Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2008 Chevrolet Chevy Express G2500, Van Cargo Extended, 6.0 KFACTORY OEM SERVICE PROCEDURE

Fuse Block - Underhood X4

Fig 1: Fuse Block - Underhood - X4 Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire Color	Circuit No.	Function
A-B	-	-	Not Used
C	0.35 TN/WH	312	Right Headlamp Low Beam Control (-V22)
C	0.5 TN/WH	312	Right Headlamp Low Beam Control (V22)
D	0.5 BN	2309	Front Park Lamps Control
E	-	-	Not Used
F	0.35 YE	712	Left Headlamp Low Beam Control (-V22-T79)
G-J	-	-	Not Used
K	0.8 L-GN/BK	311	Right Headlamp High Beam Control
L	0.5 D-GN/WH	711	Left Headlamp High Beam Control
M	0.5 YE	712	Left Headlamp Low Beam Control (V22)
	0.5 YE	712	Left Headlamp Low Beam Control (V22)
	0.35 YE	712	Left Headlamp Low Beam Control (-V22)
	0.35 YE	712	Left Headlamp Low Beam Control (-V22)
N	0.5 BN	2309	Front Park Lamps Control
P	0.8 L-BU/WH	1314	Left Front Turn Signal Lamp Control
R	0.5 YE	712	Left Headlamp Low Beam Control (V22-T79)
S	0.8 D-BU/WH	1315	Right Front Turn Signal Lamp Control

Connector Part Information

OEM: 15326952
Service: 15326952
Description: 16-Way F GT 280 Series (BK)

Terminal Part Information

Pins: C, D, F, L, M, N, R, K, P, S
Terminal/Tray: 15304711/8
Core/Insulation Crimp: Pins C, D, F, L, M, N, R - E/A
Core/Insulation Crimp: Pins K, P, S - 2/A
Release Tool/Test Probe: 15315247/J-35616-4A (PU)

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.

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