computer does the rest.
You need a timing light
On a Manual Transmission Located on Left Hand Side of Trans. As for the Automatic Transmission your on your own. Hope This Helps.
You need a timing light
you need a scanner
the LeSabre has a timing CHAIN. It does not need to be replaced. (unless you broke it :)
Need to replace the ingnition module in the Distributor.
There is no need or any way to "time" a 2.7L with a timing light.
you cannot adjust the ignition timing on this car. a manual will help if you need to set cam timing
not for changing the belt. however you will need it for the ignition timing once you have replaced the timing belt