Thread: Adding Performance Shift [*]

Originally Posted by Alpha388th

where is your write up of how to hook it all up maybe i can find something not hooked up right...

It is on the first page of this thread. It is marked HERE as a blue hyperlink. But for good measure......Here is the link for ya.

http://grandprixforums.net/perf_shift.php

This should get you where you need to go. If your PERFORMANCE SHIFT light is ON all the time in the DIC (Driver Information Console) then that more than likely means someone programed it to stay on fulltime more than likely. If you the follow the wiring diagram I provided plus the PCM tuning instructions, you will be able to turn it on and off.

I think it is best to have your stock settings for the tranny available when you want and then to have your higher performing shift settings available when you click the PS button to activate it. Personally I would not worry about the dash PS light. If your dash actually has that option available, more than likely you have a 97 model GP. 98-03 have the PERFORMANCE SHIFT only in the DIC from what I do remember of them. There is a good chance either bulb is burnt out on the dash console, thus it not lighting up, or the PERFORMANCE SHIFT indicator has been wired in some way to show it constantly actived.

The only way to be sure is to have someone with a scanner check your PCM transmission settings to truly determine if that has been done or not.

Originally Posted by GeddyLee

It is on the first page of this thread. It is marked HERE as a blue hyperlink. But for good measure......Here is the link for ya.

http://grandprixforums.net/perf_shift.php

Thanks

Originally Posted by GeddyLee

If your dash actually has that option available, more than likely you have a 97 model GP. 98-03 have the PERFORMANCE SHIFT only in the DIC from what I do remember of them. There is a good chance either bulb is burnt out on the dash console, thus it not lighting up, or the PERFORMANCE SHIFT indicator has been wired in some way to show it constantly actived.

Im Pretty Sure its a 99 thats what the Title Says also its lit up all the time in the DIC and then the other one in the dash over the fuel gauge i can turn it on and off with the switch on the shift knob. But Im Pretty sure that when ever i turn it on or off there is no change so i dont think it works. The PCM has been changed so ill have to find somebody to help me with it. Also my Check Engine is still on saying the code P1336 (Crankshaft Position System Variation Learn) So ill have to get thoughs both fixed at the same time.

Originally Posted by Alpha388th

Im Pretty Sure its a 99 thats what the Title Says also its lit up all the time in the DIC and then the other one in the dash over the fuel gauge i can turn it on and off with the switch on the shift knob. But Im Pretty sure that when ever i turn it on or off there is no change so i dont think it works. The PCM has been changed so ill have to find somebody to help me with it. Also my Check Engine is still on saying the code P1336 (Crankshaft Position System Variation Learn) So ill have to get thoughs both fixed at the same time.

Here is some information on your P1336 Code.

CKP Variation Learn:
Eliminate False Misfire DTC'sDrivability technicians have experienced learn and relearn procedures for years. The Crankshaft Position Variation Learn Procedure — concerning the relationship of the Crankshaft Position sensor or CKP to the crankshaft reluctor — was introduced in 1997 and has been used more broadly since 1998.

DTC P1336 indicates that CKP System Variation is not learned. This learn procedure is needed to compensate for minor variations in manufacturing tolerances that might alter the relationship of the crankshaft position sensor to the reluctor wheel, possibly resulting in a false misfire DTC and MIL illumination.
CKP positions must be relearned when any of these parts are removed or replaced:

• CKP sensor
• Front cover or bracket holding the crankshaft position sensor
• Target wheel (reluctor)
• Crankshaft
• Engine block
• Engine assembly
• PCM

The crankshaft position system variation learning feature is used to calculate reference period errors caused by slight tolerance variations in the crankshaft, the crankshaft balancer interrupter rings, and the crankshaft position sensor Hall Effect switches. The calculated error allows the PCM to accurately compensate for reference period variations. The crankshaft position system variation learning feature enhances the ability of the PCM to detect misfire events over a wider range of engine speed and load.
The crankshaft position system variation values are stored in the PCM non-volatile memory after the crankshaft position system variation learn procedure has been performed. DTC P1336 set indicates that the crankshaft position system variation values have not been stored in the PCM and the crankshaft position system variation learn procedure must be performed. The learn procedure is required after the following service procedures have been performed, regardless of whether or not DTC P1336 is set:

• PCM replacement
• Engine replacement
• Crankshaft replacement
• Crankshaft balancer replacement
• Crankshaft position sensor replacement
• Any engine repair(s) which disturbs the crankshaft/harmonic balancer to crankshaft position sensor relationship

Conditions for Running the DTC

• No CMP or CKP sensor DTC(s) set.
• Coolant temp greater than 70º C.

Conditions for Setting the DTC

• Crankshaft position system variation values are not stored in the PCM memory.

Action Taken When the DTC Sets

• The PCM will illuminate the MIL during the first trip in which the diagnostic test has been run and failed.
• The PCM will store conditions which are present when the DTC sets as Freeze Frame and Fail Records data.

Conditions for Clearing the MIL/DTC

• The PCM will turn the MIL “OFF” during the third consecutive trip in which the diagnostic has been run and passed.
• The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
• The DTC can be cleared by using the Scan Tool Clear Info function or by disconnecting the PCM battery feed on some models.

If a PCM is swapped from one vehicle into another, the CKP position variation must be relearned also (unless the PCM will be returned to the original vehicle). If a PCM is swapped without a CKP learn, the P1336 will not set and it is possible that a misfire DTC in the P0300 group might later set falsely. This is due to an incorrect CKP position value being stored in the PCM and being used in misfire calculation.
CKP variation is only relearned with a scan tool. It does not relearn “by itself.”

1. Make sure no DTCs are set. If DTCs
   are set, service them before performing the procedure.
2. The service brake must be firmly applied and the transmission in Park for an automatic or Neutral for a manual.
3. A/C must be “OFF” and the hood closed.
4. At this point, use the scan tool and select CASE Learn:
5. Open the accelerator to the CASE fuel cutoff speed and release it as soon as the PCM cuts off the fuel and the engine begins to decelerate.
6. The scan tool will identify when the procedure is complete.

nice thanks