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Re: 91 Suburban Cruise control question
As far as I know, there is no correlation between the speedometer and cruise control. Cruise should be it's own self-contained unit. My '90 speedometer didn't even work half the time. It had a bad ground internally, but the cruise always worked. I'd check all your vacuum lines and stuff. I've had GMs that the cruise would drop 2-5 mph before it caught after you set it, but never 12.
-cal30sniper
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86 Chevrolet K20/30 Suburban - 8.1/NV4500/NP205/Dana 60/14 bolt FF, build in progress
73 Formula - 400/Doug Nash 4+1, resto on hold
86 Chevrolet K30 3+3 - 350/TH400/NP241, Air Force/Forest Service Rescue Truck, for sale
01 Ram 2500 - 5.9L Magnum, daily driver
91 BMW 325i - Chumpcar series racecar
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