1986 Buick Grand National Grand National on 2040-cars

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GM warning 800,000 owners that their cars may need oil changes more frequently than they say

The days of changing your engine oil every 3,000 miles are long gone thanks to most cars having automatic oil monitoring systems, but about 800,000 General Motors vehicles apparently have incorrect monitoring software that is leading to premature engine component wear. According to Autoweek, certain 2010-2012 Buick LaCrosse, Regal, Chevrolet Equinox and GMC Terrain models equipped with 2.4-liter four-cylinder engines could be going too long in between oil changes resulting in a higher-than-normal number of warranty claims for the engine's balance chain. The balance chain links the balance shaft to the crankshaft, and a worn one can produce higher noise levels.
As a fix, GM dealers will be reprogramming the software for the monitors in an effort to reduce the interval between oil changes, which varies based on driving habits and conditions. Through February 2015, the software update will be done at no cost to vehicle owners, but since this is not a recall, after that point, it will be up to the discretion of dealers as to whether or not they will charge for the service. What isn't immediately clear is whether GM plans on giving assistance to out-of-warranty customers who are experiencing engine issues from the worn chain.

1969 Chevrolet Chevelle vs 1987 Buick GNX in Generation Gap showdown

Generation Gap generally tries to adhere to a theme for each episode, and for the final video from the Lingenfelter collection, the series might have its best idea yet - limited-production muscle cars from General Motors.
On one side you get a 1969 Chevrolet Chevelle COPO, and it's an absolute sleeper. Other than the SS wheels, this classic coupe looks practically bone stock, at least until the engine fires up. Under the hood is a 427-cubic-inch (7.0-liter) V8 making a claimed 425 horsepower and 460 pound-feet of torque. This was the sole year for the COPO package on the Chevelle, and Chevy only made about 323 of them.
The Chevelle's challenger is almost as rare and arguably just as cool. The 1987 Buick Grand National GNX looks just as mean today as when new. It eschews a traditional muscular V8 in favor of a 3.8-liter turbo V6 making a claimed 276 hp and 360 lb-ft, although that number is supposedly a bit underrated. Also, just 547 examples of the GNX version were ever built making it quite a collector's item too.

Buick Adam a reality after all... but only in China

General Motors may have parred down its brand portfolio, but it still has more under its umbrella than most. That's why, while a company like Ford might market the same vehicle under its own name in markets around the world, GM uses different brands in different markets. But no two are aligned quite as closely as Opel in Europe and Buick in the United States and China.
What we know here as the Buick Regal is sold overseas as the Opel Insignia. Our Encore is their Mokka. Verano? Astra sedan. But one thing we don't get here is the Opel Adam. The diminutive city car is GM's take on the Mini Cooper, Fiat 500, Citroën DS3 et al. Launched at the 2012 Paris Motor Show, the Opel Adam is named after the company's founder (like an ironic thumbing of the nose to the Ferrari Enzo). But while it's sold, like most Opels, in the UK as a Vauxhall, the prospect of it porting over to Buick seems slim to none. Right?
Sorta. While the Adam isn't likely to come Stateside, the latest reports (as yet unconfirmed by GM) suggest that The General is planning to sell the Adam in China where the Buick brand is also a strong seller. Local production could ensue, with prices targeting the Fiat 500 and engines - according to CarNewsChina.com - to include inline-fours displacing 1.2 and 1.4 liters with 69 and 100 horsepower, respectively.