Engine - Blue/White Smoke From Tailpipe

87chevy01

Number: 87-156

Section: 6E

Date: JUNE, 1987

Subject: BLUE/WHITE SMOKE FROM TAILPIPE


Model and Year: 1986 AND 1987 S/T TRUCKS WITH 2.8L
V-6 ENGINE (VIN CODE R) AND FEDERAL EMISSIONS

TO: ALL CHEVROLET DEALERS


Some 1986 and 1987 S/T Trucks with 2.8L V-6 engines and Federal Emissions may exhibit a blue/white smoke from the tailpipe after an extended idle.

To repair this condition, check the truck for loss of coolant or excessive use of oil and repair, if necessary.

If engine checks O.K. (no oil or coolant loss), replace the PROM using the chart on the back of this Bulletin for application and part numbers. Use the service procedure in Section 6E-Engine Emissions and Driveability of the appropriate service manual.

Use applicable labor time and operation numbers.
SERVICE PROM APPLICATION


MODEL MODEL TRANSMISSION AXLE SERVICE
YEAR PROM


86/87 S/T M4 ALL 1228541

86/87 S/T M5 3.73 1228542
3.42

86/87 S/T M5 4.11 1228543

86/87 S A4 ALL 1228544

86 T A4 3.73 1228545

87 T A4 3.73 1228544

86/87 T A4 4.11 1228545


(For 2.8L 1986/87 Federal Emissions applications only.)