GM Service Manual Online
For 1990-2009 cars only

Drive Type/Model

Service Allowed

Service Preferred

Z Trim Height

  • RWD

67-79 mm (2.6-3.1 in)

73 mm (2.9 in)

  • S4WD (except ZR2)

116-128 mm (4.6-5.0 in)

122 mm (4.8 in)

  • S4WD

116-131 mm (4.6-5.2 in)

123.5 mm (4.9 in)

D Trim Height

  • Pickup

130.7-161.5 mm (5.1-6.4 in)

146.1 mm (5.8 in)