Hi Everybody

Has anybody done a 4.2 Liter Denali, it run with drive by wire throttle body. I will grooving one tomorrow so if there is anything I should know before hand that just might come in handy.

Thanks Aaron

Hi Aaron!

Are you sure it is a 4.2L? The Denali came with a V8, probably a 5.3 or 6.0. The GMC Envoy came with the 4.2L Inline 6.

If it is the Envoy, I have not done one yet, but hopefully soon. Use the business card folded in half to position the throttle plate, unless you have a scan tool to determine throttle position at start-up.

I do have to work tomorrow at the dealership, so if I come across a similar engine, I will observe vac lines.

By the way, gas prices just hit $4.00 here. The time is right for the Groove!

Hi Scott

Just got a hold of the customer and he said it supposed to be a denali and it says denali on the side of fender but he is pretty sure it an envoy, denali's didn't get produced until 2005. It is an 02 gmc envoy 4.2L thanks for the heads up Scott. And fuel prices here are around $1.28 per liter, some folks around here are saying it's going to hit $1.50 this summer.

Aaron

I just LOVE Wikipedia! It is so useful in issues like this. Here's what's posted on Wkipedia on the GMC Denali (excerpt)
"The Denali nameplate started as the top-of-the-line version of the GMC Yukon for the 1999 model year. It was also GM's first attempt to cannibalize sales from the new-for-1998 Lincoln Navigator. At the time of it's introduction General Motors decided to give Cadillac its own luxury SUV so the Denali's exterior was shared with the 1999 Cadillac Escalade, with only the front fascia and lower side body panels differing from the standard Yukon. Even though the Yukon was redesigned alongside the Chevrolet Suburban and Chevrolet Tahoe in 2000, the Denali and Escalade retained their 1990s base design."



(From Google Images)

So, the Denali actually started in '99 as a spin on the Yukon, and carries on today.

Hi Folks

This is a disppointing Envoy, I remove throttle body from air intake manifold (very easy to get to) and discovered the throttle plate is right at the edge of housing that bolt to the manifold there's nothing there to run the groove in let alone using the business card for a spacer, so I put her back together let customer know it couldn't be done due to design but there may be a possible solution for this throttle body. I will post pics. later.

Aaron

Can you take a picture with the throttle body turned 180 degrees as it looks alot like the 6.2 L I did last week and there was just enough room for the middle size bit. Remember the idle air pos on the butterfly is about where it sets with no voltage applied. Look close as at first it looks like there is no room but I had just enough room it will take a steady hand when applying the groove as it is paper thin at the edge. Dan gadgetman Mo.