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Avalanche 1500

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Question
My camshaft sensor has gone out repeatedly over the past week.
Have you checked on other items to rule out problems like compression, fuel pressure and the ignition system? Poor fuel delivery or a weak ignition system may cause stalling. A technician can install a scan tool and monitor the values...
Question
I accidentally hit the panic button on the key fob of my 2005 chevy avalanche and now it won't start. I put a new battery in the key fob.
Hi there. Remove the battery cables (+ and -) and then put them back on after 12 minutes. This will clear the computer out and reset the security. Then put the key in the door and as you unlock the...
Question
My car has low oil pressure. I've already changed the oil pressure sensor 3 times.
If you have replaced the sensor three times and it did not fix the problem, then you may have problems with the oil pressure being low at idle due to wear in the engine bearings. The reason it would be...
Question
ABS and brake light is on
If the ABS warning light is on, that means that there are downloadable ABS diagnostic trouble codes, much like the codes you would download if you have a Check Engine Light diagnostic. The ABS trouble codes will give a general...
Question
Possible security system problem. Engine starts and then dies.
The security system would disable the vehicle from starting in the first place and the vehicle would not even turn over. It is unlikely that this is the issue. Do you know that the battery is working? Try to...
Question
My abs and brakes light is on..
Hello. I usually start by checking the brake fluid level and the level sensor. Most of the time when these lights are on together it is because of low fluid. If the fluid level is good and if the sensor...
Question
It will not start and the headlights and hazard lights are blinking
GM vehicles equipped with the PASS-KEY or VATS anti-theft system usually require the system be reset whenever the battery is drained or replaced. Follow this procedure. Step 1 – Attempt to start the vehicle. It will crank, but not run....
Question
Service Brake System Light beeps on for a minute then turns off
There is a problem with your brakes or the ABS that is turning this light on. A code reader should tell you what specifically is the problem. Most likely, a wheel speed sensor is dirty or has failed. This is...
Question
Oil pressure loss - 2005 Chevrolet Avalanche
Hello - no, most likely this is the oil pressure relief valve sticking in the "open" position when the pressure comes up. It may then release after sitting a bit, or when you next hit the starter. The early 4.8/5.3...
Question
Ran out of gas, now my car won't stay running.
We can start by assuming the issue is related to spark, fuel, or air. If attributed to fuel, it will be a clogged or weak fuel pump. If the vehicle ran out of gas when this started, you may have...
Question
Diagnose torque converter selenoid or transmission
Hi there. The computer could be putting the vehicle into limp mode due to an issue that may be happening and reduces the engine performance. Check the battery, alternator, and all of the sensors on the engine and make sure...
Question
Shaking when braking and clanking/banging noise coming from what seems to be the exhaust.
Hello, thank you for writing in. The vehicle is likely facing two different issues. While it is possible you are feeling a rough idle in the steering wheel, you may be facing a worn or dirty brake. The extra strain...
Question
possible transmission problem.
Hi there. Since the transmission fluid is a little dirty, I recommend replacing the fluid with the transmission filter. The torque converter will be working normally at all times and it will not cause the vehicle to slow down when...
Question
When power steering pump cap is removed should there be a slight presure release
You should have the power steering reservoir cap checked to make sure the vent on cap is not blocked. Also make sure the system is bled of excessive air in the system. Once these two things are checked then you...
Question
Low oil pressure - 2002 Chevrolet Avalanche
Hi there. If you are having a low oil pressure on the gauge, put a mechanical gauge on the engine and check for oil pressure. If the oil pressure is 40 psi or higher, then the engine is fine and...
Question
Check Engine Light is on
Your check engine light may come on for many different reasons such as a faulty mass air flow sensor, a faulty O2 sensor, a bad catalytic converter, bad spark plugs or wires and many other reasons. Unfortunately due to the...
Question
I'm getting high oil pressure readings when Accelerating
This may be happening for a a few different reasons such as a faulty oil pressure gauge in your dash, too much oil in the motor or clogged oil passages. I would start by checking the oil in the motor...
Question
Truck won't start in morning. 2nd day now. Battery seems good.
Since the symptoms changed when you touched the battery terminal, it leads me to believe you may have a poor connection and the main battery terminals. If they are badly corroded or have any small cracks, the terminal may be...
Question
Starts and idles fine but then stalls. What causes this?
This is a common sign of a faulty ignition coil. Ignition coils are coated with a varnish-like insulation that becomes brittle over time after being stretched then contracted repeated as the copper beneath them expands and contracts at a higher...
Question
I changed knock sensors on 2002 avalanche which also has after market Whipple charger .now it idles at 2000 rpm could it be the IA
Hey there: Anytime you install an aftermarket power adder (like the Whipple), it's common for tuning issues to occur. If your increased RPM happened right after replacing knock sensors, it's very possible that a vacuum line may have been removed...

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