GM TechLink 2005-05-81
Original text and source
Original text
Upper Manifold Gasket Leak
This information applies specifically to the 5.3L L59 (E85 capable), as well as the other Gen 3 and Gen 4 engines.
If a leak between the upper manifold and gasket causes a DTC P0300 to set, do not replace the entire upper manifold assembly, upper plenum and gaskets.
If a leak between the upper manifold and gasket causes a DTC P0300 to set, do not replace the entire upper manifold assembly, upper plenum and gaskets.
A new gasket made of FNK material (GM SPO p/n 89017589) has been released. The new gasket material is teal green in color (fig. 7) ; the original gaskets are orange.
The service kit containing the new gasket was released in October 2004. A small quantity of the old gasket kit, p/n 17113557, which contains two p/n 17122608 (orange) gaskets, remains in the system.
Use only the 89017589 gasket (teal green) for repairs on the L59 engine, and do not replace the upper manifold unless it measures outside of the service manual specifications or is damaged.
The 17113557 gasket (orange) can be used on the other engines. Once the 17113557 has been exhausted, only the 89017589 will be available for all engines.
Source
- Source
- GM TechLink — Communication from a manufacturer to dealers (summary published by a government agency)
- Reporter type
- Manufacturer
- Source reference
- 2005-05-81
- Country / market
- US
- Language
- en
- Document version
- Version 1 (1 held)
- Note on the source
- Copyright General Motors Corporation. No licence is stated. Held as the headline and short quoted passages with the issue named and linked; the articles themselves are not stored or shown.
Dates
- Incident date
- Unknown
- Received by source
- 2005-05-01
- Added to the source's file
- Unknown: not returned by the source API
- Issued / published
- 2005-05-01
- First observed
- 2026-10-09 12:52 UTC (initial bulk load)
- This version fetched
- 2026-10-09 12:52 UTC