Skip the auto shop - Our mechanics make house calls

Q: Car does not start sometimes, sometimes it does.

asked by on

Hey, i have a problem with my 2003 GMC sierra 1500 4.8L v8. When i try and start it sometimes it wont start. I put the key in accessory mode right before i crank the engine and all my gauges start moving like normal but when i try and turn the engine on they freeze and the whole truck loses power. Everything just dies and it feels like i have no battery, everything just turns off. I have to get out and disconnect the battery then reconnect it and it will start just fine. Any ideas?

My car has 160000 miles.
My car has an automatic transmission.

A: Try disconnecting the battery. Disconnect t...

Try disconnecting the battery. Disconnect the electrical connections to the body control and engine control modules. Apply dielectric lube to the pins and seals using small amounts only. Reconnect the modules and then reconnect the battery to see if this fixes the problem for you. If the problem persists, or if you want to have this checked, a certified technician from YourMechanic can come to your home or office to diagnose your starting issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Tail gate won't release

Hey there. The rods connect to the center control handle using plastic clips and these clips or the handle breaks. You will need to have a mechanic remove the inner tailgate cover to gain access to the latch handle and...

Q: buying for 22,000.00

That is a very tough question to answer without being able to see the vehicle first hand. That is a lot of miles, but if it was mostly highway miles, that isn't so bad. If it was a lot of...

Q: My 2003 dodge neon suddely died while driving...Everything works except that it wont start

Whether or not your engine is an "interference engine" depends on which one your car has. The Neon was available with both a 2.0 ltr. and 2.4 ltr. Whether in SOHC or DOHC (single-overhead-cam or double-overhead-cam) form, the 2.0 ltr....

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...