Trailblazer 302 starting problem

[Chadwick]

My 2004 trailblazer 302 is acting up. The other day I went to start and turned the ignition and nothing. My buddy said it's probably low on oil and won't let you start. The battery is less than a year old and I use it almost everyday for my business. Any ideas before i take it somewhere???

chad

[H80N]

My 2004 trailblazer 302 is acting up. The other day I went to start and turned the ignition and nothing. My buddy said it's probably low on oil and won't let you start. The battery is less than a year old and I use it almost everyday for my business. Any ideas before i take it somewhere???

chad

As in.. it would not crank?? or what..??

hope you have NOT jump started it.... that would be an expensive mistake..

[Chadwick]

As in.. it would not crank?? or what..??

hope you have NOT jump started it.... that would be an expensive mistake..

No didn't jump it that's why it's got a newish battery. Turn switch and nothing happens no electrical no nothing. I checked oil and added a little and it started up but that was a day or so ago
ran it next day fine
tried to use it Friday and nothing, checked oil and it reads good??? Don't know where to go next

[H80N]

No didn't jump it that's why it's got a newish battery. Turn switch and nothing happens no electrical no nothing. I checked oil and added a little and it started up but that was a day or so ago
ran it next day fine
tried to use it Friday and nothing, checked oil and it reads good??? Don't know where to go next

Cleaned the batt terminals?? and measured batt voltage?? should be about 13.8vdc

[duaneb55]

Got a VOM? Start by checking for battery voltage at the battery and then at the ignition switch and then at the starter engage terminal in START etc.

Have you checked to make sure you battery connections are good? On both ends - at the battery and starter/ground?

[Chadwick]

Cleaned the batt terminals?? and measured batt voltage?? should be about 13.8vdc

Battery terminals are clean. Puts out 12.7voltsfrom battery and that's what it's getting at the starter but it's completely dead got cover off don't know how to check ignition.

[H80N]

Battery terminals are clean. Puts out 12.7voltsfrom battery and that's what it's getting at the starter but it's completely dead got cover off don't know how to check ignition.

Did you check the manual..?? pg 49

Engine will not crank
.

Check fuse F6, and replace if open (see Section 8-11).
Check battery voltage.
Check battery connections and tighten if necessary.
Check plug PLG5 and plug PLG8 connections.
Have Factory Authorized Service Agent check Engine Control switch S2.

http://www.millerwelds.com/om/o4426ae_mil.pdf

[Chadwick]

Did you check the manual..?? pg 49

Engine will not crank
.

Check fuse F6, and replace if open (see Section 8-11).
Check battery voltage.
Check battery connections and tighten if necessary.
Check plug PLG5 and plug PLG8 connections.
Have Factory Authorized Service Agent check Engine Control switch S2.

http://www.millerwelds.com/om/o4426ae_mil.pdf

Yes everything is good
i don't know how to check engine control switch
whats a new switch cost? Seems easy to replace

[H80N]

Yes everything is good
i don't know how to check engine control switch
whats a new switch cost? Seems easy to replace

Batt voltage seems low ... fully charged should be around 13.8 vdc

You Checked plug PLG5 and plug PLG8 connections..??.

[Chadwick]

Yes both connections

[Chadwick]

Should I try charging the battery to see if that's the problem?

[H80N]

Should I try charging the battery to see if that's the problem?

I would...

first disconnect the battery and trickle charge it overnight

would also clean the connections to the starter and switch...

don't forget the ground connection..

[gnforge]

Trailblazer 302 starting problem

Had a similar problem on wife's jeep. Found poor connection on trigger wire at starter. Was loosing connection where eyelet was crimped on at solenoid terminal. If I would wiggle wire harness wile she held starter in it would start.
Crimped on new eyelet works fine.
Just another thought