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2003 Sonoma SLS ext. cab 4.3L / 4x4
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Had all front end redone now my 4wd ain't working actuator is engaging please need help
Could you define what "all front end redone" entails? Who did the work? Have you discussed it with them? That may help refine possible problems/ causes.
 

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Verify the front diff actuator is truely engaged, check vaccum lines are not leaking from the engine bay to the t-case. The actuator under the battery also goes bad aswell if it leaks. If there is any vaccum leaks it is common for the actuator gears to get striped or rubbed down in such a away that it will force the shift collar off as it tries to engage.

If the front diff is engaging or there is no vacum to the actuator check the shift motor on the t-case and the buttons on the dash. If you have questions let me know and ill do my best to help answer you questions.

It goes from the push buttons, to the shift motor, then to vaccum lines which goes to the actuator then finaly goes to the shift fork inside the front diff. There is alot that needs to happen in order for the 4wd to function correctly

Sent from my SM-G781U using Tapatalk
 

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Discussion Starter · #8 ·
Could you define what "all front end redone" entails? Who did the work? Have you discussed it with them? That may help refine possible problems/ causes.
Yes i have to take it back so they can look at it cause it did work before i had everything replaced all control arms both cv axles & they pulled the differential to weeks my frame
 

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For the love of Pete...use punctuation or have you posts deleted. I'm tired of this kindergarten English crap.
 

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Discussion Starter · #10 ·
Verify the front diff actuator is truely engaged, check vaccum lines are not leaking from the engine bay to the t-case. The actuator under the battery also goes bad aswell if it leaks. If there is any vaccum leaks it is common for the actuator gears to get striped or rubbed down in such a away that it will force the shift collar off as it tries to engage.

If the front diff is engaging or there is no vacum to the actuator check the shift motor on the t-case and the buttons on the dash. If you have questions let me know and ill do my best to help answer you questions.

It goes from the push buttons, to the shift motor, then to vaccum lines which goes to the actuator then finaly goes to the shift fork inside the front diff. There is alot that needs to happen in order for the 4wd to function correctly

Sent from my SM-G781U using Tapatalk
the actuator works the lights on buttons stay on & you can hear the transfer case shirft
 

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So if you are 100% sure the actuator is working and the lights are on in the dash, im not 100% sure maybe a bad cv axle? Or maybe in the t-case but for me its allways the front diff gears or actuator not working.

Sent from my SM-G781U using Tapatalk
 
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