Last post on Oct 08, 2008 at 6:55 AM
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Chevrolet Blazer, Electrical, Truck
#6 of 10 Re: cruise control not working after replacing master combo switch assembly [catlover11381]
Jul 19, 2006 (2:14 pm)
Since when is this a Blazer - anyway he pulled the harness from the column so think its on him to correct - gee worked before but not after - have a discussion with the manager - also the brake pedal has a shutoff switch/brake light switch that may be involved/bad/disconnected - seen them activate the brake lights but were adjusted so far out that they deactivated the cruise. Check all fuses and all the connectors too. No light = no activation
#7 of 10 Silverado Cruise Control
Feb 20, 2007 (6:34 pm)
My cruise control works during the daytime, but when the lights come on (other than daylight driving lights) or I manually turn them on, my cruise control quits working in less than a minute. Cannot set the cruise control while lights are on. As soon as I turn the lights off, cruise will work again. Any ideas?
#8 of 10 Re: Silverado Cruise Control [gundoctor]
Feb 20, 2007 (6:38 pm)
Would look at a voltage drop in the circuit probably in the multifunction switch - look at the wiring in the column as the hi/low beam is in the MFS.
#9 of 10 cruise control and fuel efficiency
Oct 06, 2008 (4:35 pm)
The conventional wisdom that the use of cruise control helps improve fuel economy, by evening out the accelerations and decelerations involved in usual driving practices, has a flaw. I notice that using this feature on roads with varying terrains, including many hills, results in my RPM's increasing sharply as my vehicle ascends these hills. I believe these sudden sharp increases in my engine's output negates many benefits to fuel economy of keeping the cruise control set. Your comments, please.
#10 of 10 Re: cruise control and fuel efficiency [jmosby1469]
Oct 08, 2008 (6:55 am)
You are correct. Cruise control is not effective for fuel economy in rolling terrain as it cannot "look ahead" and compensate. Nor can it "average" such as letting the car gain a few MPH leading up to a hill, or drop a few extra MPH while approaching the crown of a hill.