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1990 - 1995 Corvette ZR-1 Articles RSS Feed
1988 - 1990 Corvette: Service Bulletin: Power Steering Shudder / Groan
Viewed 8612 times since Wed, Jul 30, 2014
Subject: POWER STEERING SHUDDER/GROAN INSTALL P/S COOLER & HOSE Model and Year: 1988-90 CORVETTE WITH 5.7L ENGINE Source: Chevrolet Service Bulletin Bulletin Number: 90-376-3B - (10/25/1990) Condition: Some 1988-90 Y-cars with either... Read More
1989 - 1990 Corvette: Howling, or Squealing Sound Coming From Clutch
Viewed 739 times since Tue, Jul 29, 2014
From Jim Ingle, GM Powertrain Engineer:"The problem you're most likely experiencing is a noisy crankshaft pilot bushing. There is a later design released for service that tends to retain grease better than the one you have and therefore doesn&... Read More
1989 - 1990 Corvette: Service Bulletin: Transmission Exchange Program 6 Speed M/T (ML9)
Viewed 2920 times since Tue, Jul 29, 2014
Subject: TRANS. EXCHANGE PROGRAM 6 SPEED M/T (ML9)Model and Year: 1989-91 CORVETTE ZF 6-SPEED MANUAL TRANSMISSION WITH ML9 OPTIONSource: Chevrolet Service BulletinBulletin Number: 91-89-7B - (10/31/1990) TO: ALL CHEVROLET DEALERS THIS BULLETIN... Read More
1989 - 1996 Corvette: Differences between First and Second Generation ZF 6-Speed Transmissions
Viewed 1105 times since Tue, Jul 29, 2014
From ZF regarding ZF transmission noise and differences between the ZF used in early and late ZR-1s - July 12, 2000: "All S6-40 transmissions installed in the C4 Corvette contain 100% helical gears.  In fact, all of the gearboxes ZF produces for... Read More
1989 - 1996 Corvette: Service Bulletin: Information on Corvette ZF 6-Speed Manual Transmission Service Procedure
Viewed 4557 times since Tue, Jul 29, 2014
Model Year: 1989-96 CHEVROLET CORVETTE WITH ZF 6-SPEED MANUAL TRANSMISSION (ML9) Subject: INFORMATION ON CORVETTE ZF 6-SPEED MANUAL TRANSMISSION SERVICE PROCEDURE Source: Chevrolet Dealer Service Bulletin Bulletin Number: 77-72-04 ... Read More
1990 - 1991 Corvette: Service Bulletin: Hard Start on Hot Restart / Increased Idle Speed
Viewed 3581 times since Thu, Jul 24, 2014
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
1990 - 1992 Corvette ZR-1: Service Bulletin: Engine Noise - Install Bushing
Viewed 813 times since Thu, Jul 24, 2014
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 - 1992 Corvette ZR-1: Service Bulletin: Engine Service Program
Viewed 2885 times since Thu, Jul 24, 2014
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
1990 - 1992 Corvette ZR-1: Service Bulletin: No Start Condition (Replace Starter)
Viewed 4860 times since Thu, Jul 24, 2014
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
1990 - 1995 Corvette ZR-1: Body Emblem Part Numbers
Viewed 803 times since Thu, Jul 24, 2014
The following are part numbers for the various emblems on a ZR-1. Always check with your local Chevrolet dealer for the latest part number for these items:"CORVETTE" Emblem - Rear Bumper10153697 --- 1990 Turquoise Metallic (42U)10172314 --- 1991 ---... Read More
1990 - 1995 Corvette ZR-1: Diagnosing Low Tire Pressure Warning System Codes
Viewed 22174 times since Mon, Jun 30, 2014
The following article appeared in the Spring 2014 issue of the NCRS Corvette Restorer, written by Mike Ingham and is used here with his permission: Adventures In LTPWS Land by Mike Ingham This story concerns the Low Tire Pressure Warning... Read More
1990 - 1995 Corvette ZR-1: Technical Article: LT5 Secondary Port Operation & Vacuum Diagnosis
Viewed 1552 times since Thu, Jul 24, 2014
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
1990 - 1995 Corvette ZR-1: Wheel Well: Locating the panel that fits in the rear portion of the right front wheel well
Viewed 601 times since Thu, Jul 24, 2014
You won't find that GM discontinued part (discontinued in 1999) unless it's from someone parting-out or willing to sell a part of an assembly.SECRET:Try a non-ZR1 panel and retrofit it by drilling holes to attach a ZR1's control... Read More
1990 - 1995 Corvette | ZR-1: AC Compressor Specifications
Viewed 643 times since Thu, Jul 24, 2014
Type: NippondensoDisplacement: LT5 - 10.0 cubic inches L98 - 12.7 cubic inches Read More
1990 Corvette ZR-1: Service Bulletin: Engine Exchange Program
Viewed 1128 times since Fri, Nov 28, 2014
Subject:   Engine Exchange Program Model and Year:   1990 Corvette with LT5 (VIN Code J) Engine Source:  Chevrolet Dealer Service Bulletin Bulletin No:   90-59-6 Section:   6 Date:    September 1989 TO:  ALL CHEVROLET... Read More
1990 Corvette ZR-1: Campaign: Fuel Lines May Crack / Fuel Leak
Viewed 716 times since Thu, Jul 24, 2014
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
1990 Corvette ZR-1: Service Bulletin: Leaking Radiator Hose Service
Viewed 644 times since Thu, Jul 24, 2014
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
1990 Corvette: Recall: Inoperative Parking Brake
Viewed 1173 times since Wed, Jul 30, 2014
Subject: CAMPAIGN: INOPERATIVE PARKING BRAKE Model and Year: 1990 CHEVROLET CORVETTESource: Chevrolet Service BulletinBulletin Number: 90-C-09 - (01/24/1990) General Motors has determined that certain 1990 Chevrolet Corvette model vehicles may... Read More
1990 Corvette: Recall: Instrument Panel Wire Abrasion - Repair
Viewed 1052 times since Mon, Jul 28, 2014
Subject: CAMPAIGN: INSTRUMENT PANEL WIRE ABRASION - REPAIR Model and Year: 1990 CHEVROLET CORVETTE W/ L98 OR LT5 ENGINESource: Chevrolet Service BulletinBulletin Number: 90-C-07 - (01/17/1990) General Motors has determined that certain 1990 Chevrolet... Read More
1990 Corvette: Recall: Product Campaign 90C07 Instrument Panel Wire Abrasion
Viewed 721 times since Mon, Jul 28, 2014
Model Year: 1990 w/ L98 or LT5 Engine Subject: Product Campaign 90C07 Instrument Panel Wire Abrasion Source: Chevrolet Dealer Product Campaign Bulletin Number: 90C07 Section:   8C Date: January, 1990 TO: ALL CHEVROLET DEALERS ... Read More
1990 Corvette: Service Bulletin: L98 and LT5: Revised Air Conditioning Control Circuit Diagnosis
Viewed 2898 times since Sat, Aug 2, 2014
Subject: REVISED AIR CONDITIONING CONTROL CIRCUIT DIAGNOSIS Model and Year: 1990 CORVETTE WITH 5.7L L98 AND LT5 ENGINES Source: Chevrolet Dealer Service Bulletin Bulletin Number: 90-400-6E THIS BULLETIN CANCELS AND SUPERSEDES DEALER... Read More
1990 Corvette: Service Bulletin: Loss of Heating or Cooling Control
Viewed 1511 times since Fri, Aug 1, 2014
Subject: Loss of Heating or Cooling Control - New ProgrammerModel and Year: 1990 CORVETTESource: Chevrolet Service BulletinBulletin Number: 90-378-1A - (10/25/1990)TO: ALL CHEVROLET DEALERSCondition:The customer may comment on a loss of heating or... Read More
1991 Corvette: Service Bulletin: Loss of Heat/Cooling Control
Viewed 1258 times since Fri, Aug 1, 2014
Subject: LOSS OF HEAT/COOLING CONTROL REVISED PROGRAMER AVAILABLE Model and Year:1991 CORVETTE WITH 5.7L ENGINESource: Chevrolet Service BulletinBulletin Number: 91-200-1A - (02/04/1991) Condition: On some vehicles the temperature of air coming from... Read More
1992 - 1996 Corvette: Tech Article: Quietly Powerful: How to Build a C4 LT1/4/5 Exhaust that Gains 28 hp and...is Quiet
Viewed 5256 times since Sat, Jul 26, 2014
Quietly Powerful: How to Build a C4 LT1/4/5 Exhaust that Gains 28 hp and...is Quiet Text and Images by Hib Halverson ©2003 Shark Communications No Use Without Permission   Click image for larger view A Flowmaster cat-back exhaust... Read More
1992 Corvette ZR-1: Service Bulletin: Lack of Wide Open Throttle Engine Underpower
Viewed 715 times since Thu, Jul 24, 2014
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
1993 - 1994 Corvette: Service Bulletin: Intermittent ASR Service Light
Viewed 2896 times since Wed, Jul 30, 2014
Subject: INTERMITTENT ASR SERVICE LIGHT (REPLACE MEM-CAL)Model and Year: 1993-94 CHEVROLET CORVETTE WITH 5.7L ENGINE (VIN J - RPO LT5) AND MANUAL 6-SPEED (ML9) TRANSMISSIONSource: Chevrolet Service BulletinBulletin Number: 47-50-01CONDITION:SOME... Read More
1994 - 1995 Corvette ZR-1: Characteristics of A.L. Dunn Cylinder Heads
Viewed 880 times since Thu, Jul 24, 2014
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
1994 - 1995 Corvette ZR-1: Wheel Touch-Up Paint
Viewed 590 times since Thu, Jul 24, 2014
The correct color code for the 1994 - 1995 Corvette ZR-1 5-spoke wheels is Dupont #C9201 or GM #WH9819. Read More
1995 Corvette: Recall: High Shift Effort Into Reverse Gear on Manual Transmission
Viewed 1186 times since Tue, Jul 29, 2014
Subject: Product Campaign - High Shift Effort Into Reverse Gear on Manual TransmissionModel and Year: 1995 Chevrolet CorvetteSource: Chevrolet Product CampaignBulletin Number: 95-C-16To: All Chevrolet/Geo DealersGeneral Motors has determined that... Read More
1995 Corvette: Service Bulletin: High Effort Shifting into Gears After Cold Soak
Viewed 580 times since Tue, Jul 29, 2014
Subject: High Effort Shifting into Gears After Cold Soak (Contact Technical Assistance) Model and Year: 1995 Chevrolet Corvette With 5.7L Engine (Vins J and P - RPOs LT5 and LT1) and 6-Speed Manual Transmission Source: Chevrolet Product... Read More
GM Press Release: November 7, 1996: Chevrolet LT5 Impala SS: Tim Allen’s Way of Saying ‘Get Me To The Show On Time’
Viewed 504 times since Thu, Aug 7, 2014
General Motors Media Press Release FOR RELEASE: November 7, 1996 CONTACT(S):  Chevrolet/Geo Communications Phone:  (800) CHEVY-MI or: (810) 492-8841 Fax: (810) 492-8853 Chevrolet LT5 Impala SS: Tim Allen's Way of Saying ‘Get Me To The... Read More