Service bulletins for the 1999 GMC Sierra
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
282 on file from NHTSA, as of 2026-10-19.
About P0446 on the 1999 GMC Sierra: what the code means, and the bulletins and recalls about the same components.
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By component
By trouble code
By topic
Only bulletins with trouble code: P0446 are shown. Show all
| PIE-0043 | 2010-11-15. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES. CHEVROLET:GMC: ENGINEERING INFORMATION-FUEL TANK PRESSURE SENSOR, DTCS P0446, P0451 OR P0454 SET. GMC ENGINEERING IS ATTEMPTING TO DETERMINE THE ROOT CAUSE OF THE ABOVE CONCERN. *PE |
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| 030602 | 2002-11-20. Service bulletin. FUEL SYSTEM, GASOLINE. SOME VEHICLES MAY DISPLAY A DIAGNOSTIC TROUBLE CODE OF P0446 (EVAP CANISTER VENT). *TT |
| 02-06-04-037 | 2002-10-09. Service bulletin. UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:ENGINE. SOME CUSTOMERS WHOSE VEHICLES ARE OPERATED IN DUSTY TYPE ENVIRONMENTS, SUCH AS FARMING OR MINING OFF-ROAD TYPE APPLICATIONS, MAY COMMENT ABOUT THE ILLUMINATION OF THE INSTRUMENT PANEL SES LIGHT, WITH DIAGNOSTIC TROUBLE CODE P0446 SET. *TT UPDATED 7/11/08. *NJ UPDATED 11/5/10. *PE |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.