Hi all, wife came home with the 2000 convert check engine light on last night but all seems ok. The guages are all reading normal eveything works and the car runs normal, Whats up wit dis???Anyone run into this befor?

 

Have you checked the D.I.C for any codes that have been generated?
To do this press and hold the "OPTIONS" button then press the "FUEL" button FOUR times while holding the "OPTIONS" button down.
Have a pen and paper ready to write down any codes that come up.
Here's a link to see what the codes are:
http://www.c5forum.com/ayc/2000dtc.php

 

HOLY CRAP! Your wife was racing and missed a shift! Engine is dead! I will tow it off your property before the neghibors complain about JUNK on your property!

LMAO! read and post the DTCs,,,

READING YOUR Engine Diagnostic Trouble Codes (DTC)

This procedure should be carried out any time you experience a problem with your C5. Most inexpensive store bought aftermarket code readers will ONLY read power train DTC’s. Reading the DTC’s with the C5 built in code reader will allow you to read ALL the modules in the vehicle.

The Diagnostic Display Mode is entered with the following procedure:
1) Turn on the ignition but don't start the engine.
2) Press the RESET button to turn off any warning messages. (i.e. door open, trunk open ect)
3) Press and hold the OPTIONS button
4) While holding OPTIONS, press FUEL button four times within a 10 -second period.

Initially, the on-board diagnostics go into an Automatic Mode which will cycle through each module and shows diagnostic codes in a pre-set sequence: PCM - TCS - RTD - BCM - IPC - RADIO - HVAC - LDCM - RDCM - SCM - RFA. All codes will be displayed for each module. ( i.e. PCM = 4 codes) If none are present in a given module, you will see No More Codes on the display.

There are two types of diagnostic codes, Current and History designated with a letter suffix, “C” or “H”. A current code indicates a malfunction is present in the module displaying data. A history code indicates a problem existed sometime in the last 40 or 50 ignition cycles. When not accompanied by a current code of the same number, it's potential evidence of a previous problem, now resolved, that was not removed by clearing the codes. More likely it's an indication of an intermittent malfunction.

Intermittent codes are the most challenging of the diagnostics. An intermittent code may have happened once, may have happened more than once but is inconsistent or may be happening on a regular basis but not at the time the codes are displayed. History codes can also be caused by a current malfunction in a system that is not operating at the time codes are displayed. An example is the rear window defogger which doesn't operate until the Body Control Module detects engine rpm. For history codes set by a module that does not operate with the key on and engine off, a special diagnostic tool called a Scan Tester is necessary to properly diagnose the malfunction.

Once the system has displayed all modules, it goes into the manual mode which allows selection of each module using combinations of Driver Information Center buttons. Manual mode can also be entered during the automatic sequence by pressing any button except E/M. Once the display shows Manual Diagnostics, select a module by pressing the OPTIONS button to go forward or the TRIP button to go back. Once a module is selected, a code is displayed, and if more than one are present; press GAGES to go forward or FUEL to go back.
To exit the diagnostic mode at any time, press E/M. If you want to erase codes in a given module, press RESET To reset the codes once in manual mode, press and hold RESET until it displays NO CODES Press OPTIONS to go to the next module. Repeat the steps until you have reset the codes in all the computer modules.
NOTE!! Only reset the codes IF you want to - it is NOT necessary to do this. Clearing a code does not repair a problem. You are simply erasing the evidence of it in the module's memory. If you clear the code/s, and extinguish the Check Engine Light, your emissions status ready will NOT allow you to pass an emissions test until you have completed the required driving cycles. There are a few body module DTC’s that if set will prevent the module from operating properly. Once the DTC is cleared, the module will return to full function. This is not true for power train DTCs.

If you have never read and cleared your codes, there will probably be a lot of old history DTCs. It is recommended that you clear your codes and see if any come back during a driving cycle. Those are the ones that you need to concentrate on diagnosing.

Once you have the codes, the next question is: What to do with the information?
First, consult the factory service manual. Any serious C5 Do-It-Yourself owner should invest in the Corvette Service Manual of the appropriate model year. The Service Manual is really a requirement if you want to understand and work on your C5.

NOTE and a WARNING. You can read the DTCs while the engine is running. I pull mine up all the time while driving.
WARNING. Don’t become distracted while reading DTCs while your driving and cause an accident!!!!! Use common sense and drive safe.

These are some very good C5 Diagnostic Trouble Code (DTC) explanation web sites!!! They also explain how to read the DTCs

Here are some very good sites that explain what DTC mean:

http://www.gearchatter.com/viewtopic11755.php

http://www.obd-codes.com/trouble_cod...d-ii-codes.php

Make sure to include the H or C suffix when you post your DTCs!!



Please post the DTCs and we will be able to help!

Bill

 

Thanks guys, I went through the codes and saw one that was current for evaporative emission system small leak detected. P0442. cleared the codes and lamp is out. I also noticed the tire pressures arent reading and eventhough there is 3/4 of tank of gas its telling me my fuel range is low. Hmmm, I fear somethings amiss. I will monitor the findings and see what pops up next. Thanks much for the info fellas.

 

Run a couple of bottles of Chevron Techron Fuel System Cleaner and see if that solves the fuel gage isssue. Very common issue.

BC

 

P0442 is the classic loose gas cap code. It will return next time the Evap system is checked by the computer if you don't tighten the cap.

 

tightened cap and still getting P0442. I was told it may take about 100 miles of driving to go away. True or false?
Thanks.

 

I don't think your tire pressures will display in the DIC while the car is sitting still... And the fuel gauge problem is very common. I put a techron into my tank every time I change my oil in hopes of keeping that from happening. You could also try Sea Foam.

I don't know about the 100 mile cycle, but you should also check the small evap purge cap under the driver's side fuel rail cover... It's probably either green or brown. Turn it with your hand to make sure it's tight...

EDIT: Pic added, cap is circled in red below (look at the evap line right in front of the cowl.

 

You can clear the code thru the DIC!

 

He's already done that once so I'm assuming he's cleared the code again since tightening the gas cap...

 

If he clears it and the cap is tight he either has a bad cap of the EVAP system has a leak