Hi All,I have a 2016 malibu LS, has the 2.5L engine, having trouble with the auto stop/start system, Im looking for wiring diagrams for the starter relay, the pinion starter relay, body control module and ignition switch, been surfing for 2 days for a service manual, bought 2 so far, 1 does not cover the 2.5 in the 2016 malibu, only covers the 1.5,1.8 & 2.0. the other has the 2016 with the 2.5 but does not cover the auto stop/start system. any ideas where to get the repair manual or diagrams I need ?

 

Got a 2015 Chevrolet Malibu. That 2.5 liter motor is one of the best motors Chevy produced. There must be some way to shut the auto start stop, but with practice you can reduce it, by feathering the brake pedal (works 90 percent of the time or putting the transmission into N or M.Don't forget it's a DGI motor, so use something to clean the intake vales.

 

thats not the problem Im having, the system is not functioning correctly so it has knocked out the starting system,I cannot even start it with key, have to jump the starter relay to turn engine over. there is a cool way to bypass the auto stop/start system you can buy a auto stop eliminator, it plugs in the harness under the hood. heres the link their roughly $25 bucks & free ship with prime, they make these for almost all makes & model vehicles

 

I guess I should have closed this out a long time ago. I finally found the problem. it was the 3 bolts that are in the underhood distribution box. their 10mm head bolts, they were unscrewed 5 turns each. they hold the harness connecting it to the distribution box,all the powers and grounds checked good, the can bus passed every test. nothing showed up on my code reader OR my scanner. I tightened those screws after I was going to remove the box and bench test every circuit on it, once the screws were tight, it cranked right up and worked great. bought this car in 2022 from a car lot for a cash special... got halfway home with it and it stalled and the starter had not worked on it since. imagine, something so simple as 3 bolts partially unscrewed and you could not tell by looking at them.

 

closing this post, turned out it was 3 loose screws that hold the harness to the bottom of the distribution center under hood. tightened and all good.