A clunking noise, when you put your car into gear, is most likely caused by a bad u-joint. A problem in the transmission can also cause the noise.
A car that is in good running condition should not make a clunking noise. If a person pushes the gas and brake pedal at the same time causing a car to make a clunking noise, that is an indication of stain on the motor.
Worn motor and/or tranny mount.
A clunking noise when shifting gears on a K1500 automatic transmission, might mean a problem with the drive axle or drive shaft. Check all U-Joints to make sure they are working properly.
Check the transmission fluid level, be sure it is at the full line. A worn out universal joint could be the source of the clunking noise when the transmission is shifting.
sounds like the right front motor mount .i replaced mine and the clunking sound went away
You can tell if the transmission, in your 1998 Chevy Malibu, is going bad. If there is a whining or clunking noise. The transmission might cause your engine to install when you are stopped with your foot on the brake.
chiken
Bad shocks
You need struts
probably your rearend
tie rod