swap 3400 - Third Generation Forum

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swap 3400
Monday, July 08, 2013 5:03 PM











I'm doing the swap
the engine is from a grand am gt 2000
my sunfire gt 2000 is also

how it works for the wiring diagram
do use the harness grand am and pcm

thanks





Re: swap 3400
Monday, July 08, 2013 5:11 PM
Some users are going to say go completely 2000+ wiring and run an impala flash, and others, like me, will say piggyback the PCM's.


- Your not-so-local, untrained, uncertified, backyard mechanic. But my @!#$ runs
Re: swap 3400
Monday, July 08, 2013 5:42 PM
Can you explain to me what is a flash impala
sorry I do not speak English .. but I understand very well
but there is something I do not understand

piggyback the PCM's??
is a reprogramming

thanks



Re: swap 3400
Monday, July 08, 2013 6:26 PM
An Impala flash means reprogramming the car's computer to think it's an Impala. Piggybacking is going to involve wiring up parts of the J-body pcm and parts of the grand-am pcm, leaving the parts that are controlled by the other computer not hooked up. I haven't done it, but there are several others that can help you further.
Re: swap 3400
Monday, July 08, 2013 6:44 PM
then theres me that runs just the 3400 pcm, no bcm, aftermarket gauges. And flashed as a 98 monte carlo.
Re: swap 3400
Tuesday, July 09, 2013 6:39 AM
The language barrier here may cause some misunderstandings, but here is the deal:

For wiring, you will need the wiring diagram for both cars. Strip from the Sunfire harness everything that goes to the engine and computer. These wires will be replaced/spliced with wires from the 3400. Strip from the Grand Am harness everything that does not go to the engine and computer.

Get a vin# from a 2000-2002 Impala with the 3400, and have your Grand Am computer reprogrammed to the Impala program. This will allow the computer to run all of your Sunfire gauges properly. You will need to have the automatic transmission portion of the program removed (by someone with HPT or similar), and the anti-theft disabled.



I'm cleaning out my garage!
Billet upper mount for 3rd gen V6 swap!


Re: swap 3400
Tuesday, July 09, 2013 3:21 PM
ok thanks

Where can I find the wiring diagram





Re: swap 3400
Wednesday, July 10, 2013 6:18 AM
Francky Sun wrote:

ok thanks

Where can I find the wiring diagram
I just went on ebay and bought the factory service manuals for the vehicles involved in my swaps, but the C100 pinout for the J-body is in the sticky. Somewhere I have scans of a few vehicles, but I'm not sure I have the one you need. I'll look around. I would search in this forum, because I believe I've posted some of them before.



I'm cleaning out my garage!
Billet upper mount for 3rd gen V6 swap!


Re: swap 3400
Wednesday, July 10, 2013 2:13 PM
ok thank you
if I understand
I need the following parts

engine harness -grand am
pcm engine- grand am
fuse box -sunfire
spinning inside- sunfire
find diagrams for ploguer it all together



Re: swap 3400
Thursday, July 11, 2013 5:48 AM
Francky Sun wrote:

spinning inside- sunfire
find diagrams for ploguer it all together




I'm cleaning out my garage!
Billet upper mount for 3rd gen V6 swap!


Re: swap 3400
Thursday, July 11, 2013 8:24 AM
Unless you wanna run a Megasquirt on it. I happen to know a guy getting rid of one.





i find it amusing that SHOoff has nothing better to do but follow me around & be an unhelpful dick in even cross-forum. - Jon Mick

Re: swap 3400
Thursday, July 11, 2013 10:00 AM
sorry for my English is not great
I try to understand and make me understand
haha



Re: swap 3400
Thursday, July 11, 2013 11:41 AM
SHOoff wrote:

Unless you wanna run a Megasquirt on it. I happen to know a guy getting rid of one.
If it was an MS3X, I'd probably have to scrape the cash up.



I'm cleaning out my garage!
Billet upper mount for 3rd gen V6 swap!


Re: swap 3400
Thursday, July 11, 2013 1:27 PM
I have a question
which party should keep the sunfire
and how should I take that part of the grand am



Re: swap 3400
Friday, July 12, 2013 6:05 AM
Francky Sun wrote:

I have a question
which party should keep the sunfire
and how should I take that part of the grand am
I'm sorry, but I'm really having a hard time with some of your statements.
Please try to explain more about what you are asking, and I will try my best to help.



I'm cleaning out my garage!
Billet upper mount for 3rd gen V6 swap!


Re: swap 3400
Friday, July 12, 2013 5:49 PM
I'll try .its not always easy



Re: swap 3400
Wednesday, July 17, 2013 7:59 AM
Hi - let me help here.

Mr. Quick - he's asking specifically which parts he keeps from the sunfire and which parts he keeps from the Grand Am.

i.e cluster, PCM, BCM, interior harness, engine harness, etc. Whatever's needed to run the car.

-Chris-



-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...
Re: swap 3400
Wednesday, July 17, 2013 9:12 AM
SweetnessGT wrote:

Hi - let me help here.

Mr. Quick - he's asking specifically which parts he keeps from the sunfire and which parts he keeps from the Grand Am.

i.e cluster, PCM, BCM, interior harness, engine harness, etc. Whatever's needed to run the car.

-Chris-
Not sure if he was talking about the engine or the suspension since I had asked about that.




Edited 1 time(s). Last edited Thursday, July 18, 2013 4:41 AM

I'm cleaning out my garage!
Billet upper mount for 3rd gen V6 swap!


Re: swap 3400
Wednesday, July 17, 2013 2:05 PM
SweetnessGT wrote:

Hi - let me help here.

Mr. Quick - he's asking specifically which parts he keeps from the sunfire and which parts he keeps from the Grand Am.

i.e cluster, PCM, BCM, interior harness, engine harness, etc. Whatever's needed to run the car.

-Chris-


thank you for your help
Now there will be someone who can help me



Re: swap 3400
Saturday, July 20, 2013 8:51 PM
Ok buddy, all you need from the grand am is the engine side of the harness and the PCM. The BCM and all interior wiring stays Sunfire. You keep the C100 connector (main engine bay wiring connector) and the engine fuse block from the Sunfire as well.



Re: swap 3400
Sunday, July 21, 2013 4:04 AM
Ok thank you




Re: swap 3400
Sunday, July 21, 2013 4:22 AM
il reste a trouver the wiring diagram lol



Re: swap 3400
Sunday, July 21, 2013 12:58 PM
you should need nothing from the grand am except engine and accesorys and the wiring the only thing inside the grand am you would possibly need to touch is disconnecting the throttle cable if your gonna use it



JBO since July 30, 2001
Re: swap 3400
Sunday, July 21, 2013 5:45 PM
ok I'll check



Re: swap 3400
Thursday, July 25, 2013 1:25 PM
what do you use as a radiator hose
the hose of my sunfire gt not working




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