bbowerman

so I have a 2001 silverado 1500 5.3. I was wondering what controls the coil packs is there a ignition control module if so where is it or how does the firing system in these trucks operated? thanks

tfi racing

iTrader: (2)

The PCM below the battery at the left front of the truck does it all,engine,transmission and output to the BCM to control the guages and other functions such as AC and cruise.
No separate module for fuel or spark.

bbowerman

that's what i thought. is there anyway to provide better firing someone told me new performance coil packs don't do much.

1FastBrick

iTrader: (17)

How about telling us what you are trying to accomplish or what problems you might be having.

tfi racing

iTrader: (2)

Unless you are running very high boost at very high RPM,the stock setup in good repair delivers more spark than you will ever likely need.

bbowerman

I was just wondering I dont have anything done to it to make the firing output more just curios.

Mangled03gmc

iTrader: (95)

Coil packs will not do anything. The stockers are HOT. As stated unless your making serious HP, not even worth the swap. Pull them off and paint them red if you want them to look like MSD's lol

dirt track racer 81

iTrader: (45)

Sounds like your wanting to raise the timing up.. Look into getting a tune for your PCM..

dirt track racer 81

iTrader: (45)

You forgot to say "and get a sharpie to write MSD on them."

bbowerman

ha in that case I would paint them a color i like lol like blue or something.