Engine Oil Additives / Engine Oil Flushes
Do not add anything to the oil. The recommended oils with the starburst symbol that meet GM Standard GM6094M are all that is needed for good performance and engine protection.
Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty.
See also:
How to Add Coolant to the CoolantRecovery Tank
If you have not found a problem yet, but the
coolant level is not at the FULL COLD mark, add
a 50/50 mixture of clean, drinkable water and
DEX-COOL® engine coolant at the coolant
recovery tank.
...
StabiliTrak® Indicator Light
This warning light
should come on briefly
when the engine is
started.
During most driving conditions, this light will not
come on. If the StabiliTrak® System is actively
controlling the sta ...
Engine Drive Belt Routing
4.2L V6 Engine
5.3L V8 Engine ...