ZR-1 Maintenance Tips

General Maintenance

by Jim VanDorn

 

The most common call we receive by far is from a confused ZR1 owner. After years of reading everything from which thermostat to use, to what type of spark plug is best, the average owner is totally and completely confused...and for good reason. There are many varied opinions of what is best for our cars but that may depend greatly on how you use your ZR1.

 

After seven years plus, many ZR1's are finally accruing some mileage. We have had the opportunity to closely inspect many engines with a variety of types of use from normal street driving to severe "weekend" use (track time). Compiling this information we can now offer the ZR1 owner some observations. One rule we've adopted after hearing so many owners say the same thing is the "DIMWIT" or "Darn, if I didn't Mess With IT" rule. In other words, if you didn't have a problem, then what are your intentions in the first place? To date, the only company known to have a fleet of engineering ZR1's to test with was GM and it's affiliates.

 

Therefore, we must ask ourselves if their suggested procedures and parts recommendations should have a considerable amount of merit. Obviously they do, but on the other hand, there are no doubt areas for improvement. Although we will begin our segment discussing the routine and normal maintenance of the ZR1, there are many areas where an upgrade will be suggested.

 

Please understand that these are personal opinions and experiences and are not intended to conflict with service procedures outlined in the appropriate service manual.


  Articles

Body

Information on the auxiliary power supply hidden under the center console.

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Information and troubleshooting the air conditioning system.

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Information regarding issues with the radio antenna.

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Repairing the radio antenna

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Posted in: Body, Electrical
How to tackle a broken bolt or nut.

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Door Ajar Problem
How to fix the Door Ajar problem.

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Posted in: Body, Electrical
How to replace the headlight motor bushings.

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Posted in: Body
Headlight motor gearbox fix
How to rebuild the headlight motor gearbox.

[Read more...]

Posted in: Body, Lights
How to: Jack up a ZR-1

How to: jack-up a ZR-1.

[Read more...]

Describes the functioning and cure for the Inflatable Restraint Light (INFL Rest) Light.

[Read more...]

Intermittent Door Chime
Possible source and fix for an intermittent door chime.

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Posted in: Body, Doors
How to lift/jack-up the ZR-1

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How to fix problems with the lumbar support.

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Posted in: Body, Seats
Reduce noise coming from the hood
Clamshell hood modifications to reduce noise

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Posted in: Body
Describes issues with the ZR-1 seats.

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Side Window Ribbon Replacement (for 85 only)
Symptoms: The side window would not go all the way up, caused by a break in the window 'ribbon'. Note: while this is for an 85 it will pr...

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Posted in: Body, Glass, Doors
Information on the Targa top and discussions of known issues.

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Testing and fixing the vacuum pump.

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Posted in: Body, Seats
Describes the ZR-1 windshield and issues that may arise.

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How to cure the rear hatch glass shifting in early ZR-1s.

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Posted in: Body, Glass
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