Why can't I get transmission to shift up out of low on it's own, or manually??

Asked by Neon_1581 Jul 19, 2014 at 05:59 AM about the 1991 GMC Sierra 1500 C1500 SLE Standard Cab LB

Question type: Maintenance & Repair

1991 GMC 2wd 1500 5.7 4l60e transmission: trans. won't shift up out of 1st to 2nd or any
other gear on it's own or even when i manually try to shift to 2nd or any other gear. It
freewheels exactly like it's got a stall converter. It pulls normally until i try to shift up?
Vacuum problem or possible solenoid (s)??? Thank you for anything you can help me
with!!!

3 Answers
365

Albert answered 10 years ago

Check the converter sound more like a solenoid

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George answered 5 years ago

Ignition switch. I spent so much time trying to figure out what does it could be because the switch is $98.00. It was the switch. First check if the little orange indicator (prnd) is lit. If it is NOT lot it is definitely your switch. Trust me!

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