I've had my Denali for about six weeks and found out about four weeks ago that the rear windshield washer hose was chewed and cracked where it curls around the wiper arm pivot. GM, in its quest for profits, does not stock the hose but will sell me an entire rear wiper arm with hose for $45.00+/-. Dorman has one for $35.00+/-. To replace $1.00 worth of hose!
So I went out and cut the hose at a non-chewed spot and measured the ID and OD of the OEM hose (3mm and 5mm respectively) and started searching. I found plenty of 50 ft reels at $10 less than the cost of a new wiper arm, but couldn't find anyone selling a short piece. I thought I had found a place that would sell me a piece for about $8 but when I went to check out they wanted $45.00 for shipping! And they were not in Antarctica! I looked at O'Reilly's website sort of as a last resort (I have about $20 left on a gift card from them) and they had it for $0.49 per foot! Score!
So today I'll pull the old hose, replace it, and be able to see out the back window when it gets dirty.