| Hmm thats a strange one. On the duramax the speedo is electric so there are no cables to the trans.
Im racking my brain and I cant think of anything that in the dash board that would come at exact intervals and not go away.
So it comes exactly every 33 seconds at 70? Next time your out try switching to the tripometer and see if it comes at ever so many tenths of mile.
__________________ Jason 2006 Silverado 2500HD LBZ CC SB Escalade Handles, Front windows tinted to match the rear, painted bumpers, billet grille 4 Kicker 10in Subs in 2 custom box's, Autometer Ultra lite II Pyro and Boost gauges MBRP Turbo Back Stainless Exhaust (Straight piped), w/ stainless tip! PPE Hot+2 285/75/16 Nitto Terra Grapplers on Gear Alloy wheels ****Lost Kitty Reward if found!! 1999 Ford F-550 PowerStroke ''Wrecker'' **Jerrdan bed, S&B Intake  |