Demand has been brisk for the all-new 2014 Chevy Silverado. But is GM having trouble keeping up? Photo credit: General Motors.

General Motors (NYSE:GM) made a tremendous effort to ensure that its launch of the all-new Chevy Silverado and GMC Sierra pickups -- GM's most important products -- would go smoothly. All appeared to be going exactly as GM planned -- but now, there are reports that the 5.3-liter V8 engines used in the new pickups may be in short supply.

Sales of GM's pickups were down last month, and Ford (NYSE:F) was able to gain market-share ground. That's a big problem for GM, but it may not be a GM problem: Bloomberg has reported that the problem lies with a supplier that hasn't been able to keep up with demand. 

But as Fool contributor John Rosevear points out, it doesn't matter where the problem lies -- in the face of stiff competition from Ford and Chrysler, GM needs to get it fixed before its new pickup's strong sales momentum stalls.

Fool contributor John Rosevear owns shares of Ford and General Motors. You can connect with him on Twitter at @jrosevearThe Motley Fool recommends Ford and General Motors and owns shares of Ford. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.