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Service bulletins for the 1996 Chevrolet G-Series

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.

60 on file from NHTSA, as of 2026-10-19.

About P1870 on the 1996 Chevrolet G-Series: what the code means, and the bulletins and recalls about the same components.

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By component

By trouble code

Only bulletins with trouble code: P1870 are shown. Show all

Bulletins, newest first
667103A1999-12-20. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. AUTOMATIC TRANSMISSION 1-2 AND/OR 2-3 UPSHIFT SLIP/FLARE, NO 3RD OR 4TH GEAR, DTC P1870, LAUNCH SHUDDER (REVISE VCM WIRING). *AK
9774L60E08A1997-08-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. AUTOMATIC TRANSMISSION 1-2 AND/OR 2-3 UPSHIFT SLIP/FLARE, NO 3RD OR 4TH GEAR, DTC P1870, LAUNCH SHUDDER (REVISE VCM WIRING). *TW

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.