Questions & Answers for: Chevrolet erratic speedo

speedo which in turn afftects the tranny. I am at a lost with this thing. The ECM or TCM may be the culprit, its also possible that a ground wire is no longer grounded or partially grounded giving you

...speedo starts to go erratic then stops working then the brake warning light comes on then the abs light comes on then the transmission shifts into low Check your battery terminal connections. Because ...

speedo not working very erratic shifting what are the symptoms of a bad vss change the speed sensor it will be on the transmission , lower passenger side

...erratic on 99 chevy cavalier Check the VVS (vehical velocity sensor) "speed sensor", The vss controls shifting and cruise control as well as speedometer. If the Cavalier shift's fine and cruise ...

...erratic. Now it doesn't work at all. I haven't gotten my ABS fixed yet. Does the ABS have anything to do with the Speedometer? unfortunately it doesn't, it runs off of a different speed ...

speedometor erratic reads 50 when stopped and 130 when traveling 80 not sure if this a electronic type speedo then i suspect the speedo head is suspect

erratic. Most of the time everything works fine. Then my speedo goes to 120 mph and the tach runs up to 6000. Generally, I can togggle the ignition switch and get everything back to zero. It's

...speedo sensor is in the rear differential. Could be that or wiring. The wires tend to break close to the plug. My guess would be the wires as it was erratic at first. Sensors like those usually work ...