'03 Suburban stallin.

[Machbane]

I have an '03 Suburban that has started stalling when stopped. I had the codes read and got P0134,P0135, and P1516. The O2 sensor(p0134 & p0135) is easy enough to find and repair. The P1516 code can be either the TAC module or the wiring to it. The question is, just where is the TAC madule? Thanks.

[MT-2500]

What engine?

The throttle position control module is right rear side of engine compartment near fuse block.

Better get a good scanner and good repair manual out for the repair on it.
Let us know how it goes.
Good luck

[Machbane]

The truck has a 5.3l vortec engine. Thanks for trying to help.

[MT-2500]

You are welcome.
Let us know how it goes.

[Machbane]

Checked all the wiring connections. Turns out the problem was a dirty thottle body. I removed it and totally cleaned it and truck runs great.

[MT-2500]

Thanks for posting back how it went.
Good luck