What is the C4 trouble code for a corvette?

Code #21: Throttle Position Sensor High. Code #22: Throttle Position Sensor Low. Code #23: Manifold Air Temperature Circuit High. Code #24: Vehicle Speed Sensor. Code #25: Manifold Air Temperature Circuit Low.

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.

What’s the problem with my 1989 Corvette Vette?

No noticeable performance issues, the light just comes on, it … The top on my 1989 Vette won’t release when I pull the release handle. It comes open on the passenger side but not the driver’s side. What can I do?

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.

Why is the check valve on my Corvette not working?

Once vacuum is applied the diaphragm should rise, holding vacuum until the engine is started, then the valve should purge the vacuum and the valve will close. If the valve should fail to rise during vacuum application, the valve has an open check valve or broken diaphragm.

What kind of vacuum does a 1984 Corvette use?

Some used manifold vacuum like the 1984 and 1992-1996 Corvette opening the EGR valve with a NC solenoid. The 1985-1989 Corvettes used ported vacuum supplying vacuum once the throttle was opened through a NO vacuum control valve solenoid. The ECM controlled either the NO or NC solenoid which has ignition power as long as the engine is running.

How to troubleshoot a vacuum in a Corvette Stingray?

Or you can do a step-by-step check by starting at the intake manifold and testing each component in the system beginning with the filter, then the check valve, then the headlight switch, etc. Notice that once you reach the check valve, there is another path for the vacuum where it goes to the reservoir for the operating subsystem.

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

What’s the best way to troubleshoot a corvette?

A scan tool is generally the best way to troubleshoot engine problems and with the 1994 and later Corvette, it is virtually mandatory. (An oscilloscope will also work on the AC/Delco MAF but a regular test meter will not).

Is there a problem with my 1985 C4 Corvette?

No dash lights, no radio, nothing. It was running fine, no issues at all when it was parked in garage. The battery … I replaced all the rubbers on my 1985 c4 and now when it rains heavy I get water dripping from both sides of the edge of the dashboard padthe water hits …

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.