Back from the dead 2007 Tahoe 2wd LT

[Rocket Man]

So I have been driving this thing around to make sure the bugs are worked out and it was only getting 13.2 mpg. I cleaned the MAF, re-set the fuel trim learning, alcohol content, and did a crank re-learn. I have a diablosport i3 sitting around that we use in my shop when we install new GM engines with DOD delete, so I loaded a basic tune. One of my techs is an experienced tuner but we'll save that for future mods. The factory re-learns and canned tune are now netting 15.6 mpg so I'm very happy. I also have a new MAF and both upstream o2's for it but I'm not sure they'll be needed.

I have all of the lowering stuff. I'm using Belltech 2511 2" spindles, McGaughy's 3180 adjustable struts, Belltech 34324 rear spring kit, and new AC Delco strut mounts. I got the adjustable struts because my front struts are original and I'm going for a 2.5/4 drop so I wanted that extra 1/2" adjustment. I am debating whether this would be a good time to replace the front wheel bearings and brakes all around.

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Looking forward to seeing it lowered. Good choice on the components.

 

[pwtr02ss]

Nice work Leevon! Glad to hear you're doing well. I was wondering why the updates had suddenly stopped.

 

[Leevon]

The rear speakers were shot, so I installed four new door speakers. I found an inexpensive kit on Ebay that included the mounts and harness adapters (I'm lazy) and they're nothing special. They don't sound great, assuming the head unit doesn't have enough juice so I'm upgrading that soon. For now I'm going to try some speaker baffles and see if that gives them any more punch. I cleaned up the door panels while they were off, and will be replacing the outside door handles also.

 

[kbuskill]

The rear speakers were shot, so I installed four new door speakers. I found an inexpensive kit on Ebay that included the mounts and harness adapters (I'm lazy). They're nothing special. They also don't sound great right now, so I'm adding baffles behind the speakers and upgrading the stereo soon. I cleaned up the door panels while they were off, and will be replacing the outside door handles also.

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Does the truck have the Bose system???

 

[Leevon]

Does the truck have the Bose system???

Non-Bose. Here are the speaker specs, thinking the factory unit just doesn't have enough juice? They're tinny and distant sounding, hardly any bass

JBL GT76 6.5 INCH 2 WAY CAR Truck Front & Rear Door Speakers W/Install Kits

6-1/2" 2-way speakers (pair)
polypropylene Plus One™ woofer cone with foam surround
balanced dome PEI tweeter
power range: 2-45 watts RMS (135 watts peak power)
frequency response: 55-20,000 Hz
sensitivity: 93 dB
top-mount depth: 2-3/8"

 

[kbuskill]

Non-Bose. Here are the speaker specs, thinking the factory unit just doesn't have enough juice? They're tinny and distant sounding, hardly any bass

JBL GT76 6.5 INCH 2 WAY CAR Truck Front & Rear Door Speakers W/Install Kits

6-1/2" 2-way speakers (pair)
polypropylene Plus One™ woofer cone with foam surround
balanced dome PEI tweeter
power range: 2-45 watts RMS (135 watts peak power)
frequency response: 55-20,000 Hz
sensitivity: 93 dB
top-mount depth: 2-3/8"

New HU will definitely wake them up.

 

[Rocket Man]

Non-Bose. Here are the speaker specs, thinking the factory unit just doesn't have enough juice? They're tinny and distant sounding, hardly any bass

JBL GT76 6.5 INCH 2 WAY CAR Truck Front & Rear Door Speakers W/Install Kits

6-1/2" 2-way speakers (pair)
polypropylene Plus One™ woofer cone with foam surround
balanced dome PEI tweeter
power range: 2-45 watts RMS (135 watts peak power)
frequency response: 55-20,000 Hz
sensitivity: 93 dB
top-mount depth: 2-3/8"

If you have a dvm, measure the impedance (ohms) of the old ones and compare to the new ones. I know the Bose are 2 ohm and if you put in a 4 ohm they’re quiet. Not sure what impedance your old ones were since they’re not Bose. Those JBL are 4 ohm.

 

[Leevon]

If you have a dvm, measure the impedance (ohms) of the old ones and compare to the new ones. I know the Bose are 2 ohm and if you put in a 4 ohm they’re quiet. Not sure what impedance your old ones were since they’re not Bose. Those JBL are 4 ohm.

I assumed the factory speakers were 2 ohm but research says the non-Bose are 4 ohm so should be good. But I don't think the stock radio has much more than 15 watts per channel or so. New head unit on the way anyways. Ordered one of the Chinese Eonon units. I had second thoughts and tried to cancel but China's not listening so we'll see how well it works lol.

 

[Leevon]

While I had the door panels off I replaced the handles with the NOS ones I found on Ebay. The old handles were really ugly and all four were peeling, scratched, etc. I don't know what was all over these peoples nasty hands but it ate everything they touched. This might sound crazy but depending on how far I go with this thing it may get torn down later for complete paint. My friend has a high end restoration shop about a mile away, it won't be crazy expensive if I do the R&R and prep then have him shoot it.

 

[Leevon]

Had to drop back and take care of one last mechanical issue because I ran out of time last round. The rear main seal, so now zero leaks. Drove her around all weekend, loaded down with people, she's doing great!