The GTO was built by Pontiac.
Manufacturer Identification answers
Who makes the Grand Prix?
The Grand Prix was built by Pontiac.
Who makes the Torrent?
The Torrent was built by Pontiac.
Who makes the G8?
The G8 was built by Pontiac.
Who makes the G5?
The G5 was built by Pontiac.
Who makes the G3?
The G3 was built by Pontiac.
Who makes the Vibe?
The Vibe was built by Pontiac.
Who makes the Solstice?
The Solstice was built by Pontiac.
Who makes the G6?
The G6 was built by Pontiac.
Who makes the H1?
The H1 was built by HUMMER.