S10 5.3 Wiring - Is it really this straightforward?
S10 5.3 Wiring - Is it really this straightforward? Hey Guys and Gals,
I have been trying to get my wiring harness squared away, and I need to make sure I understand those wiring stickies correctly.
Anyway, I have a 2002 5.3 / 4L60E pullout with harness, fuse box, and PCM. Comparing the 5.3 Fuse box with my 2.2 4 cylinder fuse box, they are very similar (see pictures). Both fuse boxes use the 5 big connectors that plug in from underneath, and share similar fuse layouts.
So here is my question: In order to mate the 5.3 to the truck's factory wirng, is it as simple as unplugging the 2.2 engine harness from underneath the box and plugging in the 5.3 engine harness (C101, IIRC)? As long as the fuses all match the 5.3's arrangement, will it work? I know that there are a couple other wires to hook up, like the fuel pump wire, one for the A/C, and one for the tranny, (all from the other connectors), but is this the gist of it?
Sorry for the long post, I just need to make sure that I understand this thing correctly.
TIA for anyone that can clarify!
Brent
Link to Fuse Box Diagrams and Pictures
I have been trying to get my wiring harness squared away, and I need to make sure I understand those wiring stickies correctly.
Anyway, I have a 2002 5.3 / 4L60E pullout with harness, fuse box, and PCM. Comparing the 5.3 Fuse box with my 2.2 4 cylinder fuse box, they are very similar (see pictures). Both fuse boxes use the 5 big connectors that plug in from underneath, and share similar fuse layouts.
So here is my question: In order to mate the 5.3 to the truck's factory wirng, is it as simple as unplugging the 2.2 engine harness from underneath the box and plugging in the 5.3 engine harness (C101, IIRC)? As long as the fuses all match the 5.3's arrangement, will it work? I know that there are a couple other wires to hook up, like the fuel pump wire, one for the A/C, and one for the tranny, (all from the other connectors), but is this the gist of it?
Sorry for the long post, I just need to make sure that I understand this thing correctly.
TIA for anyone that can clarify!
Brent
Link to Fuse Box Diagrams and Pictures
Originally Posted by 1987earthquake
go to alldatadiy.com and get a subscription for both vehicles and then compare the pinouts on the connectors.
TECH Apprentice
Joined: Aug 2005
Posts: 347
Likes: 0
From: Dover Arkansas
Yeh, that would be my suggestion too, AlldataDIY.com. Thanks LS1MCSS. The pinouts aren't going to be the same I don't believe. My guess is you would have to move around a few pins from the S10 connector to the 5.3 connectors on the fuse box. I just left my 5.3 engine harness intact and used the 5.3 UFB. But my 96 Blazer didn't have the UFB. So I had to run wires from Blazer harness connectors to connectors on the UFB. Yours should be easier. Good luck.
