- 1998 Factory-verified
GM prints "(97)".
53U Factory-verified
Also documented for BuickChevroletGMCPontiac
Documented applications
- 1998 Factory-verified
GM prints "(97)".
- 1998 Factory-verified
GM prints "(97)" after the name.
- 1998–1999 Factory-verified
GM prints "(97)"
This page aggregates every documented appearance of 53U in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.