Do trucks equipped with 5.3's come with a 2 bar map?
 

Hey guys, I was wondering if trucks that are equipped with a 5.3 come with a 2 bar map? I recently bought a 5.3 from a junkyard for a project and I noticed the map sensor on the trucks manifold is the same one as my cobalts ss map sensor. Does that mean the motor already has a 2 bar on it?

Any help will be appreciated!

I'm pretty sure they aren't 2-bar. I know the 1 & 2 bar look the same, but are different internally.

no, 1 bar

As mentioned they look the same, but if you check the PN on the sensor they are different.

Ok I snapped two quick pics

This is the one on my truck manifold
Attachment 141881

This is the one that came off of a cobalt SS
Attachment 141882

According to the part number its a 2 bar, does that mean the motor I bought from the junkyard had some mods to it?

Thats odd, I dont know the part # at the moment. I have one on my truck but I am not home. Almost makes me wonder if the motor used to be FI?

mine was a 1.5bar

Yeah, it makes me wonder too! Ill have to take a look at the injectors and see what they are.

Sorry man, but the both of the ones you have are 1 bar... Here is a pic of a stock 1 bar on the left and the Ion Redline 2 bar that is what everyone uses for 2 bar direct replacement.

BTW, the 2 bar MAP PN 12580698 is now superseded with 12615136 according to gmpartsdirect.com ;)

Attachment 141883

Thank you! I just called my buddy that gave me the cobalt sensor and he said he gave me the wrong one, Im getting the right one tomorrow from him :)