Fuse Pull?

[Chad's ZL1]

Has anyone done the fuse pull on their ZL1 for the fuel trim. I'm Ordering my Vmax Throtttle body and my Roto fab intake and was just gathering thoughts?
Thanks...................and is it the same exact fuses to pull like the SS

[Mil]

Originally Posted by Chad's ZL1

Has anyone done the fuse pull on their ZL1 for the fuel trim. I'm Ordering my Vmax Throtttle body and my Roto fab intake and was just gathering thoughts?
Thanks...................and is it the same exact fuses to pull like the SS

Yes; I believe so that they're the same. I've done this for my ZL1 .. you want to pull fuses #5, and 20 from the fuse box compartment in the engine bay passenger side. No need to purchase a fuse puller; should be one provided inside the fuse box.

[13ZL1BLove]

What are the benefits of pulling these fuses?

[SamHouseIII]

Originally Posted by 13ZL1BLove

What are the benefits of pulling these fuses?

resets the fuel trim calculations in the ECM.

[13ZL1BLove]

So it's like a tune but not ?

[mmarx82]

Originally Posted by 13ZL1BLove

So it's like a tune but not ?

No, there is a high and low fuel trim level in the computer but it gets stuck on the low levels when you get bad or improper octane fuel. Even if you get good or proper fuel and go 10K miles after that it will never go back to the high trim levels so the fuse pull would then be required to reset the ECM and thus allow you back into the high trim levels.

[Deke736]

I talked to Ted Jannetty about this and he told me that the 2012+ Camaros don't have the fuel trim adjustment issues that the earlier years had. He said that there is no reason to do the fuse pull on ZL1's since they are able to adjust themselves to the correct fuel table, even if you run lower octane gas. I specifically brought this up because I have a 93 octane tune but there are many stations around me that only carry 91 and I was worried that I would need a second tune or do the fuse pull everytime I had to fill up with lower octane fuel.

[SamHouseIII]

Originally Posted by Deke736

I talked to Ted Jannetty about this and he told me that the 2012+ Camaros don't have the fuel trim adjustment issues that the earlier years had. He said that there is no reason to do the fuse pull on ZL1's since they are able to adjust themselves to the correct fuel table, even if you run lower octane gas. I specifically brought this up because I have a 93 octane tune but there are many stations around me that only carry 91 and I was worried that I would need a second tune or do the fuse pull everytime I had to fill up with lower octane fuel.

Great Info

[SS Jett]

Originally Posted by Deke736

I talked to Ted Jannetty about this and he told me that the 2012+ Camaros don't have the fuel trim adjustment issues that the earlier years had. He said that there is no reason to do the fuse pull on ZL1's since they are able to adjust themselves to the correct fuel table, even if you run lower octane gas. I specifically brought this up because I have a 93 octane tune but there are many stations around me that only carry 91 and I was worried that I would need a second tune or do the fuse pull everytime I had to fill up with lower octane fuel.

That is nice to know. Thank you

[danvillekidd]

According to GM, only the L99 SS had the issue with not relearning. What I haven't seen is how long the relearn process is, 5, 50, 100, miles or more? So if you want it to relearn instantly you could still pull the fuses, it won't hurt anything. This is the fuses to pull according to the GM info: Normally this reset can also be accomplished by pulling the 2 main ECM fuses (F13R and F20U) shown in the ECM Power, Ground, MIL, and Serial Data Schematic (SI Document # 2209065).

[Chad's ZL1]

thanks for the info guys