Farmallmd
New member
- Joined
- Oct 20, 2025
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- Buick Ownership
- Lesabre
Hi everyone, I am the new owner to a '98 LeSabre. This is my first GM vehicle (been around Ford trucks and SUV's for the past 20 years) and just looking to answer some questions I have on these cars.
-I assume that these got the same wiring harness no matter how they were optioned? Considered adding the passenger side climate control if possible.
-If I swap a gauge cluster in with a tach in, should plug right in with no other work?
-I have noticed the tach reads 10 mph slower than what I'm actually going, is there any adjustments to those or will I just have to replace the speed sensor?
I have some other things I will have to work on as well, but happy with my purchase. I appreciate any help to my questions, and any other advice that you have on LeSabre's.
-I assume that these got the same wiring harness no matter how they were optioned? Considered adding the passenger side climate control if possible.
-If I swap a gauge cluster in with a tach in, should plug right in with no other work?
-I have noticed the tach reads 10 mph slower than what I'm actually going, is there any adjustments to those or will I just have to replace the speed sensor?
I have some other things I will have to work on as well, but happy with my purchase. I appreciate any help to my questions, and any other advice that you have on LeSabre's.

