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Dan, Technician
Category: GM
Satisfied Customers: 24574
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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Where is tach signal wire on 2002 GMC 6500 GAs 8.1

Customer Question

Where is tach signal wire on 2002 GMC 6500 GAs 8.1
Submitted: 2 years ago.
Category: GM
Expert:  Dan replied 2 years ago.

Hello, my name is***** does not have a tach wire, you will need to splice into one of the coil signal wires to tach signal. Let me know if you have more questions or if there is anything else I can do to help. Thanks.

Customer: replied 2 years ago.
Please explain and or give me a diagram
Expert:  Dan replied 2 years ago.

Control wire for cylinder 1 coil is dark pink, red/white for 2, light blue for 3, just use whatever coil is easiest to access. Each spark plug has a coil directly on top of it. Let me know how it goes or if you have more questions, thanks.