A rubber timing belt is utilized while in the 1.6L E-TECH II engine in 2004 and up Chevrolet Aveo. The engine is actually a twin overhead cam style by using a single timing belt within the front. The layout is fairly traditional, having an idler pulley, and a tensioner retaining the belt in place, along with a belt-driven water pump around the front of your block. The timing belt is hidden beneath a two-piece cover.

The factory recommended “inspection” interval for that timing belt on this distinct engine is 30,000 miles, plus the advisable replacement interval is 60,000 miles.

Several motorists are unaware of those recommendations and normally do nothing at all until finally the timing belt fails — which is lousy news as the 1.6L E-TECH II engine is definitely an interference engine. If the timing belt breaks, one or even more valves will hit the pistons and damage the engine. The repair may perhaps call for replacing one or more valves, potentially a piston or two, and maybe even the entire cylinder head. The repair bill can effortlessly complete $1,600 to $2,000 for parts and labor.


A few of the OEM timing belts on these engines haven’t even produced it to the 60,000 mile mark. There are already various reviews of timing belts failing at 40,000 to 50,000 miles.

In October, 2006, Common Motors issued a technical service bulletin (TSB 06-06-01-021) offering motorists a cost-free “goodwill” replacement timing belt (parts only, labor not integrated) for autos with 30,000 to 55,000 miles on the odometer that however possess the unique timing belt. GM explained they wanted to examine the authentic belts for possible defects. The free belt present is to get a limited time only, and doesn’t apply to cars with a lot more than 55,000 miles to the original belt. GM says it’s the vehicle owner’s duty to keep up their automobile correctly, and to possess the timing belt inspected at 30,000 miles and replaced at 60,000 miles. Consequently, in case the belt has under no circumstances been replaced and it breaks, so sad as well undesirable.


Chevy Aveo Should you drive an Aveo, you must examine the timing belt if it’s by no means been checked. If your car has more than 60,000 miles on it and the belt has by no means been modified, you should substitute the timing belt devoid of delay.

Replacement belts for this engine price regarding the identical as other engines (GM’s checklist value is all around $90 to get a new belt, P/N 96417177). Aftermarket costs for any replacement belt might range between under $30 to $65 or more.

Other things that should really also be replaced if the timing belt is transformed include things like the tensioner (P/N 96350550), the idler pulley (P/N 96350526) and also the water pump (P/N 96352650). In some situations, coolant dripping from a leaking water pump seal has gotten into the tensioner bearings, causing the tensioner to seize and snap the timing belt. The labor to change the belt, pulleys and water pump is close to 2 hrs, so with parts the total repair bill may possibly be $400 to $600 for anyone who is paying a mechanic to complete the get the job done for you. Though high priced, it certaily expenditures much less than replacing the cylinder head if the timing belt breaks and damages the valves.
Chevy Aveo Timing Belt


Like all timing belt replacement jobs, the timing belt cover within the front of the engine may have to come off. But first you might have to obtain various other parts out of the way. Start by disconnecting the battery. Then remove the intake air temperature (IAT) sensor connector, the air intake tube from the throttle body, the breather tube from the valve cover, along with the air filter housing. Upcoming, remove the proper front wheel so that you can remove the splash shield behind it.

With these other parts from the way in which, you could remove the serpentine belt, and then the crankshaft pulley bolt and also the crankshaft pulley (you will possibly require a puller to obtain the pulley off the nose in the crankshaft).

Following, you are able to remove the upper timing belt cover, then the reduce cover. The power steering pump bolts can even need to come out.

Place the crank pulley bolt back in to the finish of the crankshaft, and rotate the crank as wanted to align the mark on the crankshaft timing belt pulley with all the notch around the bottom with the rear timing belt cover (the mark should be straight down).

Now you are able to loosen the water pump bolts and rotate the pump counterclockwise with special tool J42492-A (KM-421-A) to alleviate tension around the belt. The timing belt can now be slipped off. Don’t disturb the place from the crankshaft or camshaft pulleys until the brand new belt is in place.

As we stated earlier, this is a good plan to also go ahead and in addition replace the water pump, idler and tensioner pulleys at the moment, too.

Installing The brand new TIMING BELT

The next is taken right in the Chevy services literature:

1. Align the timing mark to the crankshaft gear on the notch about the bottom in the rear timing belt cover.

Vital: Guarantee that the exhaust camshaft gear dowel pin (1) is approximately during the 11 o’clock position.

2. Align the timing marks around the camshaft gears.

3. Install the timing belt.

4. Rotate the coolant pump clockwise making use of the J 42492-A.

5. Rotate the coolant pump clockwise till the modify arm pointer with the timing belt automatic tensioner is aligned to the notch while in the timing belt automatic tensioner bracket.

6. Tighten the coolant pump retaining bolts.

7. Rotate the crankshaft 2 complete turns clockwise employing the crankshaft pulley bolt.

8. Loosen the coolant pump retaining bolts.

9. Rotate the coolant pump until eventually the adjust arm pointer of the timing belt automatic tensioner is aligned together with the pointer on the timing belt automatic tensioner bracket.

10. Tighten the coolant pump retaining bolts. Tighten Tighten the coolant pump retaining bolts to 10 Nm (89 lb in).

GM suggests rotating the crankshaft twice right after the first adjustment to generate certain each of the timing marks are appropriately aligned. They also recommend loosening the water pump bolts, and rotating the water pump clockwise once again to generate sure the tensioner pointer lines up together with the notch within the bracket. You don’t desire a loose tensioner since it may possibly make it possible for the belt to slip and jump time. Additionally you do not want the belt also tight due to the fact which can shorten the existence on the water pump shaft bearings and seal in addition to the timing belt.

When the belt has become properly tensioned and double-checked to create positive the timing marks are effectively aligned, you’ll be able to put every thing back during the reverse order it was taken apart. The suggested torque for your crankshaft pulley bolt is 70 ft.lbs. (95 Nm) plus and angle turn of 30 degrees followed by a final turn of an supplemental 15 degrees (use a torque wrench and angle gauge to be correct).

Also, if you remount the appropriate front wheel about the car, use a torque wrench on the lug nuts.

Lastly, inspect the timing belt just after 30,000 miles, and change it once more at 120,000 miles, and again at 180,000 miles.