GMC Cadillac XT4 2019 Owner's Manual page 313

312 SERVICE AND MAINTENANCE
Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check 0 262.
Check accelerator pedal for
damage, high effort, or binding.
Replace if needed.
Visually inspect gas strut for signs
of wear, cracks, or other damage.
Check the hold open ability of the
strut. If the hold open is low,
service the gas strut. See Gas
Strut(s) 0 264.
Inspect sunroof track and seal,
if equipped. See Sunroof 0 56.