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I finished a 6 in superlift on my OBS GMC and with 33's my speedometer is off like 5-10 miles an hour, is there any way to fix it with out buying that speedometer calibrator from superlift?
If your truck is 1995 and below, there is a tech article on www.fullsizechevy.com the tells you just how to recalibrate the speedo. If it is 1996 and later, go hypertech. :read:sparkyballz said:I finished a 6 in superlift on my OBS GMC and with 33's my speedometer is off like 5-10 miles an hour, is there any way to fix it with out buying that speedometer calibrator from superlift?