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.
No it does not.
R134a
low radiator fluid or a possible bad thermostat.
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.
On the driver's side next to the distributor; hard to get to.
The 1997 Chevrolet Suburban 2500 has a 4L80-E 4-speed automatic transmission. It was are only used in Chevrolet and GMC vehicles.
tRe dleplace IAC Valve
take off brakes pull roter off.
Located inside fuel tank
Fuel filter is mounted on the frame near the rear axle.
Need more detail about your question. We don't understand your question. What are you asking.
Check the firing order, you may have some crossed wires.