tgg19

I had the same issue on an updated factory unit for my Sierra. I had purchased it from a 3rd party to get Android Auto and called them and they sent me a new unit and I sent them back the malfunctioning one.

It is a tight fit in there and squeezing anything bigger than the H7 will be a challenge at best.

I have the same kit and have had issues over the years. The biggest (but not only) problem I have had is the relays in the wiring harness. They use cheap foreign relays which tend to go bad quickly. I replaced the cheap relays with Bosch 0332019103. It is a direct replacement and I haven't had issues with relays since. They do have a 5 year warranty on parts and have replaced 1 ballast computer and both bulbs when 1 bulb went out.

Sent PM

I assume that you have stock 20" wheels. If so, Michelin - X LT A/S from Costco (Sam's club may carry them as well) have been great tires. I switched the goodyears off at around 35000 miles and replaced with these Michelins. I'm up to 77000 miles and still a good bit of tread left. They are quieter and better traction too.

Just out of curiosity, where in SC?

I got this code this morning and also noticed the hard shifts. Taking it in in a couple days.

Mine has failed this week at 54,000 miles. I had it in for Stabilitrak issues on Monday and they mentioned that it appeared that the condenser had been leaking. It was cool so I didn't need AC until yesterday. It is blowing warm air now.

Sensors replaced. Problem fixed.

Dealer is replacing the sensors. I hope it fixes it.

No trailer hitch.

Has anyone experienced issues with the rear parking sensors? Mine began giving an error message saying that "Park Assist Blocked" when there was nothing within range of the sensors. It also gave a message of Parking symbols unavailable and began giving false positives that there was something i was about to back into. I took to dealer, first time and they said chaffed wiring. Took back second time and they replaced the controller for the system. I have it in the third time because I get no indication that I am close to anything at all. They still have the vehicle and their last update was that it was a range issue but they weren't sure how to adjust the range of the system.