Service bulletins for the 2003 Chevrolet Trailblazer
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.
682 on file from NHTSA, as of 2026-10-19.
About P1516 on the 2003 Chevrolet Trailblazer: 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: P1516 are shown. Show all
| PIP4573B | 2017-08-15. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary Information communication provides information to the technician about vehicles that may have Service Engine Soon Malfunction Indicator Lamp on and a reduced engine power after cold starting their engine when the ambient temperature is approximately ? 10 Fahrenheit (-23 Celsius). Technician may find Diagnostic Trouble Codes P1516, P2101, P2119, and/or P2176. Technician may find some vehicles may have an oil leak from the front or rear crank seal, cam cover gasket, or dipstick tube as well. Technician will need to determine if the concern is the result of a frozen positive crankcase ventilation system. To determine if the concern is the result of a frozen positive crankcase ventilation system on inline 4 and 5 engines disconnect the positive crankcase ventilation vacuum pipe that is attached to the rear of cam cover and inspect the inside of it for ice, moisture, and/or sludge. Also inspect the engine oil dipstick and engine oil fill cap for moisture, sludge, and/or ice. To determine if the concern is the result of a frozen positive crankcase ventilation system on inline 6 carefully disconnect the top or the bottom of the rubber positive crankcase ventilation vacuum hose that is between the #3 and #4 intake runners and inspect for ice. Also inspect the engine oil dipstick and engine oil fill cap for moisture, sludge, and/or ice. If the positive crankcase ventilation is not determined to be frozen follow Service Information diagnosis and any other bulletins or Preliminary Information that apply to the vehicle you are working on. If there is moisture, ice, and/or sludge in/on the oil fill cap, oil dipstick, and/or positive crankcase ventilation vacuum tube, this is most likely the result of a frozen positive crankcase ventilation system and the suggestions in the Preliminary Information should be followed. Technician should clean any ice, sludge, water out of the positive crankcase ventilation pipes, hoses and throttle body, and allow them to dry. Te |
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| 3089 | 2004-10-04. Service bulletin. ELECTRICAL SYSTEM. SERVICE ENGINE SOON LIGHT AND REDUCED ENGINE POWER WITH A DIAGNOSTIC TROUBLE CODE P1516. DIAGNOSTIC TROUBLE CODES P0120, P0220, P1514, P1515, P1518 AND P2135 MAY ALSO BE PRESENT. *TT |
| 3041 | 2004-09-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON LIGHT AND / OR REDUCED ENGINE POWER MODE DUE TO DIAGNOSTIC TROUBLE CODES P0120, P0220, P1516 AND/OR P1518. THIS CONDITION IS NORMALLY VERY INTERMITTENT. *TT |
| 00827C | 2003-11-24. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON (SES) LIGHT ON WITH TAC MODULE CODES P1516 AND POSSIBLE CODES P1514, P1515, P1518. *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.