2006 Pontiac G6. 4 cyl engine. New air filter, oil
change, transmission flushed.
Question: My car goes very sluggishly up hills...it
seems fine on nice flat roads, but when going up
hills, top speed is about 20 - 25 mph. It seems to
stay at 3000 rpms and won't shift down...It has
almost 100,000 miles on it. Is it just getting old?

Answer:
No, its not getting old. From what you describe, it
sounds like you may have a
catalytic converter
problem. Once they get a lot of miles on them, or
get clogged up from bad gas, engine problems, or
lack of maintenance, they will cause a driveability
issue like what you are experiencing. If it does
need replaced, you should get the correct
converter for you car. Some muffler shops use
cheap aftermarket catalytic converters which will
just cause more problems down the road. Also,
with 100,000 miles on the car, you should consider
a major tune up, including spark plugs, necessary
filters, coolant flush, etc.
Problem with my 2007 Pontiac G6 3.5L V6. Low coolant level
warning on dash.
Added antifreeze several times.
My 2007 Pontiac G6 with the 3.5L v6 engine is loosing anti-freeze.
We have added several times, but gets low after driving a few
weeks. When it goes low, the heater wont blow warm air when
sitting at an idle. We have taken it to a shop 2 times. They pressure
test, but cannot find a leak, although we smell it from time to time.
What can I do to repair this problem?

Answer:
The first thing would be to have a cooling pressure system test done
to see why you are low on coolant. Low coolant will cause air
pockets, and that is the most likely cause of no heat in the car, as
long as the engine temperature is up to normal.

Some common areas are of course water pump, hoses, coolant
pipes. There is a technical service bulletin on this car for no heat at
idle. There is a procedure to remove air pockets that could be done.
I will send that to you in a moment. The problem with this bulletin, is
where did the coolant go to begin with. We have seen several of the
3.5l, and 3.9 V6 engine have leaking head gaskets causing this
condition. There are several places that are common for them to
leak. I will send a picture of these areas, so you can check it out
yourself.
If you need more assistance, just let me know, JK
Pontiac G6 Has No Power-
Check Engine Light- Coolant Leak
2007 Pontiac G6. 2.4L check engine. Replaced cam shaft
sensors(2).
The light came back on after replacing the sensors. Tried to have it
scanned again but the scanner won't turn on,the guy told me i have
a blown fuse. Two other guys tried,but,the same thing
happened,their scanners won't turn on either.Do i really have a blown
fuse or is the problem something else?

Answer:
If the scanners will not turn on, you have a power problem to the
diagnostic connector. Usually the fuse blows, so yes I would think
that's your problem. It is usually on the same circuit as the lighter or
auxiliary outlet. Check the fuse box to find out which. You have
multiple fuse boxes on your vehicle, one under the hood, one in the
car and one in the trunk. Most likely the fuse you're looking for is in
the fuse box under the hood. Once the fuse is replaced you should
be able to power up the scanner and clear or check the codes again.

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