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uweschroeder4

Corsa Gear Shift Problems

Corsa 2001 diesel here. Gear shift indicator's gone bonkers. Can't engage gears, transmission slips, grinding noises, error light's on, and the gear selection display is dead. Seems sensor-related. Anyone seen this?

Summary of the thread

A 2001 Corsa diesel is experiencing gear shift problems, including inability to engage gears, transmission slipping, grinding noises, and a dead gear selection display. These issues, along with error codes pointing to control unit problems, suggest a faulty transmission control module (TCM). The solution involves replacing the TCM, which was confirmed by a workshop and subsequently fixed.

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4 comment(s)

robertcrystal16

Sounds nasty. The symptoms indicate more than just a simple sensor glitch. When you say 'slips', is it happening across all gears, or just specific ones? Have you tried pulling any diagnostic codes? An OBDII scanner might give you a better idea of where the issue is originating. Could be the transmission control module (TCM) failing, or a wiring harness issue. Any recent work done on the car before this started?

uweschroeder4 (community.author)

Slips in all gears. I did pull the codes; points to control unit issues. Wiring harness seems ok after a quick check. TCM – is that likely given the display's dead too?

robertcrystal16

Yeah, the dead display really points towards a central control issue. Given it's affecting both the gear engagement and the display, and the codes are suggesting it, a faulty TCM is a prime suspect. The fact that it's slipping across all gears makes it even more probable. Unfortunately, diagnosing a TCM definitively often requires specialized equipment. Based on what you've described, I'd say a trip to a trusted workshop is in order; they can run deeper diagnostics. Just brace yourself; replacement and programming of a new TCM for these older models can be pricey, around 1000€.

uweschroeder4 (community.author)

Cheers. Workshop confirmed it's the TCM. Quoted 1000€, as you guessed. Bit the bullet and got it fixed.

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VAUXHALL

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CORSA