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1999 GMC Sierra 1500 SL 5.3L 4WD/2WD
Posted to GM PowerTrain on 3/30/2004 3 Replies

CODE 387 unable to complete shift.

When trying to shift from 2wd to 4wd, the light blinks on 4wd and remains in 2wd. After trying for a bit, eventually the shift is made and 4wd lite stays lit and truck is in 4wd. In other words I push the 4wd button after ea...

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  Related Documents & Media  1999 GMC Sierra 1500 SL

 
Message Closed w/FIX

car Vehicle Data

1999 GMC Sierra 1500 SL

VIN 2GTEK19T5X
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
Affected4WD/2WD
Conditions4WD/2WD
Message Closed w/FIX

car Vehicle Data

1999 GMC Sierra 1500 SL

VIN 2GTEK19T5X
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
Affected4WD/2WD
Conditions4WD/2WD