Car Repair Questions And Answers Lists
We are current GM dealer, ASE Certified auto mechanics offering free help and advice.
Read through this main car question list of all models or choose from specific vehicle question lists on the right.

Multiple Lights On chevy Impala
My car in the morning when I put the key in the ignition and turn it to start all I hear is a humming noise from
the back of the car which lets me know the fuel pump is working, well it should its been replaced, all of the
lights come on air works headlights work but the dash lights go off when I try to start it and it will not start. I
have to try to start it several times before it will finally start. Then while driving the air bag light comes on then
a few minuets later the battery light and brake light come on flash then all 3 lights go off.

Transmission Won't Move
I replaced the engine on my car, now the trans is not shifting. I checked the fuses and electrical connectors.

Pontiac GTP MAP Sensor
Live chat: Where is the MAP sensor located on a supercharged Pontiac Grand Prix GTP 3800 motor? I
cannot seem to find it . I found pictures of regular engine location, but not the supercharged. Also,the blower
speeds are not working. I replaced the motor and resistor already. What else could be wrong with my car?

Chevy Aveo Engine Light
I have a check engine light on . I have a bad wheel bearing . I was wondering if that could make it come on. Its
a code P0441 code. Already replaced the gas cap and the charcoal canister. Its a humming noise  it gets
louder the faster the car goes. What is abs light?
3800 cam Sensor Replaced Three Times
Live Chat: The 1990 Buick 3800 was a car my father purchased 10 years before his death and I have
repainted and restored it to like new and drive it daily. Problem is the cam sensor I have replaced 3 times.
Have check the magnet on and it is in place. After first replacement it worked for a week before failing.
Do you have an engine light and code?
Yes but I do not remember the code number.

Pontiac Bonneville Radiator Fans On
Live Chat: what would cause a low temp fan to come on with the high temp fan in a 1995 Pontiac Bonneville.
Both fans come on at the same time or low first then the high? Same time at 226 degrees then they both
shut off at around 200 degrees. Both fans come on when the A/C is turned on also.
GMC Jimmy ABS Light And No Brakes
Live Chat: The abs warning light has been intermittently coming on in our GMC Jimmy 2000. Today the
brakes completely quit working during a stop. The regular brake warning light never has/did come on.
Placed vehicle in park, turned off engine, and restarted without further incident, except of the abs light
continuing to light periodically. Taking the truck to have codes read, three were found. Two for the front
right wheel, and on for the rear right wheel. All three pertaining to sensor failure or intermittent failure.
Wouldn't there need to be something wrong besides a sensor, for the brakes to fail?

Airflow Won't Change On Chevy Lumina
The heat in my 95 Lumina works but when I turn the nob to switch from defrost to the vents it doesn't switch
it only blows out the defrost and on the floor a little. No matter what I turn the knob to it just comes out them
places. Is it some thing to do with a vacuum line. When I turn it to air the compressor kicks but doesent blow
cold air. I don't think its the knob because it makes the compressor kick on so I am confused hope you can
help me.
Ford Focus Stalling Out
i have some problems with my car, some time stalling, hesitating, cutting out and some few cases it would
shut off, so i've checked most of the sensors till i come to the coolant temp sensor; checked the sensor and
found there's no resistance on it at all (engine is cold, haven't run it for 12 hours; next i did disconnect
connectors and with key on. Have made a test to the wires; pcm side, and i noticed there's no power at all
(no 5 volt nor the ground are exists), then checked the wires to see if they are shorted.
2000 Regal Stalls And Start Back Up
Ive been having a problem with my 2000 Buick regal supercahrged.  It has been dying while i am driving and
when it happens it usually starts right back up. When it dies, no lights are effected and the radio dose not cut
out at all, only the accelerator and power steering is effected. Lately it has not been starting all the time some
times i have to wait 20 min. or longer until it turns over.  It sounds normal when i am trying to turn it over does
not bog down at all.  And it also idles high.
Truck Hesitates And Hard To Start
Purchased the truck a month ago and it didn't get driven much before it was sold. Truck hesitates when
coasting downhill but doesn't seem to do it on level ground, has a hard time running when you try restarting it
after it is hot, and also seems to idle to fast. Not sure if all of this is associated or not.
Ignition Module Keeps Blowing
Hi I was searching around and found your site and can tell you guys know what you're talking about.  I have
worked on cars at a dealer for 15 years and know a lot about most things, but you always get a basket case
now and again. This Bonneville keeps blowing the ignition module.  It came to me and the owner said a shop
had already replaced the ignition module and drove the car about 2 miles and it died.  They then replaced
the crank sensor and the car still wouldn't start. I got the car and checked the ignition module by doing tests
for the 3x and 18x crank signal checked for power and ground at the module
Low Oil Pressure At Idle
My Olds 98 Regency has low oil pressure after replacing the intake manifold. Is there a sensor that can
cause this problem? Intake manifold, upper-lower gaskets,fluids, oil pressure switch, thermostat all replaced.
Intake manifold failure, coolant everywhere, including the air cleaner box,parts replaced fluids flushed and
replaced, currently low oil pressure light that go away when rpm is increased, could any other sensors be
contaminated? Main issue is low oil indication.
Antifreeze Low And Blows Out Tank
After sitting, the coolant is low in my radiator. When i start my car it blows out the
reservoir tank.
2004 Oldsmobile Alero Blows Ignition Fuse
My car is blowing the 40 amp ignition fuse and it won't start. We replaced the
ignition switch and coil but did not fix the car.
Cadillac CTS Slams Into Gear
My 2004 trans is slamming into gears. We had the dealer program the computer.
Could this be a shift solenoid problem?
Key Stuck In Chevy Trailblazer Ignition
I cannot turn the key off and shift into park. The key wont come out. I have
replace the switch and tumblers.
2007 Saturn Ion Code P1174 Lean
My local dealer said my car needs new fuel injectors and a computer re-program.
Can i do the repair my self for a cheaper cost?
2005 Chevrolet Colorado Hard Starting
My truck is hard to start when the engine is hot. Also the blower only works on a few speeds,
even though we replaced the fan resistor.
Grand Prix CEL Flashing
Hi. I have a 1997 Pontiac Grand Prix that i bought last week. It ran great no CEL ON. Hot a coolant flush, oil
change and my husband did a tune up cause it was showing signs of needing one. New plugs and wires, He could
not get one plug out so he left it. Went to get emissions test and computer wasn't ready. Still no check engine light
on. Drove for 5 or 6 days no problems. Went back 2 days ago to get emissions and passed yesterday morning.
CEL flashing.
2005 GMC Sierra A/C Blows Warm
When coming up to a stop, the air conditioning will start to blow warm, then when I accelerate
the vents will blow cold again. Whats' wrong with my truck?
Whine Noise in My 2008 Impala
Question = Well.. Say I want to pass someone. I get into it, RPMs go up. And I
hold it there for a minute. After i park it and let the car idle, I hear a, like a whine, or  "power steering" whine, but
its not the P.S. It won't do it when you turn. After  letting sit and idle, if you rev a little, the engine whines, and
gets louder. Any  suggestions why my Impala is doing this? Thanks! After letting sit and idle, if you rev a little,
the engine whines, and gets louder. Any  suggestions why my Chevrolet Impala is doing this...
2005 Chevrolet Starter Wont Engage
Replaced starter and battery. Car will not start when outside temp is cold.  After it warms up it will start and run
great.  Key turns, lights work and all but car will not turn over. Why does my car. I was driving down the road and
it died on me. It would not turn over, i check the starter and it wasn't engaging the fly wheel so i change it now it
wont turn over.
Question = i was driving down the road and it died on me. It wouldn't tun over, i check the starter and it wasn't
engaging the fly wheel so i change it now it wont turn over. It sounds like it isn't getting no fire but cant tell.
Chevrolet Silverado Blower Module Location
I need to find the HVAC module to replace it in my truck. A few of the blower speeds no
not work. But could this be the resistor gone bad also?
Chevy S-10 4WD Not Working
I repaired the transfer case module, but still have this problem with my truck. The four
wheel drive won't engage. Using a wiring diagram schematic to diagnose it.
Intake manifold Gaskets Question
How many holes are there in the manifold of a 3800 V6? Two of mine are plugged with
junk from the Dexcool antifreeze. Do I scrape it our or is this a problem.
Chevy Camaro Starter Just Clicks
I have changed the starter motor several times and installed a new battery but car
just clicks when trying to start it. Could it be the security key?
Cadillac Deville Grinding Noise
My 1998 Cadillac Deville has a noise in the front when accelerating. The traction
warning light is on. A mechanic said I need an ABS sensor.
Pontiac G6 Engine Light
New cam shaft sensors. Went to have it scanned and the mechanic said scanner won't
read the codes. Could it just be a blown fuse or some other problem on my Pontiac.
Chevy Blazer Transmission Problems
Had the trans fixed on my Blazer but it still only has first and second gear. Mechanic said
a fuse is blowing for the shift solenoids.
Saturn Aura Brake Light Always On
The brakes lights on my 2007 Saturn Aura are on all the time. Whenever the car is
running or the key is on when not pressing the pedal.
Chevrolet Impala Service Traction System
My car has a grinding sound when accelerating, and the Traction light is on. What
are some things that cause this problem.
Chevrolet Trailblazer Dies at Idle
When i turn on my a/c and let it idle the rpm dips very low and almost shuts off until i rev it up
again but if i let it sit there it shuts off, it does the same thing when i turn on the heat, other than
that the engine is fine, but only when the a/c and heat get turned on it starts to die
Saturn SL2 SES Light
i have a 2000 Saturn SL2. It has 171xxx miles on it has been running well. But all of a sudden the
other day it would not accelerate past 15mph.  The service engine light has been on but when we
bought the car the previous owner said she had everything checked they just didn't reset the dash
lights for the oil and SES light. But it has been consistently on.
My 2009 Pontiac Has a Clunk
Clunk noise in my 2007 Chevrolet HHR or Pontiac G6.
I have a clunk noise in the front end of my HHR. It happens when i am  turning the  wheel, and also when
going over bumps in the road. Most of the time it is when going  over a set of rail road tracks.
I had the steering and struts checked at a local shop, but  they said they did not see anything. Is there a
common problem with these cars
Saturn Vue Check Engine Light
Does my truck have the timing chain problem like i have read about the Chevy
Traverse, Equinox, GMC Acadia and Buick Enclave.
Dodge Dakota Jerking and Bucking
My 2000 Dodge is bucking when accelerating from a stop or at 50 MPH.
Had an oil change, injectors cleaned and radiator flush.
2000 Silverado 5.3
I had it to a shop for engine code p0135 and misfires on #3 and 7. They replaced
the oxygen sensor and plugs.
Ford F-250 Transmission
My truck tranny will lurch forward and clunk when giving it gas from a stop.
Mechanic said maybe a broken spring under the pan and filter i can replace.
Ecotec Engine Damage
My Cobalt with the 2.2L Ecotec has a bad motor after an oil change. Is there a service bulletin
for problem with the oil filter O ring tearing or rolling and causing damage
2005 Toyota Tundra Idles Down then Died
My Toyota truck starts right up but then the idle gets real low then stalls out.
The maintenance required light is on the dash.
Intake Manifold Gaskets Replaced
I have a 2004 Chevy Impala LS with a 3800 6 cylinder Engine. It has 76000 miles on it and the check engine light
was on. My mechanic told me that my radiator was never flushed and oil was mixing in with the radiator fluid.
(Sounds to me like I had a bad head gasket).
The repairs along with a serpentine belt replacement cost me over $1100 to get repaired. I started hearing a
whining sound and I thought there was a bad bearing on the belt tension guide. The engine light comes back on
two weeks later and it $625 to fix the EGR valve with an oil change. I asked them to check on the whining noise
and the mechanic showed me was whenever the oil cap is removed, with the engine running, the whining stops.
Says he never seen anything like that in the 20 years he been an ASE mechanic.
SES comes on my 2006 Pontiac G6
What can a car mechanic do to repair my Pontiac. Have a lot
of experience but not sure how to fix it..
Check engine codes for transmission
I had it scanned and the codes come up p2761, and p0748. Also it does not start sometimes.
Can you please help with these problems, i absolutely love this car.
Transmission Makes Whine Noise 1999 Grand Am
First, be sure to check the fluid level. Low fluid will cause this whine noise and   shifting problems.
To check fluid level on this transmission, you must go under the car, remove.
Passkey Cylinder Problem
My 1999 Regal will not start. When I turn the key to start the car nothing happens. Is this
problem the Passkey cylinder or the ignition key switch?
Cadillac DeVille Northstar V8 Overheating
Replaced the thermostat and water pump, but the motor is still overheating.
What can I do to fix this problem. Please help.
GMC Envoy Low Oil Pressure
The low pressure, check gauges and stop engine warning lights come on the dash
of my truck. Where is the sensor located to replace it.
Mercury Grand Marquis
Need the serpentine belt routing diagram for my car.
Malibu 2001 theft security
Car Relearn procedure. Replaced the ignition cylinder because the
key would not turn, and now it wont start..
2003 Pontiac Grand Prix Autozone scan code P0753
1-2 shift solenoid problem. We have asked others who say that it probably isn't the problem
because they have never heard of one of those going out and it's probably a wiring issue.
Steering Problem on My 2009 Chevy
I have a clunking noise in the front end and the steering. It happens when i am turning slowly like
in a parking lot. Going forward gear or backwards does not change the sound. When i am driving
and going around a corner or just pulling into my driveway i hear the noise.
Saturn Ion
My car has a clunking in the front end when going over bumps or turning
to the left and right. A mechanic did not find anything loose.
GMC Envoy Idle and Stalls
Replaced the cam actuator solenoid. The truck still idles high then low and sometimes it stalls
and dies out when coming up to a stop or turning at idle.
GMC Yukon Steering Position Sensor
The service traction control warning light is coming on the dash. Tech2 DTC
is for the steering wheel position sensor code C0455.
How To Disable Daytime Running Lights
I need to turn off the DRL and automatic lights. Is there a switch or
something else I can do.
Chevy Caprice Service Engine Soon
Car runs for a while then starts to cut off when i let my foot up. It skips
then stalls, had a hard time getting going again.
1995 Chevy Lumina Starts And Dies
Unable to check codes.
I replaced fuel filter, fuel pump and strainer.
On a cold start the engine runs for about a minute then shuts off no sputter. Immediately try to start and it
sputters and won't start. Wait about 1-2 minutes and it starts fine then dies after same time limit. If engine is
revved up it chokes and dies. No signs of water in the fuel and it seems to have adequate fuel pressure. I have
no FP gauge to check FP.
2005 Suburban Transmission Shifting
My transmission is not shifting from 1st to second or third gear. Reverse is
working fine. The check engine light is also on. What is wrong with my truck?
2004 Ford Taurus Wont Start
I basically know the answer just need a confirmation. My neighbor helped me change my starter recently as I am
disabled. Anyway the car would still only click and after reading some forums I decided that the battery cables were
probably making a bad connection and should just replace the entire 2 cables. He said no and cut off a length of 1 cable
and the car starts but he cut off what looks like a fusible link and he said it shouldn't even be on there and was N-rigged
I told him I had bought the vehicle brand new and the factory must have done the N-rigging and even offered to take it to
the nearest Ford dealer so he could argue with them. He declined.
Hyundai Elantra Overheating
While my wife was driving, she heard a loud bang under the hood then water through the top of the hood.  I looked at
it hours later.  The overflow reservoir was completely full. I checked all the hoses and couldn't find where the water
was coming from. I started the car and no leaks.  It didn't seem like the coolant was flowing but the car wasn't getting
too hot after about 10 minutes.  One fan came on.  I touched the radiator cap and it was still very cool. I turned off
the car and took the radiator cap off.  No pressure.  I added coolant then started to see steam coming up.  I poured
more coolant and it just flowed out of the radiator as fast as I can pour it.
Chevy Tahoe Rear Gate Ajar
When i drive and go over a bump all the doors start to lock and unlock non stop.  
Sometimes it starts when I go over a bump in the road and sometimes it just starts when
I am driving.  It also says the lift gate is open.
Coolant Fans and Compressor
The A/C compressor and the radiator fans will not come on. Checked for burned wires and
connections. All seems good but still won't work. What can this problem be.
Chevy Battery Dead
I have a 2002 Chevy Cavalier that had an inoperable charging system. I replaced the
alternator and the battery and there was no change. I soon found out that the
alternator was not getting it's start signal from the PCM. I know this because I saw a
diagram on the charging system and the red and gray wire that make up the connector
come straight from the PCM. The red one is the alternator start signal wire! The car
ran perfectly other than the charging problem before I disconnected the PCM plugs to
do a continuity test on those 2 wires.
GMC Clicking In Dash
I Changed actuator motor for the a/c and heater door.
Question = I hear a whirring and then a click click sound in my dash. The temperature control would
change from cold to hot. I was told it was the actuator motor. I replaced it with a known good one. I
took the Hvac1 fuse out to reset the motor but it still doesn't work. I took the motor off of the dash and
moved the control knob from cold to heat but the motor didn't rotate. Also while I had the fuse out the
whirring and clicking noise did not sound. But when it is put back in the sound comes back. Any help
would be greatly appreciated.
Humming Noise In Front End
My 2001 Chevy has an ABS light and noise in the front end. We have replaced both wheel hub
bearing but the light is still on. What is wrong with my car?
Headlight Socket Burned
The headlight on my Trailblazer burned the bulb and socket so i replaced it.
No fuses blew. Will this repair last.
Chevy Silverado Reduced Power
Started to run bad and the SES light came on. Is it the catalytic converter or oxygen sensors.
2002 Silverado Transmission Problem
The trans is slipping when slowing down coming off the highway and also taking off from a stop.
Ford Escort Hard to Start
Stalls out unless i give it gas to clear it out. SES light is flashing. Seems like a fuel
injector or idle control valve problem.
Fuel Gauge Goes to Empty
The gas gauge in my 2006 Chevrolet Malibu goes to empty at times. My wife ran out of
gas once. Is there a fuse or relay for this problem.
Battery Going Dead
Replaced the alternator but still does not charge. Tested wires
to the PCM. How can i be sure the computer is bad on my car.
Where is the Freon fill Port
The A/C is blowing warm and i just want to know the exact location so i can add freon
my self to the A/C system.
2003 Cadillac Won't Start
Try to scan computer  for codes but will not connect. Tried the theft relearn but did not help.
Has new battery. Can I go to the Chevy Dealer?
Check Engine SES After Oil Change
Got an oil change today with 5W 30 at the local Jiffy lube and a new intake air filter (not the main
filter on the engine the one against firewall). Suddenly like 1 km away, the check engine light came
on. Won't turn off. I reset the oil sensor according to owners manual.
Heater A/C Problem on My 2006 Chevy Impala
When I change the temp. of the A/C under the dash it starts to make a loud clicking noise. It
starts on one side and moves to the other side.
Cost To Repair Auto Power Steering Warning on 2007 Cobalt
Seen where you answered this question on a car with 31000 miles and i  was wondering if mine was
under the same warranty due to my mileage. I dont know  how to find...
My Car Has A Check Engine Light
Service vehicle soon, check engine code P0442.
The intake manifold gasket was replaced about 2.5 months ago.
Question = About 2 weeks ago the service vehicle soon light came on, but it would clear when car was
restarted. Yesterday, dash would not light up and auto head lights would not come on immediately after car was
started, but everything would start working after a few seconds. Now various warning lights will stay on and gas
gauge will not work after a start, but everything then starts working after a few seconds. Now the check engine
light is on with a code of P0442. These problems do not occur each time the car is started. A different
combination of head lights not working or warning lights occur each time.
2010 Suburban Alternator and Battery
The voltage gauge in the dash of my truck goes up and down when driving. There is also a burning
smell under the hood. GM dealer said that is normal function of charging system.
Pontiac Torrent Heater Blows Cold
When turn the HVAC controls to defrost, floor and vent if fine. Temperature will not change to
hot air, only cold. I removed the door motor and the little shaft is ...
Odometer and Gear Shift Question
Car odometer and gear shift selector lights going out it is a digital read out and some times it
just goes blank. I can not see anything else wrong all gauges and dash lites continue to work
it is just the mileage
What is the Throttle Actuator Control
On my 2006 Malibu 3500 V6. Where is this part located so i can change it. Read on some forums
that the code i have means the TAC is bad
1997 Oldsmobile Intrique Overheated
New motor overheated. Now they are telling us the motor is shot and we will need another one. Before
the car died it had been driven about 15 miles on the highway and when she got off the highway it was
not showing the temperature was hot
Oldsmobile Delta 88 Airbag Question
Is there a separate sensor for the passenger side airbag on my 1998 Oldsmobile 88? In other words, if nobody
is in the passenger seat does the dashboard airbag deploy anyway in an accident? Thanks.
Answer:
Unlike on todays newer AIRBAG systems, your car does not have a separate circuit to determine if an occupant
is in the passenger seat. Anytime time there is a force sufficient to warrant airbag deployment, both airbags will
deploy. This is assuming the system is functioning properly. If there were a malfunction, the warning light should
be on the dash and have stored Airbag Trouble Codes. The module records data and system status before and
after airbag deployment.
Code p0016
Truck is a Chevrolet Trailblazer. SES code p0016 and i am not too familiar with the  adjustable cam
timing on this 4.2l engine. Would appreciate some help. A common cause for code p0014 or p0106
on Trailblazers and GMC Envoy is the Exhaust Cam Actuator Control Solenoid.
Car Getting Bad Gas Mileage
Checked the FPR and changed an O2 sensor on my Pontiac. Spark plugs and
wires good along with ignition coils, but still getting 8 miles to the gallon and plugs
are black.
Gas Leak
Replaced the fuel pump and sender assembly on my truck, now fuel is spraying
out under the hood. What could i have done to make this problem.
Astro Van Won't Start
After replacing the water pump, timing chain and gears, i get code P0336
and the van will not start.
Rear Brakes
I  repaired the rear brakes pads and rotors on my 1998 Chevy Blazer and now
they drag and get real hot. Caliper pistons and slides are lubed a move freely.
Starter and Brake Pressure Problem
No pressure from brake master cylinder. Starter will turn the engine over.
Back glass and rear wiper do not work. Chevy Malibu and GMC Jimmy.
Nissan Won't Start
After replacing the engine in my 1998 Nissan the engine just cranks but will not fire.
There is gas in the carburetor but it not going into the intake manifold.
Buick Lesabre PCM Bad
A mechanic replaced the PCM on my Buick, it started and ran fine, but now
won't start again. Why does the computer keep going bad?
2003 Buick Rendezvous Won't Start
My truck won't crank sometimes when I turn the key. The security light is on.
Also the interior lights will go on and off when i am driving.
2006 Chevy Cobalt DTC Code P0641
Question = The check engine light is on in my 2005 Chevrolet Cobalt 4 cylinder. Is this something to worry about.
The car runs just fine and starts good. Any damage if keep driving like this. I am out of work and really cant take to
a shop to tell me what is wrong, then sell me a bunch of parts and service. Thanks for any help.
Answer: Any time a check engine ( SES ) light comes on the dash, the computer system is  seeing a problem in one
of the emissions or other systems.
Car Dies At Idle With Air Conditioning On
I replaced battery, resonator, fuel pump, and fuel filter.
Question: I replaced the battery, resonator, fuel pump, and fuel filter on my 2005 Chevrolet Malibu Classic. Still, the
engine dies when I turn on the air conditioning.  Engine does not die when A/C is off, but does seem to surge
occasionally.  Three different mechanics have looked at it, and none know what is causing the problem.  Any
suggestions? Could it possibly be that I need new spark plugs and/or wires?

Buick Anti-Lock After Pads Replaced
Live Chat:
Please. Today my Buick Century had a break rotor and break pads change, a complete new set. A few hours later I
noticed that the anti-lock light stayed on while I was driving. What is the problem? my car is 1994. It is possible that
when doing the brake job, they may have damaged an ABS wheel speed sensor or wiring to one of the front wheel
speed sensors.

Oldsmobile 88 Dies Won't Start
Live Chat:
Yes, i have a 1998 Oldsmobile Delta 88 3800. Car was driving fine. All of a sudden stopped. Tried to crank it but,
won't start. Its turning over very good but will not start. Changed fuel pump. Can you confirm you have fuel pressure?
Yes, I pushed the button on the rail and fuel came out. Checked for sparks at the spark plugs it was good. Didn't
check all the plugs.
Did the fuel spray hard or just sort of come out? Just because there is fuel there, does not mean the PSI is high
enough.

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