Quote:
Originally Posted by fritcr
Oh sorry...this is cruising 70mph on a double lane road. That's the only time I use the cruise. I could not use it on any other road around here. (most are gravel YECH). Anyway, no the truck don't even downshift it just seems to surge several times after topping a crest in the road...really any crest when the cruise would "let off the gas" the truck will surge a few times before settling down.
Rob
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something is defective . the description you describe could be a number of things ...check the spark plugs/wires ..measure the resistance of wires ..
check the fuel pressures...the transmission may/should down shift if at that speed if the hills are very steep ,, the tranny fluid/ filter may need replacing and since you operate in hilly country this fluid needs more frequent replacing...I would use synthetic mobil or the new dexronVI synthetic as this fluid is now the GM replacement fluid . Dexron III was droped because of high failures in GM transmissions...