Radio - Popping Noise Due to Spark Plugs

87chevy27
Number: 88-107-6E

Section: 6E

Date: JAN., 1988
Subject: RADIO POPPING NOISE DUE TO SPARK PLUGS


Model and Year: 1988 LIGHT DUTY TRUCKS WITH
4.3L, 5.0L AND 5.7L ENGINES (VIN CODES Z, H AND K)
TO: ALL CHEVROLET DEALERS


Some 1988 trucks with 4.3L, 5.0L and 5.7L engines may experience a popping noise in the radio due to the use of AC CR43TS spark plugs. This condition can be repaired by replacing the CR43TS plugs with R43TS plugs (P/N 5613325). R43TS plugs entered production with engines produced since August 30, 1987. Spark plug gap specification is 0.035".