Service bulletins for the 2003 Chevrolet Avalanche
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.
746 on file from NHTSA, as of 2026-10-19.
About C0327 on the 2003 Chevrolet Avalanche: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: C0327 are shown. Show all
| 3665 | 2006-01-25. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). 4WD INOPERATIVE AND POSSIBLE DTC C0327 STORED IN THE TRANSFER CASE CONTROL MODULE. *TT |
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| 3061C | 2004-12-03. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC TROUBLE CODE C0327 WITH OR WITHOUT ADDITIONAL DIAGNOSTIC TROUBLE CODES SETTING. *TT |
| 030421001D | 2004-02-11. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). 4-WHEEL DRIVE SWITCH INDICATOR LIGHTS FLASHING, 4-WHEEL DRIVE INOPERATIVE, DIAGNOSTIC TROUBLE CODES C0327, P0836, P0500. *TT |
| 011603 | 2004-01-30. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). CONCERNS WITH THE SERVICE FOUR-WHEEL DRIVE LIGHT OR THE FOUR-WHEEL DRIVE IS INOPERATIVE WITH A C0327 CODE STORED IN THE TCCM. GM VOICEMAIL EXPRESS. *TT |
| 00690B | 2003-11-24. Service bulletin. ELECTRICAL SYSTEM. DIAGNOSTIC TROUBLE CODE C0327 WITH OR WITHOUT ADDITIONAL DIAGNOSTIC TROUBLE CODES (DTCS) SETTING. *TT |
| 030421001C | 2003-09-29. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). 4-WHEEL DRIVE SWITCH INDICATOR LIGHTS FLASHING, 4-WHEEL DRIVE INOPERATIVE, DIAGNOSTIC TROUBLE CODES C0327, P0836, P0500. *TT |
| 030421001 | 2003-04-15. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). 4-WHEEL DRIVE LIGHT, 4-WHEEL DRIVE INOPERATIVE, DIAGNOSTIC TROUBLE CODES C0327, P0836, P0500. *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.