Shares of Ford (F) - Get Report appear to have lost their post-GM-earnings momentum. Ford surged on the coat tails of General Motors' (GM) - Get Report powerful upside gap on July 21. This powerful move drove Ford into a very heavy resistance zone between $14 and $14.20.

As Ford's own earnings near, the stock is fading a bit and appear headed for a retest of very solid support.

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Ford has had a great run since the Brexit low. At last week's peak, the stock was up over 16% from its June 27 low. This impressive rebound took out layers of overhead supply along the way. As last week began, Ford was beginning to put some distance on its 200-day moving average as well as the June peak. As the stock begins to back away from supply near the January/April highs, this zone marks a solid support area.

In the near term, Ford appears headed for a retest of the $13.50-to-$13.15 area. This key support zone includes the stock's June high near the upper band. At the lower band is the weekly high as well as the 50-day moving average. In the middle of this zone is the 200-day moving average. If Ford can regain its footing near this area ahead of earnings, which are due Thursday morning, better-than-expected results could spark a fresh rally leg.

Disclosure: This article is commentary by an independent contributor. At the time of publication, the author was long Ford.