1989 GMC Sierra SLE from North America - Comments

16th Jul 2007, 17:07

"Civic Killer"

What things have gone wrong with the car?

Nothing has gone wrong with this truck yet. rust issues as I knew when I bought the truck. I put a new air filter in it, new spark plugs/wires, brakes, brake lines and tires. most of this is because the truck sat for 6 months with a load of gravel in the back from previous owner. Odometer broke at 162000 so I'm guessing my mileage. turn signal/wiper arm snapped off.

I took the truck in for a tune up (spark plugs/wires look at tranny because 1st gear was holding a little too long) and I still get a up and down idle and it is most noticeable when it has been cold then started again I need help!!! my mechanic keeps looking at it last time he added a stove pipe to my intake, but it still persists! I want to know if this is normal for the old 350's. and does flipping the air filter cover actually increase (good) or decrease (bad) gas mileage?

General comments?

I LOVE my truck, thinking of adding a 2" cowl induction hood, anyone have any comments, good bad or indifferent? handling's not too bad for struts, and the rear end is LIGHT because of the fiberglass fenders.. awesome.


23rd Oct 2008, 14:06

Man, I have a single cab short wheel base 1988 Sierra, and it has pretty decent gas mileage. I have my breather cover flipped over, and it seems to get better gas mileage. At first it didn't but over time after the computer sets in, it does to my knowledge.

You wouldn't happen to know of any one lookin to buy one would ya?


8th Feb 2009, 09:28

Flipping the air cleaner lid does nothing at all.

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