Subject: ENGINE NOISE-INSTALL BUSHING 5.7L V8 (RPO LT5)Model and Year: 1990-92 CORVETTE WITH 5.7L ENGINE (RPO LT5) AND MANUAL TRANSMISSIONSource: Chevrolet Service BulletinBulletin Number: 92-230-6 - (06/15/1992) Condition: Some owners of 1990-92... Read More
1990 - 1995 Corvette ZR-1
Subject: NO START CONDITION (STARTER CORROSION-REPLACE STARTER) Model and Year: 1990-1992 Corvette, Engine Code J (LT5) Source: Chevrolet Service Bulletin Bulletin Number: 92-307-6 - (09/21/1992) CONDITION: Some ZR1 Corvettes may exhibit... Read More
Subject: HARD STARTING DURING A HOT RESTART, INCREASE IN IDLE SPEEDS, AND IDLE FLUCTUATION (REPLACE MEM-CAL) Model and Year: 1990-91 CHEVROLET CORVETTE WITH 5.7L ENGINE (VIN J - RPO LT5) AND MANUAL 6-SPEED TRANSMISSION (ML9)Source: Chevrolet Service... Read More
Subject: ENGINE SERVICE PROGRAM - LT5 5.7L CORVETTE ZR1 ENGINE (VIN CODE J)Model and Year: 1990-92 CORVETTE ZR1Source: Chevrolet Service BulletinBulletin Number: 92-228-6 - (06/01/1992) THIS BULLETIN CANCELS AND SUPERSEDES DEALER SERVICE BULLETIN NO.... Read More
LT5 Secondary Port Operation & Vacuum Diagnosis by Robert Loszewski Copyright 2001 Before getting into diagnosing the LT5 engine's secondary port vacuum system, I thought it would be a good idea to take this opportunity to clear up a few... Read More
Subject: CAMPAIGN: FUEL LINES MAY CRACK/FUEL LEAK Model and Year: 1990 CHEVROLET CORVETTES WITH LT5 ENGINESSource: Chevrolet Service BulletinBulletin Number: 90-C-10 - (01/30/1990) The National Traffic and Motor Vehicle Safety Act, as amended,... Read More
Subject: LEAKING RADIATOR HOSE SERVICE (REPLACEMENT OF RADIATOR HOSE)Model and Year: 1990 CORVETTE WITH 5.7L (VIN CODE J) ENGINESource: Chevrolet Service BulletinBulletin Number: 90-308-6B - (07/19/1990) TO: ALL CHEVROLET DEALERS Condition: Some of... Read More
Subject: LACK OF WOT-LOW ENGINE POWER REVISED CABLE ADJUSTMENT PROC. Model and Year: 1992 CORVETTE ZR-1 WITH 5.7L ENGINE AND MANUAL TRANSMISSION Source: Chevrolet Product Emission Campaign Bulletin Number: 92-214A-7B - (07/01/1992) THIS... Read More
From Greg Van Deventer, Mercury Marine - October 18, 2000: "The A.L. Dunn cylinder heads have as cast intake and exhaust ports. All cylinder heads up to that point were from the same mold. The '90 - '92 cylinder heads were as cast, ... Read More
The correct color code for the 1994 - 1995 Corvette ZR-1 5-spoke wheels is Dupont #C9201 or GM #WH9819. Read More