# Service bulletin 376105

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.

- Type: Service bulletin
- NHTSA id: 39304
- Published by NHTSA: 1995\-11\-01
- Manufacturer's number: 376105
- Manufacturer's date: 1995\-02\-01
- Replaces: 93\-6A\-111
- NHTSA component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

## NHTSA's summary

COLD ENGINE KNOCK. \*TW

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Engine

## Vehicles listed

- 1990 to 1994 CHEVROLET ASTRO
- 1990 to 1994 CHEVROLET C SERIES\(LIGHT\)
- 1990 to 1994 CHEVROLET G SERIES
- 1990 to 1994 CHEVROLET P SERIES
- 1990 to 1994 CHEVROLET S10
- 1990 to 1994 CHEVROLET SUBURBAN
- 1990 to 1994 GMC C SERIES\(LIGHT\)
- 1990 to 1991 GMC G SERIES
- 1993 GMC G SERIES
- 1990 to 1991 GMC JIMMY
- 1992 to 1994 GMC JIMMY
- 1990 to 1994 GMC P SERIES
- 1990 to 1994 GMC SAFARI
- 1990 to 1994 GMC SUBURBAN
- 1991 to 1992 OLDSMOBILE BRAVADA

## Other bulletins for the same vehicles and component

- [130089009](/bulletins/10246631.md), 2023-12-11, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). Expanded Availability for Remanufacture and Return \(R\&R\) Electronic Control Modules
- [000601023A](/bulletins/628938.md), 2002-03-25, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. INFORMATION 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. \*TT
- [000601019](/bulletins/616349.md), 2001-02-23, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME OWNERS MAY COMMENT ON HIGH OIL CONSUMPTION AFTER A GM GOODWRENCH REMANUFACTURED 4.3L V6 ENGINE IS INSTALLED. \*TT
- [000604002](/bulletins/609709.md), 2000-04-06, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SUBJECT REGARDING A HARD, NO START OR EXCESSIVE GRAY OR WHITE SMOKE CONDITION ON START UP AFTER RECENT GLOW PLUG REPLACEMENT. \*TT
- [776306](/bulletins/600430.md), 1998-05-14, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE. COMMENTS OF A NO START, STALL CONDITION. \*YC
- [98831110](/bulletins/600270.md), 1998-05-01, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. VEHICLES WITH 6.0L AND 7.0L ENGINES \(VINS P, M \- RPOS LS0, LR0\) MAY EXHIBIT ENGINE EXHAUST NOISE WHICH IS LOUDEST DURING COLD ENGINE OPERATION. \*YC
- [96067A](/bulletins/52576.md), 1997-08-21, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\). SPECIAL POLICY ADJUSTMENT \- LINEAR EXHAUST GAS RECIRCULATION SYSTEM. \*TW
- [96067](/bulletins/51281.md), 1997-06-27, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\). POLICY ADJUSTMENT \- LINEAR EXHAUST GAS RECIRCULATION SYSTEM. \*TW
- [236111](/bulletins/45824.md), 1996-04-25, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE. CPI ENGINE NOISE \(INSTALL NEW GEARS/NEW MEM\-CALS\). \*SD
- [RCL/91C50](/bulletins/41063.md), 1995-11-01, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. RECALL 91\-C\-50 \- GENERAL MOTORS HAS DETERMINED THAT CERTAIN 1991 CHEVRTOLET C/K TRUCKS, M/L AND G VANS EQUIPPED WITH 4.3L ENGINES \[RPO LB4 OR RPO LU2 \(M VAN ONLY\)\] MAY BE EMITTING NON\-METHANE HYDROCARBONS \(NMHC\) IN EXCESS OF CALIFORNIA EMISSIONS STANDARDS. CALIFORNIA EMISSIONS STANDARDS WERE ESTABLISHED TO PROTECT THE PUBLIC HEALTH AND WEALFARE FROM DANGERS OF AIR POLLUTION. EXCESS EMISSION OF NMHC MAY CAUSE A VEHICLE TO FAIL STATE MANDATED EMISSION TESTS. TO CORRECT THIS CONDITION, DEALERS ARE TO INSTALL A NEW OXYGEN SENSOR. \*TW

JSON: [/v1/bulletins/39304](/v1/bulletins/39304)

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