I cant seem to find anything on coil pack order i have it setup like this from left to right facing the engine 1-4,6-3,2-5 and all my wires are correct but i try to start my car and it backfires i dont know if i have them out of order or if its another issue


****This is after i replaced my water pump and put everything back together

 

I believe the firing order is 1, 2, 3, 4, 5, 6.
1, 3, 5 left bank
2, 4, 6 right bank
Coil packs left to right 1, 4, 2, 5, 3, 6
When looking at the engine cylinder 1 is front left, cylinder 2 is front right.
Is the CEL on?

 

Yes its on but i have not been able to read a code due to car not being able to drive(meaning i cant take it to autozone or get there to buy one), I appreciate the info i will try the coil pack order and hopefully that's the fix. ill let you know if it works,

 

You don't need any equipment to read the codes. Just do an internet search for "GM flash trouble codes" to find out how to do it with just a paper clip or a piece of wire.

 

so i rearranged the coil packs from left to right 1-4, 2-5, 3-6 tried to start it the car cranks but doesn't turn over. i will try the paperclip tomorrow to check the codes i appreciate the advice guys this has got me angry and confused at the same time

 

like this

 

With the car off, on the diagnostic terminal jumper the ground and diagnostic terminal, will be the last 2 on the right on the top row. turn the ignition to the on position, don't crank it. The first code you'll get is 12, this just lets you know it's in diagnostic mode. Slow flashes = 10, rapid flashes = 1, each code will repeat 3 times. Turn off the car when code 12 repeats.

 

Thanks guys I got her up an running but I have one more issue. My coolant is boiling now here are the things I have done to fix the issue. I replaced the radiator, coolant reservoir, water pump, thermostat, and flushed the system. I don't smell oil or see any white smoke so I'm hoping it's not a head gasket

 

How long after you start it before it starts boiling?

Borrow a coolant pressure tester from a chain parts store.

Search youtube for How to check for a blown head gasket with a coolant pressure tester.

 

About 30 minutes after it begins to boil, ok I'll check that out too