I have a 99 calais automatic, currently stuck in second gear, speedo not working & no codes coming up.
Firstly we serviced & replaced all transmission solenoids, replaced speed sensor, new alternator and still nothing changed. Any ideas? Mechanic now ordered another instrument cluster as he thinks it could be one of the computer/electrical things in behind there. Any suggestions very much welcomed.
that's the way, just throw parts at it
when you say auto stuck in second, do you literally mean stuck in second,
or park/nuetral work fine and car will only change up to second when you are driving
how are you determining that you have no fault codes
if you use instrument diagnostics
with key off
Hold mode and up then key on to red lights or start if you want
then release mode and up buttons
Press Mode = Dash Part Number - e.g. 1731
Press Mode = Mode Switch Voltage - e.g. BV - - - 5.0
Press Mode = Battery Voltage - e.g. V 11.8
Press Mode = Petrol Sender Voltage - e.g. FUEL 02.6
Press Mode = LPG Sender Voltage - e.g. VL 5.0
Press Mode = Remaining Fuel - e.g. 38L
Press Mode = Instantaneous Fuel (Liters per Hour) - e.g. 12.8 L/H
Press Mode = Engine Coolant Temp - e.g. 63 C
Press Mode = Vehicle Speed - e.g. 45 KM/H
Press Mode = Tachometer - e.g. 2380
Press Mode = Park Lamps Switch - e.g. P OFF
Press Mode = Dash Trouble Codes - e.g. t 00 (Press up/down to scroll through any codes, these are not PCM, ABS, etc codes)
Press Mode = Dash Test - All gauges will move, lights will come on and buzzer will sound.
a faulty speedo sensor (fault 24) will cause car to go into limp mode and not let car go any higher than second gear
still sounds like you need a new speedo sensor or repair wiring between speed sensor and pcm