Thread: gxp vs gtp-which one?

i read a post on another website that said a cooler wont help the transmission any because its not a heat issue, its just a matter of parts breaking. And I wanna try and make this car last as my dd for the foreseeable future, so a newer car has more appeal. ive thought about a newer compg but the v8 really appeals to me. anyone owned both? or had extensive experience with both?

04 and 05 were the only years for comp g's. And the none of the tranny failures are due to heat. Imo a tranny cooler is just another place to leak.

Its the same trans as the comp g more or less. And according to all the failures I've read, there all parts issues

These trannys run hot how it is.... a cooler has one benefit with more potential negative benefits. If you want to go fast... GTP w/ mods. Then you can get into a reliability issue in going that route. The GXP like Chris said is fun straight out of the box. Aftermarket for the GXP is scarce and all come with a hefty pricetag. One of the bigger concerns with the GXP is people complain of large oil usage. Reason for this is when DoD is initiated, the inactive cylinders are still getting oil to them. When DoD disengages, it burns the oil. Best way to get around this... get it tuned out. People who had DoD tuned out said they barely lost any fuel mileage, maybe 1-2 mpg.

if you remove the cat the have the DOD, cat over temp program, and rear o2 sensor tuned out then you dont lose any mileage at all.

think im starting to lean compg, but im gonna take a few test drives in the next two weeks to help me make my mind up

Originally Posted by niswander91

think im starting to lean compg, but im gonna take a few test drives in the next two weeks to help me make my mind up

really to make your trans safer just get a cooler, after that if your still nervous look into shift kits, it smooths out the shifts and everything. than look at a trans tune. thats what i am doing.

Buy a pinto and drop a vette engine it, live a little

or a gremlin with a big block in it

as stated, there are GM bulletins out for significant oil usage on the 5.3's with active fuel management. the fix should be covered by GM, and it involves a cover of some sort over the oil control manifold. i think they still have a special policy on it anyways... fuel saving with active fuel management (the department of defense didn't like the term DOD, and made GM change it lol) was from 10-20%, which comes out to 2-4mpg. honestly, i've driven a few trucks with AFM, and it almost never turned the cylinders off, and when it did, i definitely noticed power loss and it took too long to switch back for my taste.

To the OP, GXP w/ a tune and a rear mount turbo. You're welcome.

I'd like a gxp.. for a non raspy aftermarket exhaust.. haha.

Originally Posted by Poil336

as stated, there are GM bulletins out for significant oil usage on the 5.3's with active fuel management. the fix should be covered by GM, and it involves a cover of some sort over the oil control manifold. i think they still have a special policy on it anyways... fuel saving with active fuel management

not covered by gm at all on the ls4

really? huh. i know the shop i work at has at least worked on a gxp for the same issue. they ended up putting a new engine in it, it might have still been under warranty