Speedo/ cruise

[maxrevs85]

A friend of mine has a 79 L82 . The speedo and cruise are not functioning. all are connected and have power. Is it one of the cables or transducer? The speedo was working but niether are now.
Thanks,
Dave

 

[gmjunkie]

Probably the Long cable from Transmission!! I've put 2 on my 78 in 29 years!!

 

[srs244]

if you can get the rear wheels off the ground, take the long cable off the transducer and see if it is spinning when in gear. if not, could be the cable or the speedometer gear being stripped. if it is turning, you might want to disconnect the short cable (from the transducer to the speedometer) and replace it with an old cable to see if turns. more likely than not, it's between the speedometer and trans, and not the speedometer itself.

 

[maxrevs85]

Thanks for the help. we'll track it down this weekend.
Thanks again
Dave.