The largest of two recalls announced Wednesday covers almost 382,000 Ram 2500 and 3500 pickups and Ram 4500 and 5500 chassis cabs from 2010 through 2014.
In trucks with 6.7-Liter Cummins diesel engines, corrosion on a fuel heater terminal could cause overheating, fuel leaks and fires. Chrysler is not aware of any fires or injuries. Dealers will install upgraded terminals and fuel heater housings could be replaced.
The second recall covers more than 184,000 Jeep Grand Cherokee and Dodge Durango SUVs from 2014.
A debris cover over a circuit board can disrupt communications and disable the stability control. Software will be upgraded.