I WAS WORKING ON GRAND AM GT 3.4L GT. I REPLACE THE HEAD GASKETS AND REPAIR 2 CYLINDER ROCKER ARM TORQUE EVERYTHING AND REINSTALL ALL THE PARTS. I RUN THE ENGINE FILL THE COOLANT AND BLEED IT WORKS VERY FINE FOR 2 HOURS. SECOND DAY I RUN THE ENGINE RUNS VERY FINE NO SHAKE NO NOICE I JUST FIND VERY SMALL LEAK FROM THE FUEL PRESSURE REGULATOR AND WRITE ON MY NEXT ORDER LIST THEN VEHICLE JUST STOPED. NOW I HAVE CRANKING SOUND LIKE ENGINE WANNA START BUT NOT RUNING. WHAT COULD BE.? THANKS

Says here

https://www.2carpros.com/questions/sequence-to-tighten-head-bolts-and-rocker-arms-also-torque-specs

https://www.google.com/search?q=torque+spec+for+a+2003+Pontiac+Grand+AM+3.4+head+gasket+bolts

..

Oldsmobile Torque Specs - GbodyOlds.com

www.gbodyolds.com/forum/showthread.php?754-Oldsmobile-Torque...
Feb 7, 2013 - 2 posts - ‎2 authors Oldsmobile Small-Block Engines Cylinder Head Bolts (1/2in. bolt) 130 ft. lbs. Cylinder Head ... Rocker Arm Pivot Bolt 25 ft. lbs. Rod Bearing ...

Rocker Arms - AutoZone

www.autozone.com/...Cutlass...1987.../Rocker-Arms/_/P-0900...

AutoZoneGM Cutlass RWD 1970-1987 Repair Guide ... To remove the rocker arms from the shaft, the nylon arm retainers must be removed. ... 7: Engine valve system, 260, 307, 350, 403 Oldsmobile built engines ... Unfasten the two bolts that attach the rocker arm pivot to the cylinder head. ... Torque the retaining bolts to 25 ft. lbs.

I could not answer this any better than what I have found online. Here is a guy that has posted removal and re-installation in great detail as well as great photos.
LIM and Head Gasket Change Walkthrough FAQ GrandAmGT com Forum

I give all the credit for this answer to the poster.

5 million made.
it's in the fsm book
posted here over 300 times.
are you asking , how to set rockers ?

chapter 9 page 27
------------------text fsm---------------------
INSPECTION
Inspect the pivot surface area of each rocker arm.
Replace any that are scuffed, pitted, cracked or
excessively worn.
Inspect the valve stem tip contact surface of each
rocker arm and replace any rocker arm that is deeply
pitted.
Inspect each push rod end for excessive wear and
replace as required. If any push rod is excessively
worn because of lack of oil, replace it and inspect the
corresponding hydraulic tappet for excessive wear.
Inspect the push rods for straightness by rolling
them on a flat surface or by shining a light between
the push rod and the flat surface.
A wear pattern along the length of the push rod is
not normal. Inspect the engine cylinder head for
obstruction if this condition exists.
INSTALLATION
NOTE: This procedure can be done with the engine
in or out of the vehicle.
(1) Lubricate the ball ends of the push rods with
Mopart Engine Oil Supplement, or equivalent and
install push rods in their original locations. Ensure
that the bottom end of each push rod is centered in
the tappet plunger cap seat.
(2) Using Mopart Engine Oil Supplement, or
equivalent, lubricate the area of the rocker arm that
the pivot contacts. Install rocker arms, pivots and
bridge above each cylinder in their originally position
(Fig. 23).
(3) Loosely install the capscrews through each
bridge.
(4) At each bridge, tighten the capscrews alternately,
one turn at a time, to avoid damaging the
bridge. Tighten the capscrews to 28 N·m (21 ft. lbs.)
torque.
(5) Install the engine cylinder head cover (Refer to
9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION).

Hi
these are the things you need to do.

Allow the car engine to cool by letting the car sit idle for several hours. Lift the hood and disconnect the negative battery cable. Remove the upper intake manifold assembly. Using the spark plug tool, remove the spark plugs. Disconnect the spark plug wires. This can be accomplished by pulling straight out on the boot. Locate the cylinder head and disconnect the closed ventilation system and evaporation control system from it.

Locate the left cylinder head cover and remove the DIS coil. Using the wrench, loosen and remove the rocker arm cover mounting bolts. Carefully remove the rocker arm cover from the cylinder head. Remove the gasket cover. Using the screwdriver, gently nudge the gasket to remove it from the seating area.

Using the automotive cleaner, remove any particles, oil or other remnants that were left by the old gasket. Place the new gasket in the gasket seating area. Using the torque wrench, tighten the rocker arm cover fasteners. Reverse the steps used to remove the parts

Complete the maintenance by adding oil to the car and allowing it to run idle for 10 to 15 minutes.

3.9L, 5.2L, and 5.9L Engines To Remove:
3.9L Engine

1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
2. Remove or disconnect the following:
   • Battery negative cable
   • Coolant
   • Intake manifold-to-alternator bracket support rod
   • Alternator
   • Closed crankcase ventilation system
   • Evaporation control system
   • Air cleaner, air in-let hose and resonator
3. Release fuel system pressure.
4. Remove or disconnect the following:
   • Fuel supply line from the fuel rail
   • Accelerator linkage and, the speed control and transmission kickdown cables (if equipped)
   • Distributor cap and wires
   • Coil wires
   • Coolant temperature sending unit wire
   • Heater hoses and bypass hose
   • Vacuum supply hoses from the intake manifold (3.9L Engine)
   • Fuel injector harness and secure out of the way (3.9L Engine)
   • Cylinder head covers and gaskets
   • Intake manifold and throttle body as an assembly
   • Exhaust manifolds
   • Rocker arm assemblies and push rods, and identify to ensure installation in original locations.
   • Head bolts from each cylinder head and remove cylinder heads
   • Spark plugs

To Install:

1. Install or connect the following:
   • New cylinder head gaskets into position on the cylinder block
   • Cylinder heads onto head gaskets and cylinder block
2. Tighten all cylinder head bolts, starting at top center and in sequence
   1. Torque to: 50 ft. lbs. (68 Nm)
   2. Repeat and Torque to: 105 ft. lbs. (143 Nm)
   CAUTION
   When tightening the rocker arm bolts, ensure that the piston in that cylinder is NOT at TDC.
   
3. Install or connect the following:
   • Push rods and rocker arm assemblies in their original positions.
     1. Torque to: 21 ft. lbs. (28 Nm)
   • Intake manifold and throttle body assembly
   • Exhaust manifolds
   • Spark plugs
     1. Torque to: 30 ft. lbs. (41 Nm)
   • Coil wires
   • Coolant temperature sending unit wire
   • Fuel injector harness (3.9L Engine)
   • Vacuum supply hoses to the intake manifold (3.9L Engine)
   • Heater hoses and bypass hose
   • Distributor cap and wires
   • Accelerator linkage and the speed control and transmission kickdown cables
   • Fuel supply line.
   • Alternator and accessory drive belt.
     1. Alternator bolt - Torque to: 30 ft. lbs. (41 Nm)
   • Intake manifold-to-alternator bracket support rod and bolts
   • Cylinder head covers
   • Closed crankcase ventilation system
   • Evaporation control system
   • Resonator assembly (3.9L Engine), air in-let hose and air cleaner
   • Heat shields
     1. Torque to: 30 ft. lbs. (41 Nm)
   • Coolant
   • Negative battery cable.

2.2L Engine & 2.4L Engines
These engines are not equipped with rocker arms. The camshafts directly actuate the valves.

3.1L Engine & 3.4L Engines
When install or connect the check the following:
- Pushrods and the rocker arms. Torque the bolts to 24 ft. lbs. (32 Nm). - Rocker arm cover using a new gasket. Torque the rocker cover bolts to 89 inch lbs. (10 Nm).
- Heater bypass pipe. Torque the screw at the water pump to 106 inch lbs. (12 Nm), the bolt at the cylinder head corner to 18 ft. lbs. (25 Nm) and the nut to 18 ft. lbs. (25 Nm).


About the INTAKE MANIFOLD...
- Intake manifold nuts and bolts and tighten to 89 inch lbs. (10 Nm)
- Pushrods and rocker arms. Torque the bolts to 89 inch lbs. (10 Nm) plus an additional 30 degree turn. - Lower intake manifold. Apply sealant to the threads of the bolts and torque the bolts to 115 inch lbs. (13 Nm).





Exploded view of the upper and lower intake-3.1L & 3.4L engines




Fig. Lower intake manifold tightening sequence-3.1L & 3.4L engines

Hope help.

for cylinder head the torque is : step 1 55 ft-lb, step 2 65 ft-lb, step 3 85 ft-lb. Rocker arm stud nut or bolt is 17 to 23 ft-lb. and valve cover bolt 72 to 108 in-lb.

2.2L (VIN 4) Engine

1. Before servicing the vehicle, refer to the precautions section.
   
2. Relieve the fuel system pressure.
   
3. Drain the cooling system.
   
4. Remove or disconnect the following:
   
   • Accessory drive belt
     
   • Air cleaner outlet duct
     
   • Engine mount
     
   • Intake manifold
     
   • Exhaust manifold
     
   • Engine Coolant Temperature (ECT) sensor electrical connector
     
   • Power steering pump
     
   • Radiator inlet pipe
     
   • Spark plug wires
     
   • Rocker arm cover
     
   
   NOTE Whenever valve train components are removed, keep them in order for installation purposes.
   
   
   • Rocker arms and pushrods
     
   • Lifters
     
   • Alternator rear brace and the alternator
     
   • Power steering pump
     
   • Radiator inlet pipe
     
   • Ignition coil assembly
     
   • Accessory bracket
     
   • Spark plug wires
     
   • Cylinder head bolts
     
   
   WARNING Two sizes of bolts are used; note the location of each.
   
   
   • Cylinder head
     
5. Inspect the cylinder head and block surface for cracks, nicks, heavy scratches and flatness.
   

Cylinder head torquing sequence—2.2L (VIN 4) engine

1. Install or connect the following:
   
   • Cylinder head with a new gasket and new cylinder head bolts. Torque the long bolts, in sequence to 46 ft. lbs. (63 Nm) and the short bolts to 43 ft. lbs. (58 Nm) plus an additional 90 degree turn on all the bolts.
     
   • Lifters
     
   • Pushrods and rocker arms. Torque nuts to 22 ft. lbs. (30 Nm).
     
   • Rocker arm cover. Torque the bolts to 89 inch lbs. (10 Nm).
     
   • Spark plug wires
     
   • Accessory bracket
     
   • Ignition coil assembly
     
   • Radiator inlet pipe
     
   • Power steering pump. Torque the bolts to 22 ft. lbs. (30 Nm).
     
   • ECT sensor electrical connector
     
   • Exhaust manifold. Torque the nuts to 118 inch lbs. (13 Nm).
     
   • Alternator. Torque the bolts to 37 ft. lbs. (50 Nm).
     
   • Intake manifold. Torque the bolts to 17 ft. lbs. (24 Nm).
     
   • Engine mount. Torque the bolts to 55 ft. lbs. (75 Nm).
     
   • Air cleaner outlet duct
     
   • Accessory drive belt
     
   • Negative battery cable
     
2. Refill and bleed the cooling system.
   
3. Start the vehicle and inspect for leaks.
   

Gasket is between cylinder head and engine block. If u have oil in the coolant or vice versa, or overheating then u most likely have a bad head gasket