PROM - Backfire During Wide Open Throttle 1-2 Upshift

Number:
92-336-6E

Section:
6E

Date:
DEC. 1992

Corporate Bulletin No.:
236515

ASE No.:
A1, A8



Subject:
ENGINE BACK FIRE DURING WIDE OPEN THROTTLE (WOT) 1-2 UPSHIFT


Model and Year:
1992 CORVETTE WITH 5.7L ENGINE (RPO LT1) AND AUTOMATIC TRANSMISSION



CONDITION:

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.

CORRECTION:

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

Part Availability:

Parts are currently available.

Warranty Information:

Labor Operation: T0500

Labor Time: 0.5 Hr.