Dorman 599-011 Electronic Climate Control Module on 2040-parts.com

More Power! Get the details on the potent Porsche 911 GT3 RS 4.0

Porsche has ramped up the already heady performance of the 911 GT3 RS through the adoption of a new, naturally aspirated 4.0-liter version of the company's sturdy, horizontally opposed flat six-cylinder engine. The unit kicks out 50 hp more than the 3.8-liter six-cylinder used in the existing 911 GT3 RS. This mill claims 500 hp at 8,250 rpm, a figure which makes the speedster the most powerful naturally aspirated road-going version of the 911 ever.

GM makes select OnStar services free

General Motors said on Wednesday that it will make unlocking doors, activating horn and lights, and remote start on equipped vehicles standard with its OnStar RemoteLink Mobile App for 2014 vehicles, even if owners decline to pay for other OnStar services. More than 36 Buicks, Cadillacs, GMC and Chevy models are compatible with the app. GM says it gets more than 60,000 requests from forgetful drivers each month, asking for door-unlock assistance, “so it makes sense for us to offer RemoteLink key-fob services to enable customers to lock, unlock or start their vehicle from anywhere they have a wireless or cellular connection,” said Mary Chan, president GM global connected-consumer business unit.

Lutz's Cadillac puts on a better show than Lutz

"Hi, I'm Bob Lutz, and this is the Cadillac CTS-V Drive Challenge." General Motors Co.'s marketing chief dons his monogrammed helmet and puts Cadillac's 550-horsepower sedan through some warm-up laps at Monticello Motor Club, a members-only track. In what might have passed as a dismissible moment of Lutz braggadocio, "Maximum" Bob has challenged anyone with a four-door sedan to beat his 2010 CTS-V. Though not a showman by trade, Lutz is bankable for amusing, bald-faced assessments of his employer, his critics and the auto industry at large.