Domestic automakers saw a bit of a mixed-bag when it comes to August sales results. Fiat Chrysler Automobiles and Ford Motor Company both posted declines versus August 2016, while cross-town rival General Motors managed to ink a sales increase for the month.

FCA is reporting the worst August results, with total deliveries down 11 percent versus last year. The decline is somewhat driven from FCA’s planned drawdown of fleet sales, which are off 23 percent for the month. That said, the company admits retail sales to actual customers is also down 7 percent in August.

Ford’s modest 2.1 percent decline in August does not appear to be attributed by any single factor. In general, the Blue Oval’s sales month looks fairly typical, with a healthy rise in the company’s truck sales thanks to market shifts toward trucks and SUVs. Both the Ford and Lincoln brands saw declines, as did both retail and fleet sales for the entire company.

GM reversed the trend of the other two domestic automakers by posting a 7.1 percent sales increase for August. The company says retail sales are up 7 percent for the month, while commercial fleet sales are up 24 percent. The high increase in fleet sales is likely buoying GM’s results for August.

Like Ford, GM noted very strong sales results of the company’s trucks and SUVs as factors leading to its increase for the month. The all-new Chevrolet Equinox and Traverse both saw substantial sales increases, aiding the company’s retail sales increase.

All three automakers agree that the disaster created by Hurricane Harvey have impacted the overall industry’s sales results. The fourth largest metro area in the U.S. was effectively taken off the auto market during the last week of August.

None of the three automakers have stated an estimated impact on Harvey has had on their sales numbers. All three are aiding the region in the recovery, with some offering buyers disaster incentives.