Truck does not want to start or shift from park

BKNIGHT181

MEMBER
2008 CHEVROLET TRAILBLAZER
4.2L
6 CYL
4WD
AUTOMATIC
90,000 MILES

We had gone to breakfast one morning it was running fine, an hour later we turned it over it started running really really rough and then would shut off. We tried to turn it over it would just go on and on and on and on, but would not start. Then it got to the point to where we could not even turn it over at all and the transmission will not come out of park. All my lights blinkers and everything come on, but my gauges do not show me what I have. I have replaced the ignition switch the starter relay and the power-train relay. When I turn the key over everything clicks and sets but I have no start and still will not come out of park.

Saturday, December 9th, 2017 AT 9:55 AM

1 Reply

JACOBANDNICKOLAS

MECHANIC
110,176 POSTS

First, as far as the park issue, check to make sure the brake light switch is good. It powers the park lock solenoid. If the brake lights aren't coming on, focus there first.

https://www.2carpros.com/articles/brake-lights-not-working

As far as the no start, if the starter is turning the engine but it still will not start, check the computer using a scanner to see if there are trouble codes. They will point you in the right direction.

https://www.youtube.com/watch?v=YV3TRZwer8k

If no codes are present, see if the engine will start for a couple seconds using starting fluid. If it does, then the problem is fuel related. If it still does not start, it is ignition.

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Monday, December 11th, 2017 AT 5:18 PM