2003 Pontiac Grand Am pushrod length 3.4 L - 2003 Pontiac Grand Am

collapsed lifter and or worn cam lobe .

https://www.youtube.com/watch?v=21swnCbDCKk

has different length pushrods.if not in correct locations will damage valves and cause compression issues. a hollow sounding crank?

The intake pushrods and exhaust pushrods are different lengths. To distinguish the different pushrods, paint has been used, although this paint may be hard to identify after prolonged use. The intake pushrods are color-coded orange and are 6 in. (152mm) long. The exhaust pushrods are color-coded blue and are 63/8in. (162mm) long.

Here is a picture of the cylinder marking:

On a 3.1L and 3.4L engine the Intake pushrods are 5 3 / 4 inches long and exhaust pushrods are 6 inches long.

or you getting the right fuel pressure? check fluid filter, check pressure regulator, check spark plugs to see if they are soaking wet if they or wet take them all out and pull fuel pump relay out turn engine over and blow all gas out the plug holes. install plugs and relay and try start again , check engine compression, check coolant senor ,check cam sensor

The dealer or a local junk yard are the two best resources you have locally.

long ones are the exh shorter ones are the intake

Found on the web:

the coil pack it's self should be numbered Starting left to right across the front it is 2, 4, 6 and across the back left to right it is 1, 3, 5. Emissonwiz (only the OHV, pushrod V6 was avaliable in 99 unless you had the 4 cylinder)