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Discussion Starter #1
Hey Guys,

My name is Mani
I'm from germany

I'm searching for a complete wiring schematic for a 2008 TBSS
I want to do a LS2 swap at my 1965 chevy c10

Can someone help me with the schematics?

Thanks

99952
 

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2008 TrailblazerSS
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901 Posts
Nice truck. Welcome. I’m sure someone will chime in with the info your looking for.


2008 TBSS Super Charged
 

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38 Posts
Give me a few hours when i get home, and i will jump on gm si and give you what ever schematics you want. Unless someone beats me to it :)
 

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99980



Connector Part Information
  • OEM: 13587097 (LL8)/13574282 (LH6/LS2)
  • Service: 88988373
  • Description: 56-Way F 0.64 Series Sealed (BU)
Terminal Part Information
  • Pins: 1, 2, 4, 9, 12, 13, 16, 18, 20–22, 25, 30–37, 39–40, 44, 46–49, 53, 55, 56
  • Terminal/Tray: 33467-0003/23
  • Core/Insulation Crimp: H/H
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 7, 19, 51
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

Engine Control Module (ECM) X1
Pin​
Wire​
Circuit​
Function​
1​
0.35 PU​
806​
Crank Voltage​
2​
0.35 PU​
420​
TCC Brake Switch/Cruise Control Release Signal​
3​
—​
—​
Not Available​
4​
0.35 GY/BK​
1694​
4WD Low Signal (NP8)​
5–6​
—​
—​
Not Available​
7​
0.35 L-BU​
1320​
CHMSL Control (K34)​
8​
—​
—​
Not Available​
9​
0.35 BK​
2759​
Low Reference​
10–11​
—​
—​
Not Available​
12​
0.35 BN/WH​
419​
MIL Control​
13​
0.35 D-GN/WH​
465​
Fuel Pump Relay Control​
14​
—​
—​
Not Available​
15​
—​
—​
Not Used (LL8)​
—​
—​
Not Available (LH6/LS2)​
16​
0.35 D-GN​
1049​
Class 2 Serial Data​
17​
—​
—​
Not Available​
18​
0.35 PK​
1020​
Ignition Voltage​
19​
0.35 PK​
439​
Ignition Voltage​
20​
0.35 OG​
240​
Battery Positive Voltage​
21​
0.35 GY/BK​
87​
Cruise Control Resume/Accel Switch Signal (K34)​
22​
0.35 D-BU​
84​
Cruise Control Set/Coast Switch Signal (K34)​
23​
—​
—​
Not Available​
24​
—​
—​
Not Used (LL8)​
—​
—​
Not Available (LH6/LS2)​
25​
0.35 WH​
121​
Engine Speed Signal​
26–29​
—​
—​
Not Available​
30​
0.35 GY​
397​
Cruise Control On Switch Signal (K34)​
31​
—​
—​
Not Available (LL8)​
0.35 BK​
452​
Low Reference (LH6/LS2)​
32​
—​
—​
Not Available (LL8)​
0.35 GY​
416​
5-Volt Reference (LH6/LS2)​
33​
0.35 WH/BK​
1164​
5-Volt Reference​
34​
0.35 GY​
2709​
5-Volt Reference​
35​
0.35 TN​
1274​
5-Volt Reference​
36​
0.35 BN​
1271​
Low Reference​
37​
0.35 PU​
1272​
Low Reference​
38​
—​
—​
Not Available​
39​
0.35 D-GN/WH​
817​
Vehicle Speed Signal​
40​
0.35 YE​
5991​
Powertrain Relay Coil Control​
41–43​
—​
—​
Not Available​
44​
0.35 PU​
1589​
Fuel Level Sensor Signal​
45​
—​
—​
Not Available​
46​
—​
—​
Not Available (LL8)​
0.35 D-BU​
1809​
Brake Booster Vacuum Sensor (LH6/LS2)​
47​
0.35 D-BU​
1161​
APP Sensor 1 Signal​
48​
0.35 D-GN​
890​
Fuel Tank Pressure Sensor​
49​
0.35 L-BU​
1162​
App Sensor 2 Signal​
50​
—​
—​
Not Available​
51​
0.5 PK/BK​
429​
Air Injection Reaction Solenoid Relay Coil Control (LL8)​
52​
—​
—​
Not Available​
53​
0.35 D-GN/WH​
459​
A/C Compressor Clutch Relay Control​
54​
—​
—​
Not Available​
55​
0.35 WH​
1310​
EVAP Canister Vent Solenoid Control​
56​
0.35 YE/BK​
625​
Starter Enable Relay Control​
 

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99981



Connector Part Information
  • OEM: 13606070 (LL8)/13574286 (LH6/LS2)
  • Service: 88988931
  • Description: 73-Way F 0.64 2.8 Series Sealed (BK)
Terminal Part Information
  • Pins: 2–5, 11–13, 16, 18, 19, 32, 35, 42, 48, 49, 52, 55, 67–69, 70–72
  • Pins: 27, 43 (LL8)
  • Pins: 1, 17, 33, 34, 53, 54, 62 (LH6/LS2)
  • Terminal/Tray: 33467-005/23
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: J-38125-213/J-35616–64B (L-BU)
  • Pins: 6–9, 14, 23, 24, 29, 39, 40, 44, 46, 59, 60, 63, 64, 66
  • Pins: 1, 17, 33, 34, 53, 54, 62 (LL8)
  • Pins: 27, 43 (LH6/LS2)
  • Terminal/Tray: 33467-0003/23
  • Core/Insulation Crimp: H/H
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pin: 73 (LL8)
  • Terminal/Tray: 4-964286-1/16
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: J-38125-36/J-35616-35 (VT)
  • Pin: 73 (LH6/LS2)
  • Terminal/Tray: 7116-4152-02/9
  • Core/Insulation Crimp: A/5
  • Release Tool/Test Probe: 12094430/J-35616-35 (VT)

Engine Control Module (ECM) X2
Pin​
Wire​
Circuit​
Function​
1​
0.35 PU​
2121​
IC 1 Control​
2​
0.5 TN​
1664​
HO2S Low Signal – Bank 1 Sensor 1​
3​
0.5 PU/WH​
1665​
HO2S High Signal – Bank 1 Sensor 1​
4​
0.5 PU/WH​
1668​
HO2S High Signal – Bank 1 Sensor 2​
5​
0.5 TN/WH​
1669​
HO2S Low Signal – Bank 1 Sensor 2​
6​
0.35 L-BU​
1876​
KS 2 Signal​
7​
0.35 GY​
2303​
KS 2 Signal​
8​
0.35 D-BU​
496​
KS 1 Signal​
9​
0.35 GY​
1716​
KS 1 Signal​
10​
—​
—​
Not Available​
11​
0.5 YE​
581​
TAC Motor Control 1​
12​
0.5 BN​
582​
TAC Motor Control 2​
13​
0.5 PK​
839​
Ignition Voltage​
14​
0.35 BN​
2198​
Camshaft Position Actuator Solenoid High Control (LL8)​
—​
—​
Not Available (LH6/LS2)​
15​
—​
—​
Not Available​
16​
—​
—​
Not Available (LL8)​
0.5 PK/BK​
1746​
Fuel Injector 3 Control (LH6/LS2)​
17​
0.35 D-GN​
2125​
IC 5 Control (LL8)​
0.5 PU/WH​
2128​
IC 8 Control (LH6/LS2)​
18​
—​
—​
Not Available (LL8)​
0.5 D-GN/WH​
2124​
IC 4 Control (LH6/LS2)​
19​
—​
—​
Not Available (LL8)​
0.5 BN/WH​
2130​
Low Reference (LH6/LS2)​
20–22​
—​
—​
Not Available​
23​
0.35 PK/BK​
632​
Low Reference​
24​
0.35 PU​
114​
Low Oil Pressure Switch Signal (LL8)​
0.35 BK​
2755​
Low Reference (LH6/LS2)​
25–26​
—​
—​
Not Available​
27​
0.5 BK​
407​
Low Reference (LL8)​
0.35 YE/BK​
1868​
Low Reference (LH6/LS2)​
28​
—​
—​
Not Available​
29​
0.35 BK/WH​
1704​
Low Reference​
30–31​
—​
—​
Not Available​
32​
0.5 YE/BK​
846​
Fuel Injector 6 Control​
0.5 L-GN/BK​
1745​
Fuel Injector 2 Control (LH6/LS2)​
33​
0.35 L-BU​
2123​
IC 3 Control (LL8)​
0.5 RD​
2127​
IC 7 Control (LH6/LS2)​
34​
0.35 D-GN/WH​
2124​
IC 4 Control (LL8)​
0.5 D-GN​
2125​
IC 5 Control (LH6/LS2)​
35​
—​
—​
Not Available (LL8)​
0.5 BN​
2129​
Low Reference (LH6/LS2)​
36–38​
—​
—​
Not Available​
39​
0.35 RD​
631​
12-Volt Reference​
40​
—​
—​
Not Available (LL8)​
0.35 GY​
2705​
5-Volt Reference (LH6/LS2)​
41​
—​
—​
Not Available​
42​
0.5 BK​
2760​
Low Reference​
43​
0.35 YE​
6259​
Starter Enable Relay Control (LL8)​
0.35 L-GN​
1867​
12-Volt Reference (LH6/LS2)​
44​
0.35 GY​
2701​
5-Volt Reference (LL8)​
0.35 L-BU/BK​
1688​
5-Volt Reference (LH6/LS2)​
45​
—​
—​
Not Available​
46​
0.35 BK​
2199​
Low Reference (LL8)​
—​
—​
Not Available (LH6/LS2)​
47​
—​
—​
Not Available​
48​
0.5 BK/WH​
845​
Fuel Injector 5 Control (LL8)​
0.5 D-BU/WH​
878​
Fuel Injector 8 Control (LH6/LS2)​
49​
0.5 L-BU/BK​
844​
Fuel Injector 4 Control (LL8)​
0.5 BK/WH​
845​
Fuel Injector 5 Control (LH6/LS2)​
50–51​
—​
—​
Not Available​
52​
0.5 L-GN/BK​
1745​
Fuel Injector 2 Control (LL8)​
0.5 YE/BK​
846​
Fuel Injector 6 Control (LH6/LS2)​
53​
0.35 L-BU/WH​
2126​
IC 6 Control (LL8)​
0.5 RD/WH​
2122​
IC 2 Control (LH6/LS2)​
54​
0.35 RD/WH​
2122​
IC 2 Control (LL8)​
0.5 L-BU/WH​
2126​
IC 6 Control (LH6/LS2)​
55​
—​
—​
Not Available (LL8)​
0.5 L-BU​
2123​
IC 3 Control (LH6/LS2)​
56–58​
—​
—​
Not Available​
59​
0.35 BK​
630​
CMP Sensor Signal (LL8)​
0.35 BN/WH​
633​
CMP Sensor Signal (LH6/LS2)​
60​
—​
—​
Not Available (LL8)​
0.35 TN/WH​
332​
Oil Pressure Sensor Signal (LH6/LS2)​
61​
—​
—​
Not Available​
62​
0.5 TN​
472​
IAT Sensor Signal​
63​
0.5 BN/WH​
633​
CKP Sensor Signal (LL8)​
0.35 D-BU/WH​
1869​
CKP Sensor Signal (LH6/LS2)​
64​
0.35 D-GN​
485​
TP Sensor 1 Signal​
65​
—​
—​
Not Available​
66​
0.35 PU​
486​
TP Sensor 2 Signal​
67​
0.5 YE​
492​
MAF Sensor Signal​
68​
0.5 D-GN​
676​
HO2S Heater Low Control – Bank 1 Sensor 1 (LL8)​
0.5 BK/WH​
3113​
HO2S Heater Low Control – Bank 1 Sensor 1​
69​
0.5 BK/WH​
1423​
HO2S Heater Low Control – Bank 1 Sensor 2 (LL8)​
0.5 BN​
2391​
HO2S Heater Low Control – Bank 1 Sensor 2 (LH6/LS2)​
70​
—​
—​
Not Available (LL8)​
0.5 L-BU/BK​
844​
Fuel Injector 4 Control (LH6/LS2)​
71​
0.5 PK/BK​
1746​
Fuel Injector 3 Control (LL8)​
0.5 RD/BK​
877​
Fuel Injector 7 Control (LH6/LS2)​
72​
0.5 BK​
1744​
Fuel Injector 1 Control​
73​
1 BK/WH​
451​
Ground (LL8)​
3 BK​
451​
Ground (LH6/LS2)​
 

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99982



Connector Part Information
  • OEM: 13608385 (LL8)/13574284 (LH6/LS2)
  • Service: 88988372
  • Description: 73-Way F 0.64 Series Sealed (GY)
Terminal Part Information
  • Pins: 3–6, 9–11, 15, 26, 42, 48, 50, 62, 68, 69
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 7, 12, 17, 21, 23, 29, 33, 35, 37, 39, 47, 53, 55, 57, 59, 65, 66
  • Terminal/Tray: 33467-0003/23
  • Core/Insulation Crimp: H/H
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

Engine Control Module (ECM) X3
Pin​
Wire​
Circuit​
Function​
1–2​
—​
—​
Not Available​
3​
—​
—​
Not Available (LL8)​
0.5 TN​
1667​
HO2S Low Signal – Bank 2 Sensor 1 (LH6/LS2)​
4​
—​
—​
Not Available (LL8)​
0.5 PU​
1666​
HO2S High Signal – Bank 2 Sensor 1 (LH6/LS2)​
5​
—​
—​
Not Available (LL8)​
0.5 PU​
1670​
HO2S High Signal – Bank 2 Sensor 2 (LH6/LS2)​
6​
—​
—​
Not Available (LL8)​
0.5 TN​
1671​
HO2S Low Signal – Bank 2 Sensor 2 (LH6/LS2)​
7​
0.35 PU​
5428​
Generator Regulator Control​
8​
—​
—​
Not Available​
9​
0.5 BN​
436​
AIR Pump Relay Control (LL8)​
—​
—​
Not Available (LH6/LS2)​
10​
—​
—​
Not Available (LL8)​
0.5 GY​
5493​
Cylinder Shutoff Solenoid Control (3) (LH6/LS2)​
11​
—​
—​
Not Available (LL8)​
0.5 D-BU​
5491​
Cylinder Shutoff Solenoid Control (1) (LH6/LS2)​
12​
0.35 TN/BK​
464​
Delivered Torque Signal​
13–14​
—​
—​
Not Available​
15​
—​
—​
Not Available (LL8)​
0.5 L-GN​
3212​
HO2S Heater Low Control – Bank 2 Sensor 1 (LH6/LS2)​
16​
—​
—​
Not Available​
17​
0.35 OG/BK​
463​
Requested Torque Signal​
18–20​
—​
—​
Not Available​
21​
0.35 BK​
2751​
Low Reference​
22​
—​
—​
Not Available​
23​
0.35 OG/BK​
469​
Low Reference​
24–25​
—​
—​
Not Available​
26​
0.5 D-BU/WH​
6785​
Air Injection Reaction Control Valve 1 Low Reference (LL8)​
—​
—​
Not Available (LH6/LS2)​
27​
—​
—​
Not Available​
28​
—​
—​
Not Used​
29​
0.35 GY​
23​
Generator Field Duty Cycle Signal​
30–32​
—​
—​
Not Available​
33​
0.35 TN​
2501​
High Speed GMLAN Serial Data Bus –​
34​
—​
—​
Not Available​
35​
0.35 BK​
2761​
Low Reference​
36​
—​
—​
Not Available​
37​
0.35 GY​
2700​
5-Volt Reference​
38​
—​
—​
Not Available​
39​
0.35 GY​
2704​
5-Volt Reference​
40–41​
—​
—​
Not Available​
42​
0.5 BN/WH​
6789​
Air Injection Reaction Control Valve 1-Volt Reference (LL8)​
—​
—​
Not Available (LH6/LS2)​
43​
—​
—​
Not Available​
44​
—​
—​
Not Used​
45–46​
—​
—​
Not Available​
47​
0.35 OG/BK​
1786​
PNP Switch Signal​
48​
0.5 D-GN/WH​
428​
EVAP Canister Purge Solenoid Control​
49​
—​
—​
Not Used​
50​
—​
—​
Not Available (LL8)​
0.5 RD/WH​
3223​
HO2S Heater Low Control – Bank 2 Sensor 2 (LH6/LS2)​
51–52​
—​
—​
Not Available​
53​
0.35 TN/WH​
2500​
High Speed GMLAN Serial Data Bus +​
54​
—​
—​
Not Available​
55​
0.35 YE​
410​
ECT Sensor Signal​
56​
—​
—​
Not Available​
57​
0.35 RD/BK​
380​
A/C Refrigerant Pressure Sensor​
58​
—​
—​
Not Available​
59​
0.35 L-GN​
432​
MAP Sensor Signal​
60–61​
—​
—​
Not Available​
62​
0.5 YE​
6787​
Secondary Air Injection Pressure Sensor Signal (LL8)​
—​
—​
Not Available (LH6/LS2)​
63​
—​
—​
Not Available​
64​
—​
—​
Not Used​
65​
0.35 TN/BK​
231​
Oil Pressure Switch Signal (LL8)​
—​
—​
Not Available (LH6/LS2)​
66​
0.35 RD​
381​
Signal High – Front​
67​
—​
—​
Not Available​
68​
—​
—​
Not Available (LL8)​
0.5 L-GN​
5492​
Cylinder Shutoff Solenoid Control (4) (LH6/LS2)​
69​
—​
—​
Not Available (LL8)​
0.5 OG​
5494​
Cylinder Shutoff Solenoid Control (2) (LH6/LS2)​
70–72​
—​
—​
Not Available​
73​
—​
—​
Not Used​
 

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Connector Part Information
  • OEM: 13511976
  • Service: 88987979
  • Description: 49-Way F GT 280 Series Sealed (BK)
Terminal Part Information
  • Pins: 1–3, 5–7, 11, 14, 16, 17, 20, 23–25, 29–33, 35, 37–42, 44–46
  • Terminal/Tray: 15359541/4
  • Core/Insulation Crimp: M/M
  • Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)
  • Pins: 49
  • Terminal/Tray: 15304720/19
  • Core/Insulation Crimp: 4/5
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)

Transmission Control Module (TCM)
Pin​
Wire​
Circuit​
Function​
1​
0.5 BN​
418​
TC  PWM Solenoid Valve Control​
2​
0.5 L-GN​
1222​
1–2 Shift Solenoid Valve Control​
3​
0.35 OG​
1983​
ISS Signal​
4​
—​
—​
Not Available​
5​
0.35 RD​
381​
Signal High – Front​
6​
0.35 L-BU/BK​
6106​
High Speed GMLAN Serial Data Bus − (CAN)​
7​
0.35 D-BU​
6105​
High Speed GMLAN Serial Data Bus + (CAN)​
8–10​
—​
—​
Not Available​
11​
0.35 YE​
243​
Accessory Voltage​
12–13​
—​
—​
Not Available​
14​
0.5 WH​
687​
3–2 Shift Solenoid Valve Control​
15​
—​
—​
Not Available​
16​
0.35 L-GN/BK​
822​
VSS Low Signal​
17​
0.5 L-BU/WH​
1229​
PC Solenoid Valve Low Control​
18–19​
—​
—​
Not Available​
20​
0.5 YE/BK​
1223​
2–3 Shift Solenoid Valve Control​
21–22​
—​
—​
Not Available​
23​
0.35 GY​
773​
Transmission Range Switch Signal C​
24​
0.5 PK​
1224​
Transmission Fluid Pressure Switch Signal A​
25​
0.5 TN/BK​
422​
TCC Solenoid Valve Control​
26–28​
—​
—​
Not Available​
29​
0.35 BK/WH​
771​
Transmission Range Switch Signal A​
30​
0.5 BK​
2762​
Low Reference​
31​
0.5 PK​
139​
Ignition 1 Voltage​
32​
0.35 OG​
540​
Battery Positive Voltage​
33​
0.5 RD​
1226​
Transmission Fluid Pressure Switch Signal C​
34​
—​
—​
Not Available​
35​
0.5 YE/BK​
1227​
TFT Sensor Signal​
36​
—​
—​
Not Available​
37​
0.35 TN​
2501​
High Speed GMLAN Serial Data Bus − (CAN)​
38​
0.35 TN/WH​
2500​
High Speed GMLAN Serial Data Bus + (CAN)​
39​
0.35 WH​
776​
Transmission Range Switch Signal P​
40​
0.5 RD/BK​
1228​
PC Solenoid Valve High Control​
41​
0.35 PU/WH​
821​
VSS High Signal​
42​
0.35 L–BU​
1320​
Stop Lamp Switch Signal​
43​
—​
—​
Not Available​
44​
0.5 D-BU​
1225​
Transmission Fluid Pressure Switch Signal B​
45​
0.35 L-BU​
1984​
Low Reference​
46​
0.35 YE​
772​
Transmission Range Switch Signal B​
47–48​
—​
—​
Not Available​
49​
2 BK/WH​
451​
Ground (LL8)​
2 BK​
451​
Ground (LH6/LS2)​
 
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