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Transmission issue

Old 11-05-2019, 07:03 AM
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Default Transmission issue

2012 GMC 1/2 ton with 6.2L owned by my son. When the transmission goes to shift it does not engage the next gear at times and just revs up. He was able to limp to a shop in tow haul mode. What are the possible causes for this? Torque converter or transmission?
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Old 11-05-2019, 07:12 AM
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Shift solenoid or wiring open to shift solenoid my guess
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Old 11-05-2019, 07:13 AM
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Has he or did he pull the dipstick and check the fluid? If so what was it's color, and what did it smell like..
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Old 11-05-2019, 07:58 AM
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6 speed? There's 4 rubber plugs which connect a drum to the housing. I'm a test truck for an upgrade which prevents the drum from moving in the tranny housing. Fixed my cold shift/harsh shift issues.
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Old 11-05-2019, 02:17 PM
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Trans is shot. I'll put money on it. I havent had a chevy come in here that is 2010 or newer tha when it starts slipping the trans is blown. Drop the pan and you'll find chunks of metal.
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Old 11-05-2019, 05:12 PM
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Originally Posted by simeoncoleman View Post
Trans is shot. I'll put money on it. I havent had a chevy come in here that is 2010 or newer tha when it starts slipping the trans is blown. Drop the pan and you'll find chunks of metal.
That is the diagnosis. $4700 at dealer with 3 year warranty or independent rebuilt at $3700 and 2 years. He can't afford either. We will help him out.
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