ABCDEFGHIJKLMNOPQRSTUVWXYZ
1
Pin Number (C1 BLUE)
Existing 4.3L Color on pin
5.3L colorOld PurposeNew PurposeTask
2
3unusedPNK/BLKInj 3 control
Move pin. C1-37 to C1-3
3
4Lt Blu/BLKLt GRN/BLKInj 4 controlInj 2 control
Move pin C1-76 to pin C1-4. Move pre-existing to pin C1-44
4
8GRYunused5 volt refunused
discover purpose of this wire
5
9Dk Bluunusedknock signalunusedRemove
6
11unusedLt BLU
Knock sensor 2
Add pin and wire to C1-11. Connect to rear KS.
7
25unusedTAN
Bank 2, Sensor 2 H02S Low Sig
Add pin and wire to C1-28 near plug end.
8
37PNK/BLKYEL/BLKInj 3 controlInj 6 control
Move pin C1-77 to C1-37.
9
41BLKBLKEGR Return
"Low reference"
Verify this pin should go to EGR low reference.
10
43BLK/WHTRED/BLKInj 5 controlInj 7 control
Add pin and wire to Inj 7. Move pre-existing ping to C1-76
11
44unusedLt BLu/BLKInj 4 control
Verify pin was moved from C1-4 earlier in this process.
12
46GRYGRY5v ref
5v ref - TP Sensor
Verify this pin goes to the TP Sensor
13
47GRYGRY5v ref
5v ref - MAP sensor
Verify this pin goes to MAP sensor
14
48GRYGRY5v ref
5v ref - EGR Position
Verify this pin goes to EGR valve
15
49GRYunusedKS returnunusedRemove
16
51unusedDK BLU
Knock sensor 1
Add pin and wire to front KS
17
65unusedPPL
Bank2, Sensor 2 H02S high sig
Add pin and wire to C1-68 near plug end
18
76Lt GRN/BLKBLK/WHTInj 2 controlInj 5 control
Verify pin was moved from C1-43
19
77DRK BLU/WHTDRK BLU/WHTInj 6 controlInj 8 control
Add pin and wire to inj 8.
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Pin Number (C2 RED)
Existing 4.3L Color on pin
5.3L colorOld PurposeNew PurposeTask
24
11DK BlU
AC high Pre recirc
Verify this is connected to an e-fan relay
25
26WHTPPL
IC Timing control
IC 1 control
Remove existing and pin and wire to Cyl 1 coil control
26
27unusedREDIC 7 control
Add pin to Cyl 7 coil control
27
28unusedLT BLU/WHTIC 6 control
Add pin to Cyl 6 coil control
28
29unusedDK GRN/WHTIC 4 control
Add pin to Cyl 4 coil control
29
60unusedBRN
IC Low Ref Bank 1
Connect to bank 1 coil intermediate cable (low ref)
30
61unusedBRN/WHT
IC Low Ref Bank 2
Connect to bank 2 coil intermediate cable (low ref)
31
66unusedPPL/WHTIC 8 control
Add pin to Cyl 8 coil control
32
67Red/WHTIC 2 control
Add pin to Cyl 2 coil control
33
68DK GRN/WHTIC 5 control
Add pin to Cyl 5 coil control
34
69LT BLU/WHTIC 3 control
Add pin to Cyl 3 coil control
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37
Additional Wiring
38
1
Crimp and solder both ground wires for the coil power circuit to new shared ground
39
2
Solder +12v for coil power circuits to old +12v coil power wire
40
3
Remove any unneeded injector +12v wires. We only need 2.
41
4
Build +12v "injector bus" to what was the pink side of each injector connector.
42
5
Fuse +12v injectors 2 at a time, then bring the two together and fuse to inj +12v source
43
6
Tie BRN coil wires together on cylinders: 1,3,5,7. Tap into C1-60
44
7
Tie BRN/WHT coil wires together on cylinders: 2,4,6,8. Tap into C1-61
45
8
Cut wires to Ign coil control. Save pink (+12ign) and BLK (GRD). Attach connector to
46
ground head to block on BLK wire. Attach to back of cylinder head.
47
Use pink wire to power coils
48
Remove remaining IGN coil control wires from old harness
49
9
Cut old coil power connector off. The +12 will be bound with the +12 for the ign
50
controller and power the coils. Connectorize the ground and attach to passenger
51
size cylinder head.
52
10
May have to install new connectors for the CKP and CMP sensors.
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Additional PCM changes
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57
1
Segment swap the engine and engine diagnostics from the proper year LS with a fresh 'full read' of the original program.
58
2
Set 'low res crank' in the ST options to 0
59
3
Set tach high and low res output to either 6 or 8, depending on which works better.
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