The reason for this is the conspicuous lack of an overdrive transmission. Back in the late ’60s gas was cheap, and highway cruising speeds were lower. Also, GM was more concerned with keeping ...

See All 12 Photos With the increase in both the strength and popularity of overdrive automatic and manual transmissions in recent years, the path to a Gear Vendors overdrive unit may not be as ...

The overdrive switch is usually located on the ... However, if this indicator light is flashing, your car's transmission likely has an issue that a trusted mechanic must look over.