1998 Chevy Silverado V8 Four Wheel Drive Automatic 115000 miles
My friend has a '98 chev. Silverado w/ 4 wheel drive. The speedometer jumps to 35 or 40 mph when it gets over 3 to 5 mph, & to 70 mph when driving at aprox. 35 to 40 mph. It's as though it wants to register double the actual mph. Is this an indication of a faulty or bad speed sensor located on the transmission? &Amp; What is the procedure for replacement? I noticed what looks like a blue piece of plastic around the sensor at the entry of the hole where it is screwed into. Is this a lock system that requires a special tool for removal and replacement? Or is it just a secondary piece to ensure that the sensor does not back itself out from vibration? Any input or information on this would be greatly appreciated. Thanks R.N.
Saturday, August 23rd, 2008 AT 3:38 PM