WSsick

iTrader: (13)

so, basically my gauges reset everytime i shift, and go back to where they should. i just installed a new alternator last night so i dont know if its caused by the battery having very little charge. just asking to see what this could be, if the alternator isnt the fix.

any help?

wssix99

iTrader: (5)

Did it happen before the alternator change? Maybe your "new" alternator is not a good one?

WSsick

iTrader: (13)

yeah it happened before the change, which is why i changed it. also, it will drive fine, then be too dead to start if i try to start within an hour or so, but the next day it has enough juice to run again. its driving me crazy!

Michael02hawk

iTrader: (26)

Sounds like the 1999 model year issue with the PCM.

do a search, becuase i'm not sure what is all invloved with the fix.

wssix99

iTrader: (5)

How is your belt? Does the gauge on the belt tensioner read that its the right length?

If the belt is good, you may have a problem with your exciter wire. (I honestly don't know much about this wire or how it works, but recall that people with similar issues have needed to replace it.)

WSsick

iTrader: (13)

hmm ill have to check both of those. thanks for the input.

Viper

iTrader: (6)

Michael02Hawk

Can you elaborate? I tried a search, no luck

momartin22

iTrader: (2)

its typical for '99's, but ithink its usually trans ams.....anyways mine did this and all the gauges would sweep and then trip would reset. I replaced my battery and problem was solved.

Michael02hawk

iTrader: (26)

TSB issue is with the camaro line, not the birds. As far as I can tell, the fbody 1999 chevy model year has glitch in either an eeprom or the PCM revisision, maybe both. Dealer can fix it, might be able to yourself.

Search ls1tech here for:
TSB gauge sweep

...and read away.

9911UZ28

iTrader: (4)

Trip Odometer Resets to Zero
(Exchange/Install Instrument Cluster)
# 99-08-49-009

Trip Odometer Resets To Zero
(Exchange/Install Instrument Cluster)

1999 Chevrolet Camaro
1999 Pontiac Firebird

Condition

Some customers may comment that the trip odometer resets to zero when starting the engine.

Cause

Ambient temperatures below 0°C (32°F), combined with low battery voltage, may cause the trip odometer memory to be erased when starting the vehicle.

Correction

To identify the instrument panel cluster part number, use the following procedure:

1. Install Tech 2 and from the main menu screen select F0: Diagnostics, press enter:

2. Select 1999, press enter,

3. Select Passenger Car, press enter.

4. Select F1: Body, press enter.

5. Select F, press enter.

6. Select the Proper nameplate, press enter.

7. Select the engine, press enter.

8. Select F1: Instrument Panel Cluster, press enter.

9. Select F1: Data Display, press enter.

10. Select F0: Module Info. press enter.


The Tech 2 will now display the instrument panel cluster part number. If the part number is shown in the table as the old part number, install a new part number exchange cluster which has had the new circuit board with the non-volatile memory chip installed. Order the cluster from your A/C Delco(R) Service Center. DO NOT ORDER A CLUSTER FROM GMSPO.