- 1986–1987 Single-source
3rdgenformula names a Borg-Warner 9-bolt axle; Firebird years: thirdgen.org label decodes 1986; 3rdgenformula option pages 1987
GH3 Factory-verified
Also described as Axle, rear, 2.77 ratio
Also documented for Chevrolet
Documented applications
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; destination-market code;
This page aggregates every documented appearance of GH3 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.