NEW YORK (CNNMoney.com) - General Motors is recalling over 900,000 pickups worldwide due to instances of tailgate cables corroding and snapping, a GM spokesman said Friday.

The recall hits Chevrolet's Silvarado and GMC's Sierra pickup lines for model years 1999 and 2000. Most of those affected, 805,368, are in the U.S.

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The spokesman said the galvanized steel cables were protected with a plastic coating. But water has been found to get in the coating and cause the cable to corrode and snap when the tailgate is down.

GM (Research) said there have been 84 injuries, most of them minor scrapes and bumps.

Owners will receive letters in April and the tailgate cable will be replaced with a stainless steel cable.

Friday's announcement comes after a previous GM recall of 4.1 million model year 2000 to 2004 pick-ups and SUVs for the same reason.

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