Citation II L4-151 2.5L VIN R TBI (1984)
PROM - Programmable Read Only Memory: Customer Interest
Engine - Spark Knock
Number:
84-111
Section:
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