Service bulletins for the 2003 GMC Envoy
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.
693 on file from NHTSA, as of 2026-10-19.
About P0016 on the 2003 GMC Envoy: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
Only bulletins with trouble code: P0016 are shown. Show all
| PIP4581B | 2018-06-04. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV); EQUIPMENT. This Preliminary Information communication provides information to the technician about vehicles that may have an engine rattle that star after the engine was repaired ant the repair required the crankshaft balancer removal and replacement. When the rattle noise is duplicated without the Service Engine Soon Malfunction Indicator Lamp and Service Information diagnosis does not isolate the cause the crankshaft balancer bolt should be re-torqued per the specifications states in Service Information. When the rattle noise is duplicated with the Service Engine Soon Malfunction Indicator Lamp and Diagnostic Trouble Code P0016 or P0017 and Service Information diagnosis does not isolate the cause the crankshaft balancer bolt should be re-torqued per the specifications states in Service Information. If tightening the bolt repairs the rattle noise but the Diagnostic Trouble Code P0016 or P0017 continue to set technician should follow published Service Information diagnostics for the Diagnostic Trouble Code. If Service Information diagnostics for the Diagnostic Trouble Code do not lead to a repair for the Diagnostic Trouble Code remove the crankshaft timing sprocket and inspect the crankshaft alignment pin and the related groove of the sprocket for obvious wear. If wear is present replace the sprocket and pin and retest. |
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| 3659A | 2006-02-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SES LIGHT AFTER INTERNAL ENGINE REPAIRS DUE DTC P0016 OR P1345. *TT |
| 00156A | 2004-07-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 4.2L LL8 ENGINE ROUGH IDLE - RUN POSSIBLE P1345 OR P0016. *MJ *TT |
| 01623 | 2004-06-03. Service bulletin. ELECTRICAL SYSTEM. 4.2 LL8 ENGINE DIAGNOSTIC TROUBLE CODE P0016 OR P1345 WITH NO DRIVEABILITY SYMPTOMS.*MR |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.