What does SYS stand for on a corvette?

Have you noticed “SYS” intermittently showing up in your 1990-1996 Corvette’s speedometer display? This means there is a trouble code stored in one of the on-board control modules. When the 1990 Corvette debuted, GM introduced ECM (Engine Control Module) and CCM (Central Control Module) trouble codes.

What does the yellow light mean on a corvette?

After all, the light is yellow rather than red, which typically means “proceed with caution” unless the engine performance is so compromised your Corvette can’t proceed. If the Check Engine or SES warning light comes on, glance at the gauges.

Why is the SES light on on my 1997 corvette?

It took major problems for the 1981 Corvette Check Engine light to illuminate, while the 1997 would illuminate if the fuel cap was loose. Knowing the glitches that affect certain model year Corvettes helps diagnose the cause of the SES light illumination. After many years of repairing C4 Corvettes, a distinct pattern emerges.

What are the trouble codes on a 1996 Corvette?

In addition, ABS/ASR (Anti-lock Brake System/Acceleration Slip Regulation) and EBTCM (Electronic Brake Traction Control Module) trouble codes and data were introduced on the 1992-1996 Corvettes. Although limited ECM data is available, it can point you in the right direction.

Why is the SES light on on my 92 corvette?

We subsequently allow the ‘92 Corvette to heat soak for 30 minutes afterward and then go on a short 5-6 mile road test to see if the SES light illuminate; still no light. No reasons are found as to why the SES light came on previously.

What are the trouble codes for a corvette?

31 LCD data circuit shorted to battery or CCM internal open 33 Data clock circuit shorted to battery or CCM internal open circuit 35 Data strobe circuit shorted to battery or CCM internal open circuit 36 Data strobe circuit open or shorted to ground 37 M clock circuit shorted to battery or CCM internal open circuit

Where do I find the CCM code on my Corvette?

The CCM will display all module codes (sequentially) in the speedometer read-out area.

How to check your Chevy Corvette engine control?

Use Code: DIYSAVE10 Online Ship-to-Home Orders Only Few vehicles boast the level of style and performance offered by your Chevy Corvette. If you’re experiencing starting problems or your check engine light stays on persistently, check into your engine control module.

How to see the diagnostic codes on a corvette?

Turn the key to the ON position, but don’t start the engine. Clear any existing messages by pressing the RESET button. Hold the OPTIONS button down, and press the FUEL button 4 times. This will get you into the CODES section of the DIC. The computer will automatically display all the codes your car has created.

The CCM will display all module codes (sequentially) in the speedometer read-out area.

What are the diagnostic codes for a corvette?

72 LCD dimming output circuit open or shorted to ground 73 LED display dimming output circuit shorted to battery or CCM internal open circuit 74 LED display dimming output circuit open or shorted to ground 02 Dimming potentiometer (A/D) counts (see note A) 04 Rear defogger timer (seconds) (see note B)

What is the climate control panel on a C5 Corvette?

C5 Corvette Climate Control Panel Repair The air conditioning display on a C5 Corvette is known as a Climate Control Panel or Climate Control Module interchangeably. This module houses all the computerized control and operating software to carry out your automatic climate control functions.

Where can I find all the corvette specs?

That’s why we put together this page, a guide to finding all the Corvette specs you could ever need. Organized by generation and model year, you can dive into everything from engine specs and performance specs to weight and dimensions. Beyond that we also cover factory options, VIN numbers and much more.

What does SCS mean on a Corvette Z06?

Idles fine, SCS comes on, and the volt meter on the dash would read 12v. Turn on the heated seats/rear defroster/heater…and would see the voltage go down. 5 minutes later, the voltage would go to 14v and hold steady. SCS is gone. Thoughts? You guys think it could be the battery this time?

How does service charge system work on Corvette Z06?

Here’s the sequence. Clutch in, push the start button and nothing. Only clicking. Clutch in again, push the start button and the engine would turn over slowly. Idles fine, SCS comes on, and the volt meter on the dash would read 12v.

What kind of trouble does a 1993 Corvette have?

Any loose strands could short another terminal. 1990-1993 Corvettes use the first generation ALDL connector. It houses a fuel pump override lead that has battery voltage. This connector position can harm other ALDL circuits if battery voltage is inadvertently jumped to a control circuit.

Where is the ECM code on a 1994 Corvette?

1994-1996 Corvette ECM, CCM and ASR/EBTCM codes are accessed placing the jumper wire in ALDL connector positions 4 and 12. GM used numerals in place of alphas on all 1994 and up Corvettes at the ALDL. The ALDL numerals start with 1 in the upper left hand position and 9 in the lower left position.

Why is the a / C blinking ON MY 1992 Chevy?

Some owners of 1991-1992 C/K vehicles may comment that the A/C letters in the middle of the control head face are flashing. The HVAC control system used on 1991 and 1992 C/K vehicles incorporates a low A/C charge warning system.

Where are the ABS codes on a corvette?

Module 1 CCM (central control module) is first, followed by module 4 ECM (engine control module) and finishing with module 9 ABS/ASR EBTCM (anti-lock brake system/acceleration slip regulation/electronic brake traction control module) codes. 1990-1991 Corvette CCMs will not display any ABS/ASR or EBTCM codes.