73-87 Chevy _ GMC Trucks > Instrumentation

77 C10 Custom Deluxe Cluster Removal

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MIKE S:
You can also disconnect the speedo cable at the transmission and remove any hold down clamps that attach the cable to the body an push the cable thru the firewall grommet to push the cluster from the dash to give more clearance to disconnect the cable at the speedo. You can also do the same to the oil line at the engine and carefully guide it thru the firewall.

ehjorten:

--- Quote from: bd on March 31, 2024, 11:45:39 pm ---This ^^^^^.  If the truck has A/C, remove the driver-side A/C duct that crosses under the steering column.  With the instrument cluster firmly secured in the dash, while kneeling on the floor use your left hand to reach up behind the cluster from below and wrap your fingers around the cable with your thumb pointing toward the speedometer head.  Remove the cable from the speedometer by pushing the spring retaining tab toward the cluster with your left thumb while simultaneously pulling the cable away from the cluster with your left hand.
--- End quote ---

I did this exact same procedure on my '77 K20 Silverado. Getting it free after 46 years wasn't too bad. Bought a new cable, pulled the cable out of the sleeve and coated it with white lithium grease, but it back in, and transferred the original, aluminum strain relief from at the transfer case to the new cable. I also installed a thermal cover over the sleeve where it crosses over the aftermarket exhaust pipe to prevent it from melting again.

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