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Sierra 1500

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Question
My truck suddenly didnt run
Hi There, This may be related to many different possibilities, some of which may be related to a lack of spark or possibly timing issues and some of which may be related to a fuel delivery problem or a combination...
Question
Transmission problem?
What you are describing may be a result of a faulty speed sensor, potentially low transmission fluid or a even a faulty transmission control solenoid. As your vehicle travels down the road, the computer analyzes data being sent by vehicle...
Question
oil pressure on 80 what can be the problem?
The best scenario is if the oil pressure sending unit is simply bad. The sending unit can be tested and/or you can simply tee in a known good gauge to rule the sending unit in or out as the cause....
Question
Can i drive my truck with a small leak from the oil pan gasket
Hi There, Unfortunately, an oil leak from the oil pan is the area of the motor with the largest capacity of oil. A leak from this area can quickly go from very minor to very major with little time to...
Question
Every time I put my key into the ignition lights flicker, radio comes on, and check engine light comes on.
Hi there. There is an issue with the ignition switch when you are turning the key. The tumbler may have worn contacts within the switch causing the lights to flicker and the radio to come on when it is turned...
Question
Squeaky Brakes
Hello there, brake squeak is a very common issue with your 2006 GMC Sierra. There are likely causes of brake squeak such as incorrect pad material, item stuck in backing plate, caliper guide pins seized, or worn brake pads. Though...
Question
Have a 2013 GMC Sierra 1500 Denali with 6.2l v8 need to replace my alternator how do I tell which one I need a 145amp or 160amp
Alternator output is matched to the vehicle. If it is optioned to where it calls for the 160 amp alternator and you install the 145 amp, you can experience a frequent dead battery. You should install the correct one for...
Question
Don't know which amp alternator to get to replace mine.
Hi there. The amperage rating is not the power of an alternator but rather the output that it can handle. Either alternator will work on your vehicle with no problems. I recommend putting in what your vehicle came with stock,...
Question
Having an issue installing engine mounts
Hello. There should be a bracket that the motor mount bolts to which that bracket bolts to the engine itself. You should be able to loosen the bracket (remove all but one bolt) or remove the bracket just enough to...
Question
4wd switch wont work please help!
I would recommend using an obd 2 scanner to determine if your 4 wheel drive system has any trouble code. If any trouble codes are stored in your vehicles computer this will help to determine what the problems with your...
Question
No power any were, fully charged battery.
Hi There, You may want to double check the ground connection to the chassis of the truck. As you may know, the ground wire connects the vehicle battery to the metal chassis, completing a circuit. Without the ground wire, the...
Question
My truck decelerated from 65mph on a flat surface without any warning.
First check for any fuel in the fuel tank. If there is fuel in the fuel tank, then turn on the key and listen for the fuel pump to hum. If there is not humming sound, then check the fuel...
Question
Transmission has delay shifting and no second. Change fluid and filter replace 1and 2 shift seliond no change.
Hi There, What you are describing sounds like possibly a bad speed sensor or potentially a faulty transmission control module, which also controls the speed sensors. The transmission control module has various sensors such as vehicle speed sensors, wheel speed...
Question
Interior dim lights out and won't come back on
Hello, thank you for writing in. The fuses that you need to check are located inside the cabin near the dashboard. These are the fuses pertaining to lights you are concerned with. Keep in mind the vehicle should always be...
Question
Dead truck battery every time it's left off for a few hours.
If the battery is new and charging system output has been measured and is within specifications, the only reason a battery will discharge is if the car sits for a long period of time (batteries will self-discharge even if not...
Question
Hazard lights are on and will not shut off.
Hi there. The hazard light switch may have been damaged during the event that the airbag was deployed. Get the airbag replaced and reset the airbag light and see if the hazard lights go out. On newer cars, the hazard...
Question
My car will run but stall out randomly.
The fuel pump is going to most likely be the cause of the no start and stalling. You may also have problem with the fuel supply module if your truck is equipped with the flex fuel control module. You will...
Question
Can you help me figure out how to fix a wobble in my truck..
Hello there a few things that I recommend checking to help you find the cause of your wobble. It is possible that the drive shaft is out of balance, the leaf spring bushings are bad, worn shocks or possibly bad...
Question
If my ecm pcm touches the frame and it sparks does it cause the computer to mess up.
Hi there. What you are describing is an indication of a serious electrical glitch within the ECM or PCM. The best way to determine this is to either have a professional mobile mechanic come to your location and attempt to...
Question
My truck is pulling left during hard braking and pulling hard right when accelerating or getting jostled. 2012 GMC Sierra
Hi there - I would get a 2nd opinion on the front suspension. Something, hard to say what without direct inspection, is shifting under load: a control arm bushing, suspension link, or tie rod end. I recommend a steering and...

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