2003 Avalanche throwing codes immediately after transmission rebuild.

Asked by nalakitten21 May 21, 2015 at 12:47 PM about the 2003 Chevrolet Avalanche 1500 4WD

Question type: Maintenance & Repair

I picked my truck up from having transmission rebuilt 3 days ago. Before taking it in it
ran fine except it wouldn't go into 3rd or 4th gear. Got it back, and now it is running
rough especially in idle. Ran a check on engine light and throwing codes: U1000,
P0151, P0300, P0449, and B0041 (not new... airbag something or other). Could any of
these be related to having the transmission work done? Where and how should I start
in trying to correct these issues? Thanks in advance.

1 Answer

1,545

I think that I had the O2 (P0151) and Emissions (P0449) on my 2009 Chevy Avalanche, last year. Everything was fine and then one day, I couldn't get out of 3rd gear (red line & still topped out at 40 - 45 mph). For me, they didn't have to rebuild my transmission, but they did have to replace the emissions solenoid and did a complete transmission fluid flush (drain, flush & refill w/clean fluid). Being that it wasn't throwing codes before the rebuild, you might want to ask them to take another look to make sure that there are no fluid leaks, you have all your fluid, no vacuum leaks. But, I know for my truck, it took the shop's senior mechanic a couple days of digging to find out how to correct those code issues; I'm not sure if a Chevy Dealership's maintenance department would be better suited for that type of work or if they'd have the same issues. Here's what I found on those codes (my apologies if this is redundant information) --- U1000 - http://www.aboutautomobile.com/TSB/2003/Chevrolet/Avalanche/Transfer+Case (4WD / Transfer Case) | P0151 - http://www.aboutautomobile.com/DTC/P0151 (O2 Sensor) | P0300 - http://www.aboutautomobile.com/DTC/P0300 (Cylinder Misfire) | P0449 - http://www.aboutautomobile.com/DTC/P0449 (Emissions Solenoid)

Your Answer:

CarGurus Experts

  • #1
    sverden
    Reputation
    1,220
  • #2
    Mark Weiner
    Reputation
    570
  • #3
    GuruLW9BX
    Reputation
    530
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 1500
213 Great Deals out of 9,034 listings starting at $2,900
Used Chevrolet Tahoe
18 Great Deals out of 859 listings starting at $9,980
Used Cadillac Escalade EXT
4 listings starting at $12,995
Used Ford F-150
343 Great Deals out of 12,723 listings starting at $599
Used GMC Sierra 1500
188 Great Deals out of 8,956 listings starting at $1,000
Used Dodge RAM 1500
86 listings starting at $7,995
Used Chevrolet Colorado
29 Great Deals out of 1,136 listings starting at $9,950
Used Chevrolet Suburban
13 Great Deals out of 509 listings starting at $11,950
Used GMC Yukon
15 Great Deals out of 936 listings starting at $5,998
Used Toyota Tundra
33 Great Deals out of 988 listings starting at $9,240
Used Chevrolet Silverado 2500HD
34 Great Deals out of 1,782 listings starting at $1,000
Used Cadillac Escalade
19 Great Deals out of 534 listings starting at $1,000
Used Chevrolet Camaro
19 Great Deals out of 513 listings starting at $11,500
Used Toyota Tacoma
43 Great Deals out of 682 listings starting at $9,975

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.