how do I calibrate the speedometer on my 92 Silverado shows 85 at 65mph

Asked by TATTOOEDTOAD Nov 20, 2015 at 09:14 PM about the 1992 Chevrolet C/K 1500 Silverado LB RWD

Question type: Maintenance & Repair

At 45mph Speedo shows 53 at 65 it shows 85 on gages currently I have
235/70r15 should I use different size tire of is speedometer in need of
calibration?

3 Answers

F_O_R answered 9 years ago

Did you install really short tires? Your truck probably drives the speedo from the transmission. If so you can change the drive gear to match your tires. Electronic speedos can be changed with a programmer.

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Anoxynym answered 6 years ago

I have the same problem. Is there anyone with a solution?

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Triscuitdude answered 5 years ago

I have a 1998 Chevy k1500 standard cab. With same issues. I have this tire/ wheel sizes with 275/70-R18. My speedometer is of by 4 or 5 mph.

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