CKNSLS

Again-this is not a permanent fix as reported on various truck forums.

With all due respect-your dealer will not attempt a fix because there isn't one.

This "clunk" is a standard feature of your truck. There may or may not be fixes. It could be drive line, rear springs-but GM doesn't really have a permanent fix.

The front ends are ugly-and the interiors are sub par-especially on the "high end" models. The 2019 redesign has been very much a topic of debate. When your selling over 40,000 units a month-you don't want controversy. A redesign is sorely needed.

Years ago they just used 9 volt battery (the little square ones smoke detectors use) and plug one of those in with an adapter in to the cigarette lighter. I don't know if that would still work today.

Most report the OLM doesn't usually go much beyond 7,500 miles. Even a conventional oil should be able to handle that.

Is it an after market brake controller or OEM? If aftermarket-which one? Have you tried hooking up to another trailer? When was the last time the trailer brakes were checked for adjustment?

With all due respect-most find the 2019 front end hideous. The drop in sales is directly correlated to the redesign.

SOLD!

Bump

check their website www.rangetechnology.com It appears they are selling different devices for those operations.

The Range Device with the new latest software (V8.6R1) does not throw codes or drain your battery. It's been shipping for sometime. Old devices can be re-flashed with the latest software by paying for postage only. If you want one that works I have one for sale on the "Items wanted or for sale" sub topic.

Bump!

I have one for sale under this forum.

For sale one Range Technology AFM device. This device keeps your truck in V8 mode all the time-blue LEDs. This device will work on the current 2019 model as well. The software version is the latest @ V8.6R1 Price is $110.00 FIRM (incs. shipping within the continental U.S.) For any further info-see manufacturer's website https://rangetechnology.com/ Ships from the Salt Lake City area. Thanks for your consideration.