PCM controlled fans with 2000 5.3 setup.
Thread Starter
Joined: Jun 2006
Posts: 576
Likes: 4
From: Gobles, Michigan
Car: 92 Ttop Z28
Engine: Cammed 6.0
Transmission: T-56
Axle/Gears: Built 10 bolt-3.90s w/ PBR discs
PCM controlled fans with 2000 5.3 setup.
I am helping a friend do the wiring harness for a 5.3 swap into a older carbed car. His engine, PCM, and harness are all from a 2000 5.3 Chevy truck. He wants the PCM to control the electric cooling fans. It appears the 99-02 ls1 PCM and his PCM have critical functions pinned the same, so would it be possible to use pins b42 and r33 like a ls1 PCM, and have the electric fan function turned on in the PCM? If not, is there any way to do this short of switching pcms?
Re: PCM controlled fans with 2000 5.3 setup.
you would have to get a custom tune for it to work. a 5.7 pcm might work but I doubt it. with a custom tune and the correct relay harness the 5.3 pcm will run the fans.
Thread Starter
Joined: Jun 2006
Posts: 576
Likes: 4
From: Gobles, Michigan
Car: 92 Ttop Z28
Engine: Cammed 6.0
Transmission: T-56
Axle/Gears: Built 10 bolt-3.90s w/ PBR discs
Re: PCM controlled fans with 2000 5.3 setup.
He already needs a tune due to removing emissions and stuff plus a cam swap. Nice to know it can be done, but would b42 and r33 be the correct pins to use?
Junior Member
Joined: Apr 2007
Posts: 6
Likes: 0
From: Casper, WY
Car: 83 Z28
Engine: Junkyard 5.3 F1A Procharger
Transmission: 4l60e
Axle/Gears: Moser 9"
Re: PCM controlled fans with 2000 5.3 setup.
I am building a harness for my 2002 5.3 and those are the pins I am using to power my fan relays. If you go to lt1swap.com, everything you need to know as far as PCM pinouts and wiring a stand alone harness are covered.
Thread
Thread Starter
Forum
Replies
Last Post
IROCZDAVE (88-L98)
Engine/Drivetrain/Suspension Parts for Sale
0
Sep 2, 2015 08:49 AM
