GM Service Manual Online
For 1990-2009 cars only

Drive Type/Model

Service Allowed

Service Preferred

Z Trim Height

RWD

74 to 86 mm (2.86 to 3.34 in)

80 mm (3.10 in)

AWD

130 to 142  mm (5.16 to 5.64 in)

136 mm (5.40 in)

D Trim Height

All

135 to 145 mm (5.31 to 5.71 in)

140 mm (5.50 in)