Rear Axle Specifications. Pontiac Firebird 1999

GM Service Manual Online

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 1999 🢒 Firebird 🢒 Driveline/Axle 🢒 Rear Drive Axle 🢒 Rear Axle Specifications

Rear Axle Specifications General Specifications

Application	Specification
Application	Metric	English
Rear Axle Type	Semi-Floating Hypoid
Drive and Torque	Through 4 Arms
Ring and Drive Pinion Gear Set Type	Hypoid
Rear Axle Lubricant Capacity	1.65 L	3.5 pt.
Rear Axle Lubricant
Standard and Limited Slip Differential	Synthetic 75W-90 Gear Lubricant (GM P/N 12378261) meeting GM spec. 9986115, or equivalent
Limited Slip Differential Additive (GM P/N 1052358), or equivalent	118 ml	4 fl. oz.

Rear Axle Specifications Bearing Shim Thickness

Production Differential Bearing Shim Thickness (Standard Spacer)

Metric	English
DEFINITION: The total thickness of both the production differential bearing shims removed.
10.57 mm	0.416 in
10.92 mm	0.430 in
11.18 mm	0.440 in
11.43 mm	0.450 in
11.68 mm	0.460 in
11.94 mm	0.470 in
12.19 mm	0.480 in
12.45 mm	0.490 in
12.70 mm	0.500 in
12.95 mm	0.510 in
13.21 mm	0.520 in
13.46 mm	0.530 in
13.97 mm	0.550 in

Service Differential Bearing Shim Thickness (Standard Spacer)

Metric	English
DEFINITION: The total thickness of the service differential bearing shims to be used as a starting point.
1.52 mm	0.060 in
1.78 mm	0.070 in
2.03 mm	0.080 in
2.29 mm	0.090 in
2.54 mm	0.100 in
2.79 mm	0.110 in
3.05 mm	0.120 in
3.30 mm	0.130 in
3.56 mm	0.140 in
3.81 mm	0.150 in
4.06 mm	0.160 in
4.32 mm	0.170 in
4.83 mm	0.190 in