Im still having problems with my truck, no instruments
work and takes off like if its in 3rd gear. I think no power to trans , i have looked at every fuse and wires possibe, got new tc,tranny and even changed out $200 ign. swith that did no good for me. anbody got any ideas of what to check.
99 ECSB 5.3 LS6 CAM AND SOME BOLT-ONS BEST TIME 13.6@97MPH
http://i104.photobucket.com/albums/m...wTRUCKS008.jpg
Sounds like time for a trip to the stealership. Maybe the body control module is out or you lost ground to the body from the engine/chassis. Normally the PCM would tell the transmission what gear to be in via the shift selector and speedometer pickup on the transmission. Check that your brake lights are working properly. Also, look around for signs of mice. Pesky little buggars will chew your wiring up as bad as squirrels. What was the last thing you did to the truck prior to the malfunctions?
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
<div class='quotetop'>QUOTE(RedHeartbeat @ Nov 15 2006, 12:38 AM) [snapback]73623[/snapback]</div>I have been thinking about taking to the dealer, but im afraid there gonna charge me an arm and a leg. Do you think they can screww up my tune?Sounds like time for a trip to the stealership. Maybe the body control module is out or you lost ground to the body from the engine/chassis. Normally the PCM would tell the transmission what gear to be in via the shift selector and speedometer pickup on the transmission. Check that your brake lights are working properly. Also, look around for signs of mice. Pesky little buggars will chew your wiring up as bad as squirrels. What was the last thing you did to the truck prior to the malfunctions?
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99 ECSB 5.3 LS6 CAM AND SOME BOLT-ONS BEST TIME 13.6@97MPH
http://i104.photobucket.com/albums/m...wTRUCKS008.jpg
If they do just get a new one. A lot of times they check your VIN for updates and think they're doing you a favor by updating the tune. Duct tape over the OBDII connector and put a note on it not to reflash the PCM.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
I know this sounds off the wall but a faulty ignition switch can do just that. The 99-02 switches are notorious for screwing up and causing gauge and shifting problems.
If you read on the Avalanche pages, there is story after story of simular problems with the '02's (the first yeat for the Avalanche).
It's worth trying.
2011 Silverado LT 5.3 bone stock(for now)
(gone but not forgotten)02 Avalanche Z-71 Vortech supercharged 3.12 pulley 10psi, SMC meth injection, 33 12.50-17 procomp AT, 17x9 procomp wheels, AVIC-N2 NAV, 4.56 gears, Detroit TrueTrac, 2500 stall converter, transgo HD2 shift kit, Vette servos, 80mm BBK throttle body, Edelbrock shortie headers Cold Fusion wet shot (60hp), and too many more mods to list. 8.86/18th 472rwhp/499rwtq
<div class='quotetop'>QUOTE(KY_BOB @ Nov 15 2006, 10:44 PM) [snapback]73710[/snapback]</div>[\thanx for reply , I changed the ign. switch, but didnt helpI know this sounds off the wall but a faulty ignition switch can do just that. The 99-02 switches are notorious for screwing up and causing gauge and shifting problems.
If you read on the Avalanche pages, there is story after story of simular problems with the '02's (the first yeat for the Avalanche).
It's worth trying.
[/b]
99 ECSB 5.3 LS6 CAM AND SOME BOLT-ONS BEST TIME 13.6@97MPH
http://i104.photobucket.com/albums/m...wTRUCKS008.jpg
Not sure about the cluster issue. Is the trans problem seperate from the cluster problem (meaning do they occur simultaneously or not)? When I did my swap, I overlooked a lead that gives the trans power, thus only giving me 3rd gear (unless manually shifting). I traced my wires back to the fuse block to find that I needed to jump onto a 12V switched source. Seems like too simple of a solution, but check your power at the underhood fuse block. You may be lacking power that distributes to multiple places. Just a suggestion... but, the switch leads (or a connector) may be loose b/t the switch and the fuse block. I'd grab a multimeter, and go probing points in between. Or, a bad BCM could be the culprit. Would have to look at service manual's diags when I get home tho.
Good luck.
5.3L '86 Silverado (E/T: 14.37s @ 94mph) - First Time Out!Test-n-Tune (Nov 23, 2008) - 13.65s @ 98mph
<div class='quotetop'>QUOTE(adrenalinep @ Nov 16 2006, 11:34 PM) [snapback]73767[/snapback]</div>I'm sorry for the bad advice.[\thanx for reply , I changed the ign. switch, but didnt help
[/b]I would have bet money on that.
2011 Silverado LT 5.3 bone stock
(gone but not forgotten)02 Avalanche Z-71 Vortech supercharged 3.12 pulley 10psi, SMC meth injection, 33 12.50-17 procomp AT, 17x9 procomp wheels, AVIC-N2 NAV, 4.56 gears, Detroit TrueTrac, 2500 stall converter, transgo HD2 shift kit, Vette servos, 80mm BBK throttle body, Edelbrock shortie headers Cold Fusion wet shot (60hp), and too many more mods to list. 8.86/18th 472rwhp/499rwtq
<div class='quotetop'>QUOTE(KY_BOB @ Nov 17 2006, 01:25 PM) [snapback]73793[/snapback]</div>unless I installed wrong, Thats the reason I changed it, a few guys from pt.net swore it was the ign. switchI'm sorry for the bad advice.
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99 ECSB 5.3 LS6 CAM AND SOME BOLT-ONS BEST TIME 13.6@97MPH
http://i104.photobucket.com/albums/m...wTRUCKS008.jpg
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