afroman006
1/2 ton status
My burban has it but it doesnt work. I figure for the 4 hour drive to college it would be nice to have. Thx
CK5
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What are common failure points for cruise control?
- Thread starter afroman006
- Start date
big83chevy4x4
3/4 ton status
have had the rivets break/rust though that hold the rod on
the vacuum lines leak/missing
controls not hooked up
the vacuum lines leak/missing
controls not hooked up
what brike on mine was the cruise control servo, its a round black rubber disk that works off of vacum, there is a linkage on the driver side of the engine that runs from it (on the firewall) to the TPI, my linkage broke, but the rubber also has a tendancy to dry rot, rip, whatever that wont hold air.
There is a pretty simple procedure for troubleshooting the electric cruise control setup in teh service manuals.
I believe at one time I wrote it up, but it's probably been so long it no longer exists if you search. Hmm, so I guess I was lazy:
Cruise troubleshooting chart
But that's only for the electrical, not the mechanical stuff.
I believe at one time I wrote it up, but it's probably been so long it no longer exists if you search. Hmm, so I guess I was lazy:
Cruise troubleshooting chart
But that's only for the electrical, not the mechanical stuff.
txfiremank5
1/2 ton status
I'd say the most common is vacuum line leaks. Any time it's stopped working on either mine, or a friends vehicle, that was the problem. Check that first, and go from there.
Thunder
3/4 ton status
Here's sum stuff to check.
Check fuse
Check for vacume leaks/bad vacume lines
Make sure wireing is good. If your cruise is operated from the blinker switch,it is a common problem that the wires to it may be broken or shorted
There is a vacume switch on the brake pedal that turns off the cruise when you hit the brakes. Make sure it is operating properly and not leaking vacume.
Bad throttle control diaphram/servo
Bad cruise control module. This is a black box under the dash above the brake pedal.
Check fuse
Check for vacume leaks/bad vacume lines
Make sure wireing is good. If your cruise is operated from the blinker switch,it is a common problem that the wires to it may be broken or shorted
There is a vacume switch on the brake pedal that turns off the cruise when you hit the brakes. Make sure it is operating properly and not leaking vacume.
Bad throttle control diaphram/servo
Bad cruise control module. This is a black box under the dash above the brake pedal.
