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Horn problems

horn hasn’t work since I got the truck back in 2020. It’s a 1996 gmc k1500. The horn works when rigged up to a dewalt 20v battery, and is directly plugged in, but when I trace the wires further down, I see another plug close to the fuse box under the hood that isn’t plugged up and I can’t find...
- densobro
- Thread
- Sep 20, 2023
- horn wire plug
- Replies: 16
- Forum: Wiring Diagrams
Rear gear ratio reprogram

So my boss today let me borrow his otc encore can tool. He says it can be used to reprogram rear gear ratio in vehicles and I can’t figure out how to find that setting for my 1996 gmc k1500. Does anybody else have experience with this tool?
- densobro
- Thread
- Nov 22, 2022
- gear ratio obd2 scan tool
- Replies: 2
- Forum: Axles + Brakes
Cluster speedo not accurate

Speedometer has always been of since I got the truck. (1996 GMC Sierra sle 5.7 4x4) Had my wife drive next to me while on the phone with her to confirm my speeds. When the Spedo reads 90, I’m going 70. When it reads 80, I’m going 60. And when it reads 70 in going 50. I searched around for...
- densobro
- Thread
- May 4, 2022
- Replies: 27
- Forum: Audio + Electronics
Struggling to crank

Been using gmt400.com for years as a resource but just decided to make an account because I’m stumped on something. And I’m not sure if I’m doing this right. Any ways 1996 gmc k1500 5.7. New GM 5.7 vortec installed last week. New 4l60e transmission installed last week by my local shop. New...
- densobro
- Thread
- Apr 30, 2022
- Replies: 19
- Forum: Introduction