Question about Chevrolet Cobalt

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I have a 2005 Chevy Cobalt base model 2.2L Auto. When I take off from a stop it will shift to second but not into 3rd or higher. We hooked a computer up and were able to manually shift into 3rd and 4th, so we replaced the TCM and had it reflashed at the dealer. Fluid level and quality is good. What could it be??

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I'm afraid that one needs to go to a transmission shop .

Posted on Feb 07, 2014


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Posted on Jan 02, 2017

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SOURCE: 2004 Chevy S10 PU.

My 2004 s10 is doing the same thing. How did u fix.yours

Posted on Apr 04, 2012

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SOURCE: 1993 Chevy Silverado 4x4 1500

If you have no overdrive at all, and virtually no third, then it's time for an overhaul. The 3-4 clutches have failed, a common problem in this trans since 1981. Yes, 1981. Your trans is a 4L60-E that is computer controlled. In 1981 it was called a THM700-R4, and was hydraulically controlled. The input clutch drum is basically the same as it was in 1981, and the 3-4 clutches are prone to failure, usually around 130,000 to 150,000 kms (75,000 to 90,000 miles).

Posted on Apr 18, 2011

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SOURCE: 2004 S10 106K miles.

If your fluid levels and fuses are OK, there are shift solenoids in the trans that can be seen with the pan off. Might be one of those; usually the 3/4 drum breaks in those its just the weak point for them.

Additionally, GM has a bulletion out for it. GM has redesigned a harder part to prevent it from happening again.To fix it the transmission woild have to come out and be rebuilt or replaced.

Here is the bulletion:
#00-07-30-022D: No Reverse, Second Gear or Fourth Gear (Replace Reaction Sun Shell with More Robust Heat Treated Parts) - (Jun 10, 2008)

Subject: No Reverse, Second Gear or Fourth Gear (Replace Reaction Sun Shell with More Robust Heat Treated Parts)

1993-2005 GM Passenger Cars and Light Duty Trucks
2003-2005 HUMMER H2
with 4L60/65-E Automatic Transmission (RPOs M30 or M32)

This bulletin is being revised to add 2005 model year to the parts information. Please discard Corporate Bulletin Number 00-07-30-022C (Section 07 -- Transmission/Transaxle).

Condition: Some customers may comment on a no reverse, no second or no fourth gear condition. First and third gears will operate properly.

Cause: The reaction sun gear (673) may not hold inside the reaction sun shell (670).

Check this with your dealer or technician.

Keep us updated.

Posted on Jun 12, 2011

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