GEN III 5.3L Question
 

alrighty, got a good one for you all,

ok so looking at doing the gen 3 swap, have an 01 motor and ecm, need the harness. have a guy here in town with an 07 (i believe) harness and pcm. will this work on my 2001 motor?

i know the pcm pinouts are different, but i dont know if all the connectors are the same..

thanks in advance.

oh and any advice on the gen 3 swap would be awesome, i have alot of it scienced out but i am alweays ope to suggestions... thanks!

Re: GEN III 5.3L Question
 

Can it be done yes, but if you have a 01 motor with the cable type throttle body, the easiest is to get a 99-02 harness and computer. After 02 there are quite a few changes in connectors and they went to drive by wire(DBW). In my sig there is a link to the LSx FAQ, lots of good reading.

Re: GEN III 5.3L Question
 

well i wouldnt be considering it but the guy is selling me alot of parts for a cheap price and its very tempting. i know dbw can be converted dbc, so thats not the issue, i am more concerned with the connectors and such like you stated...

Re: GEN III 5.3L Question
 

I'd say go for it, to me dbw would be easier than mods for a cable. and swap throttles and sensors

Re: GEN III 5.3L Question
 

Off the top of my head, O2s, Alternator, MAF connectors and then the TPS/IAC vs. DBW with the TAC. Also being it is a 07 it may use separate engine and trans computers with the 58x reluctor wheel on the crank. Even if you get it cheap, I would sell/trade it for a older harness.

Re: GEN III 5.3L Question
 

^^^^^ What he said. The 2007 PCM wont have IAC drivers in it to work with DBC. Find a '99-'02 harness and a 411 PCM and save yourself ALOT of headaches.
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Re: GEN III 5.3L Question
 

Yeah, its just not worth the hassle.

Re: GEN III 5.3L Question
 

Yep don't do it, like they said the comp will not work with a cable TB, Cable throttle body's have iac valves to control idle, that newer computer does not have the hardware to control an iac valve

Re: GEN III 5.3L Question
 

this is what i was thinking...yeah sounds like its not worth the hassle. im gonna buy it and trade/sell it for the correct one, make it easier...

thanks for all the input!!