Engine - Spark Knock
Number: 84-111Section: 6E (VIt)
Date: July, 1984
Subject: SPARK KNOCK COMMENTS
Model and Year: 1984 CAMARO, CELEBRITY, AND CITATION WITH 2.5L ENGINE
TO: ALL CHEVROLET DEALERS
This cancels and replaces 84-111 dated June, 1984 which should be destroyed. This copy identifies an additional axle ratio and a revised TCC engagement speed.
A customer comment of spark knock on the 2.5L engine may be received. If normal diagnosis in Section 6E2 of the Service Manual does not repair this condition, a new PROM may be installed, as listed below. This condition applies only to vehicles with automatic transmissions/transaxles.
Celebrity and Citation With 2:39 Axle P/N 1226909
Celebrity and Citation With 2:84 Axle
(Also Increases TCC Engagement Speed
to 38 MPH) P/N 1226909
Camaro With 3:73 Axle P/N 1226911