1992 Corvette: Service Bulletin: Engine Backfire During W.O.T. 1-2 Upshift
Subject: ENGINE BACKFIRE DURING W.O.T. 1-2 UPSHIFT (RPL. MEMCAL)
Model and Year: 1992 CORVETTE WITH 5.7L ENGINE (RPO LT1) AND AUTOMATIC TRANSMISSION
Source: Chevrolet Service Bulletin
Bulletin Number: 92-336-6E - (12/01/1992)
Some owners of 1992 Corvettes with the LT1 (VIN P 5.7L V8) engine and automatic transmission may comment on an engine backfire during a wide open throttle (W.O.T) 1-2 upshift.
The calibration has been refined to address this concern, replace the memcal with the appropriate one from the chart below.
Broadcast Scanner Part Body Code I.D. Number Style Axle
--------- ------- ------ ----- ----
BDBJ 4681 16184669 Coupe G44
BDBK 4691 16184672 Coupe/Conv GM1
BCBL 4701 16184678 Coupe/Conv GU2
BDBF 4661 16184667 Conv G44
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