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Ron
Ron, ASE Certified Technician
Category: Chevy
Satisfied Customers: 34767
Experience:  35 years experience with ASE Certs
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Some one has worked on the wiring harness at the nsbu switch

Customer Question

some one has worked on the wiring harness at the nsbu switch on my 2002 d max and I need to repair it so I am looking for a diagram. if you could help; please
JA: Have you checked the vehicle's manual?
Customer: yes
JA: What is the model of your '02 Chevy?
Customer: 2500 hd
JA: Are you fixing your 2500 yourself? What have you tried so far?
Customer: nothing and yes just trying to find a diagram
JA: Anything else you want the mechanic to know before I connect you?
Customer: I think that is it
Submitted: 3 months ago.
Category: Chevy
Expert:  Ron replied 3 months ago.

Hello. My name is ***** ***** I am happy to assist you today. Give me just a moment to review your post, and I'll be right back with the help you need.

Expert:  Ron replied 3 months ago.

What are you trying to do, rewire the connector at the Neutral Safety Backup Switch?

Customer: replied 3 months ago.
check all the wiring related to the trans its all out of the loom from someone working on it. the indicator on the dash does not indicate what gear it is in and trans is stuck in 3rd.
Expert:  Ron replied 3 months ago.

So what harness are you needing, the connector view for the NSBU?

Customer: replied 3 months ago.
msg is fine wit me tks
Expert:  Ron replied 3 months ago.

So what harness diagrams are you needing, the connector view for the NSBU?

Customer: replied 3 months ago.
all of the trans and probably the pcm for the trans
Expert:  Ron replied 3 months ago.

Okay have a look at the enclosed diagram which includes the PCM to the transmission circuit and see if this is what your needing.

https://dl.dropboxusercontent.com/u/104923897/Trans%20wiring%20HD%20Jan%203.pdf

Customer: replied 3 months ago.
are you sure this is for a 02 the colors are different ?
Expert:  Ron replied 3 months ago.

Yes the harness id for the 2002 HD

Expert:  Ron replied 3 months ago.

This is a Chevy 2500 HD right?

Customer: replied 3 months ago.
it is
Expert:  Ron replied 3 months ago.

Okay these should be the correct diagrams.