1994 Chevrolet M Series

Service bulletins

Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.

• 10246631Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
• 10168979This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code. The PI update to version D is to advise the unlock procedure is temporarily unavailable. E version update is to add administrative details.
• 10165876This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code. The PI update to version D is to advise the unlock procedure is temporarily unavailable.
• 10141381This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco Theft Lock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code.
• 6089330Special policy adjustment for vehicles experiencing a hard start condition, rough running engine, a service engine soon light, misfire, no start, stalls or catalytic converter order due to failure of the central multiport fuel injection (cmfi) fuel system.
• 628938Information used when diagnosing noise conditions such as engine rattle noise, spark knock at 2000 - 2500 rpm range, under a moderate to heavy load with a warmed up engine.
• 612157Some vehicles may experience a hard start condition, rough running engine, a service engine soon light, misfire, no start, stalls or catalytic converter odor due to failure of the central multiport fuel injection (cmfi) fuel system also known as central port injection (cpi).
• 609762Some vehicles that are registered in california, equipped with a 4.3L, 5.0L or 5.7L engine and california emissions, may experience a service engine soon light, misfire, rough idle or hard start.
• 609703A boom noise inside the vehicle while driving at speeds ranging between 97 - 105 km/h (60 - 65 mph). This bulletin IS revised and replaced bulletin 00-03-09-001 dated 01/01/2000. Updated
• 609696Some customers may comment on rough idle after start up, and / or a service engine soon (ses) light illuminated.
• 609641Park/neutral position switch connector cannot be removed. Yd
• 609582Rough idle after start, when vehicle has sat overnight and poppets sticking.
• 607944Special policy covering failure of the central multiport fuel injection (cmfi) system.

Every Chevrolet M Series model year

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