We just ordered a Cajun Red Tintcoat High Country last week. We saw the color on a 1LT and decided that was the color we wanted! Based on what the local dealers told us this is what I found out:
1) What have people been getting for discounts on 2018 Traverses?
The dealer we ordered through is a high volume dealer. We will pay "Invoice" for our Traverse, that can mean a lot of things,

but it is over $4,000 off MSRP in this case. Plus $1,000 a dealer military discount, plus there is a $750 package discount. All added up it is about $6,000 off the as built sticker price of $54,495. That is about 9% off before we get serious about negotiating when it arrives. I may use USAA's car buying service if that works out better price wise.
2) How long after you place an order does the car get to the dealer?
We looked at Chevy, GMC, and Buick variants and all of the dealers said 8 to 12 weeks average. We just missed last weeks allocation so our order goes in this Thursday. There is a 2 week down time at Christmas that can impact that estimate.
3) I need the car in April, so when would be the best time to order to get the best price? Should I order at the end of a month or at the end of the year, or possibly wait for February sales events?
I'd order around 10-12 weeks out.
Regarding sales events and GM Rebates they are normally based on the day you
purchase the car, not the date you order it. So if there had been a rebate in effect last Thursday, that isn't still offered when we actually purchase, we would loose it. But if there is a new rebate on the day we purchase it, that wasn't offered when we ordered it, we will get that rebate. Also special pricing and rebates are often limited to dealer stock "on hand" during the big sales events. I suggest checking with your local dealer and make sure this is all correct...
Note: This may be a duplicate post. I tried posting a response here earlier and saw an error message about needing Mod approval. If the first response appears I apologize for the duplication.
Regards,