How to Clear DTC on a 1999 Cadillac?

Answer "Diagnostic trouble code (DTC) takes the form of an alpha-numeric sequence. A Cadillac's onboard diagnostic system issues a DTC whenever a problem is sensed within the car's engine or electrical s... Read More »

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How to Troubleshoot a 1999 Cadillac STS?

The Cadillac STS is a mid-sized touring sedan. The "STS" stands for "Seville Touring Sedan," as the car was the successor to the Cadillac Seville. The STS was introduced in 2005, revamped in 2006 a... Read More »

How to Replace the Alternator on a 1999 Cadillac STS?

The STS is Cadillac's performance model for its popular Seville line of sedans. The Seville's alternator uses the vehicle's energy to constantly charge the battery while the car is running. When th... Read More »

How to Replace a 1999 Cadillac STS Battery?

The 1999 Cadillac Seville STS's battery is located under the back center seat cushion--an unusual location, considering that most car batteries are located in the engine compartment. Changing the b... Read More »

What Kind of Transmission Does a 1999 Cadillac STS Have?

The 1999 Cadillac STS has GM's 4T80E transmission. It's a 4-speed, electronically controlled overdrive transmission based on GM's front-drive TH125 transmission.Source:1999 Cadillac STS transmission