1. The brakes always squeal in reverse.
(A) No, there is something wrong = time to inspect your brakes.
Brake: http://www.peachparts.com/shopforum/showthread.php?t=142411


2. The car slams into reverse when its warmed up, but never on the first backup of the day or if I put it in park before I reverse it's somewhat of a lesser blow.
(A) Transmission: http://www.peachparts.com/shopforum/showthread.php?t=142395



3. In the morning, when I put the car in reverse or drive, I feel and hear creaks and grinds coming from the front and rear of the car which go away when the car is warmed up.
(A) Suspension: http://www.peachparts.com/shopforum/showthread.php?t=142397
Steering: http://www.peachparts.com/shopforum/showthread.php?t=142398



4. The brakes make grinding noises when I come to a stop when the cars not warmed up. And no, the pads do not need to be replaced as they are under 50 percent worn.
(A) No, there is something wrong = time to inspect your brakes.
Brake: http://www.peachparts.com/shopforum/showthread.php?t=142411






Have a great day.

__________________
ASE Master Mechanic

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D

https://www.boldegoist.com/