Wiring harness pinout needed?

Tiny
LANDON05
  • MEMBER
  • 1997 CHEVROLET 1500
  • 4.3L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 223,000 MILES
I need a firewall plug diagram for a 1997 k1500.
Friday, February 23rd, 2024 AT 1:46 PM

6 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,300 POSTS
Hi,

I believe I have the correct one for you. It should be a light gray, 36 pin connector. If that is incorrect, let me know.

If you look below, pic 1 is the connector. The remaining pictures indicate the function of each of the connector pins, wire color, wire gauge, and so on.

Take a look through this and let me know if this is what you need.

Take care,

Joe

See pics below.
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Friday, February 23rd, 2024 AT 10:08 PM
Tiny
LANDON05
  • MEMBER
  • 4 POSTS
Yes, I think that’s right but by any chance is that a difference in that plug and a 1998 k1500 with a 5.7? If so, I need a pinout for that too.
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Sunday, February 25th, 2024 AT 7:58 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,300 POSTS
Hi,

They appear very similar, but there are a few differences. What I recommend is to print out the information I provided and do a side by side comparison.

If you look below, I attached the info for a 98 with the 5.7L.

Let me know if this helps.

Take care,

joe

See pics below.
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Sunday, February 25th, 2024 AT 6:40 PM
Tiny
LANDON05
  • MEMBER
  • 4 POSTS
Is there any difference between a regular k1500 and a work truck model? Just asking.
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Monday, February 26th, 2024 AT 11:13 AM
Tiny
LANDON05
  • MEMBER
  • 4 POSTS
The 1997 is a work truck and I didn’t know if that would make a difference in the plugs.
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Monday, February 26th, 2024 AT 11:16 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,300 POSTS
Hi,

I double-checked and that is the only one for a 98. I suspect there may be connector wires that may or may not be used based on options.

Joe
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Monday, February 26th, 2024 AT 7:23 PM

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