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  #1  
Old 09-30-2009, 11:27 AM
jannap jannap is offline
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1978 chev (auto trans) wont shift into second gear

I just bought this truck. It sounds like its going to shift, but wont. What can I do?
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Old 09-30-2009, 03:22 PM
j cAT j cAT is offline
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Re: 1978 chev (auto trans) wont shift into second gear

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Originally Posted by jannap View Post
I just bought this truck. It sounds like its going to shift, but wont. What can I do?
I had a 73 with this problem it was the shift cable stuck,,check the carb transmission cable for issues...
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Old 09-30-2009, 06:21 PM
777stickman 777stickman is offline
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Re: 1978 chev (auto trans) wont shift into second gear

Also check the vacuum line to the modulator located at the right rear of the tranny and at the rear of the intake manifold.
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Old 10-06-2009, 10:24 PM
cramer_77 cramer_77 is offline
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Re: 1978 chev (auto trans) wont shift into second gear

cheap insurance replace your modulator that is mentioned in the above post got a 77 c-10 it went bad and ended up ruining second gear.
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Old 10-07-2009, 09:22 AM
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MT-2500 MT-2500 is offline
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Re: 1978 chev (auto trans) wont shift into second gear

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Originally Posted by jannap View Post
I just bought this truck. It sounds like its going to shift, but wont. What can I do?
What transmission?

Things to check.
Fluid level and condition of fluid and filter?
TV cabel?
Vacuum and vacuum modjulator valve?
Also a striped governor will cause a no upshift?
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Old 10-07-2009, 06:51 PM
Jeremy-WI Jeremy-WI is offline
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Re: 1978 chev (auto trans) wont shift into second gear

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Originally Posted by MT-2500 View Post
What transmission?

Things to check.
Fluid level and condition of fluid and filter?
TV cabel?
Vacuum and vacuum modjulator valve?
Also a striped governor will cause a no upshift?
I'd like to see the governor of Wisconsin in stripes

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