PIP: MU3 Manual Transmission Hard Shifting

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Service Information
2009 Chevrolet Cobalt | Cobalt, G5 (VIN A) Service Manual | Preliminary Information | Document ID: 2273389
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#PIP4638: Dificult To Shift Or Unable To Select All Gears - keywords shifter - (May 6, 2009)


Subject: Difficult To Shift Or Unable To Select All Gears


Models: 2008-2010 Chevrolet Cobalt SS, HHR SS

Equipped With RPO MU3 Manual Transmission




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The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
Customers may comment that the transmission is difficult to shift and or it cannot be shifted into all gears. This condition may be caused by a locator pin left in place (see photo below) that was meant to be removed at the assembly plant or a shift cable out of position.

Recommendation/Instructions:
Inspect the transmission and shift linkage if the locator pin is still in place remove the pin and discard, retest transmission operation. If the pin is not found in position inspect the shift cables for being properly seated in the cable bracket, if the cables are out of the bracket reseat the cable or cables and test operation. If neither of the above conditions are found follow SI to properly diagnose the transmission shifting concern. Also reference the latest version of PIC4992 to aid in hard to shift concerns.





Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

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