How to set timing on a chevy silverado v6 after the distributor shaft has been changed and motor has been turned over?

Question edited for clarity.
Question moved to model category/

They can only go in one way. The is a notch in the rotor that has to fit on the shaft. It put on wrongly, you can't get the cap on. Take the cap off and try to turn the rotor. It should not move, and be locked in place.

Video

https://www.google.com/search?q=98+chevy+silverado+distributor+rotor+replacement

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there may be a little roll pin broke that holds the gear on bottom of distributor shaft...costs about 50 cents .....fun to change....you have to retime motor to no. 1 by timing marks then re-install distibutor at no. 1 firing position.....i had a 1984 ford ranger that done that to me on opening day of bow season....it also backfired and luckily i had fire extinguisher ...

The 3.8 liter engine has a timing chain. The distributor shaft should be turning if your timing chain is still intact. Have you pulled it out and reinstalled it? Maybe you did not get it seated right.
This must not be a '99 Silverado as shown in the heading? Give a reply back, and explain please. You replaced a fuel pump in the gas tank, and now the distributor shaft is not rotating? There is no plausible relation between the two-please explain.

Check distributor I have a 93 1500 pull cap and trun engine over watch the shaft if nothing turn truck off and check free play on rotor bug shaft

Man your best bet would be to take it to good Toyota mechanic! When it jumps time their hard enough to get back on!

take # 1 spark plug out, turn crank shaft till piston on # 1 reaches top dead center TDC, timing marks on crank shaft should line up, replace distributor making sure rotor points to # 1 spark plug wire.

1st, check to see if the fuel pump runs for 3 seconds when you turn the key to run (not start). If it doesn't run, then check the fuel pump fuse & relay in fuse box under hood, if OK, (spray starting fluid in the intake to see if engine fires at all), if no fire then look towards the ignition as the problem. There are 5 things need to start an engine: 1. fuel (delivered & pressure), 2. air, 3. spark (distributor/ignition module or pickup coil), 4. rotation & timing, 5. compression. any of these that are wrong or not there, the engine fails.

A scan tool is needed to set CAM ******. or OFFSET , you want it set to "0" above 1300 rpm.

Distributor turns clockwise. Number 1 at 5 oclock position. Firing order is 1-6-5-4-3-2

SOUND LIKE FUEL FILTER STOPPED UP.WEAK FUEL PUMP.CHECK FUEL PRESSURE.IT SHOULD BE 60 TO 66 PSI.ALSO CHECK VACUUM LINE GOING TO FUEL PRESSURE REGULATOR.MAKE SURE ITS GETTING VACUUM.IF YOU GAS IN VACUUM LINE GOING TO FUEL PRESSURE REGULATOR.REGULATOR FAULTY.IF YOUR ENGINE IS 4.3 FUEL PRESSURE SUPPOSE TO BE EITHER 41 - 47 PSI AND 58 - 64 PSI