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Prev Professional Automotive Repair Technical Discussions for February 28, 2012
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Open Help Requests for GM
Help Request Answers
2000 Buick LeSabre Custom 3.8L Front end VIN: 1G4HP54K9Y
Vehicle came in for abs light on and shaking only during acceleration. We replaced the rf wheel speed sensor for the light which fixed it. We found a large amount of play in the rf cv shaft so we replaced that. Still shakes. IMPORTANT: It only shakes under acc...
2006 Buick LaCrosse CXL 3.8L traction con VIN: 2G4WD58256
hi guys i have a 2006 buick lacrosse that the traction control active message comes on while going down highway and no accel. at all turn traction control off with switch and accelerates fine there is no codes in any computers and watch wheel speed sensors on ...
2005 Chevrolet Colorado Z85 LS 3.5L abs sensor VIN: 1GCDS13625
truck came in with c0040 right front speed sensor circuit replacd hub and sensor together lowered truck off lift now have code c0040 and c0035 left and right circuit truck will not even move and light resets imediately have also changed the abs module or ebcm ...
2007 Chevrolet Equinox LT 3.4L starter VIN: 2CNDL63F27
had to jump start to get here, has been here for 2 days with no problems. Customer also states that intermittantly he hears the turn signals thru the radio. of course not acting up for me. has any one ran into this that can help me out? thanks in advance
1993 GMC C2500 Suburban 7.4L Cuts out VIN: 1GKGC26N8P
falls off at fuel throttle and slight back fire,lift slightly and runs better,has new tune up all ign parts,fuel injecters and pump and reg kit,egr plugged,new map and tps,intake new and gask,vehicle has had converters romoved and 2.5 dual exhaust installed pr...
2007 GMC C5500 Topkick C5U042 6.6L map sensor VIN: 1GDE5C1257
Hello Medium-duty techs, Our Duramax equipped Topkick has recurring oil in the intake tract. The truck was taken to our local med duty dealer (if that's what if you want to call them) They replaced the turbo and at my request, cleaned the intake and intercool...
2002 Saturn SC2 1.9L abs VIN: 1G8ZY12762
Vehicle came in with the ABS light on. Code for left front sensor, found the reluctor ring on the axle cracked. Replaced with reman axle and new aftermarket sensor. ABS light is off, NOW the ABS pump engages (cycles) constantly when the brake is applied reguar...
2003 Saturn L300 3.0L MIL Lamp on VIN: 1G8JW54R43
Hi all. Thanks for any help you might be able to give. This one came to us a few weeks ago about a tranny comcern. While running the car ont the rack, I noticed it was leaking fuel from the top of the tank. Turns out the return nipple was split. It had a p0174... Trouble codes: P0174 (Bank 2 lean), P1811 (Trans shift adapt max)

Fixes & Summaries for GM
Fix/Summary Answers
1998 Chevrolet C1500 Cheyenne 4.3L Stall VIN: 1GCEC14W0W
Decided to pursue the non communication with scanner issue first, In testing the DLC circuits realized the ABS EBCM was creating "Noise" on the serial data line preventing communication. Unplugged the ECBM and data line cleared, communication was available aft...
2009 Chevrolet Impala LS 3.5L rear defogger VIN: 2G1WB57K99
Thank you so much for all the great replies.It was the large 40 pin x200 connector.It was burnt at the pin like so many said. Run new wire past connector as it was burnt too bad to replace terminal. Thanks again
2001 Pontiac Grand Prix GT 3.8L No Start, Stall VIN: 1G2WP12K41
Hello all, thanks again for all the help. Great responses from everyone. Most people said to swap the crank sensor. I checked the wiring from the crank sensor as far as I could and did not find any place where the wires where bad. One response also commented o... Trouble codes: P0141, P0327, P0332, P0336, P0650.
2004 Pontiac Grand Prix GT1 3.8L No Start, Cuts out, Stall VIN: 2G2WP52294
Well, this one is finally fixed, all of the suggestions were helpful, however I changed the approach to fix this one. I ended up disconnecting each sensor 1 by one until I affected the issue since it failed everytime you drove it. By process of elimination the...
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