1998 Chevrolet Silverado Z71 5.7 Vortec from North America
I own a 98 Silverado Z71 ext. cab, Bought it at 80,000 miles; it now has 231,000. Runs great, but starting to have issues.
Replaced fuel pump at 120k miles (still very noisy).
Rebuilt trans. at 154k.
Replaced water pump at 212k.
Just put new on ball joints and tires for the first time. That's all I've ever done to it, besides tune up and brake pads.
The issues I'm having now include loose steering, leaking radiator fluid for last year (can't find the leak), leaking oil about a quart every two to three weeks, and a snapping noise coming from underneath when the gears change, especially when slowing down then hitting the gas. U-joints are tight; not sure if it's rear end or trans., no winding or rattling noise, seems to shift fine. My air bag lights been on for 6 months.
It's been a great truck, and I plan on putting another 100k on it.
One more thing; how's every body getting 20 plus mpg? I only get 17mpg highway, and watch my gas gauge drop in town driving.
Anyone with any answers can e-mail me at email@example.com. Would greatly be appreciated.
Would you buy another car from this manufacturer? Don't Know
Review Date: 2nd October, 2010
9th Aug 2011, 19:06
Loose steering may be your idler arm worn out, it's on the passenger side; get under the truck and push up on the drag link to see if it moves, it shouldn't.
The coolant leak is probably at the rear of intake with that many miles, and the intake gaskets being old could also account for the oil loss if it's being sucked down the intake runners.
I just replaced a set that was doing both, leaking a little coolant at the rear, and when I pulled the intake, I could see where oil had been getting pulled up into the # 2 and 4 intake
runners out of the valley.
Also found 2 split fuel injector lines going to #8 and#5 cylinders.
Hope this helps, Tim.