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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for January 21, 2021
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Open Help Requests for GM
Help Request Answers
2007 Chevrolet Silverado 2500 HD WT 6.0L MIL Lamp on VIN: 1GCHK24K67
This one has me stumped at the moment. The fuel trims go positive when accelerating and at idle all is well. The O2's drop to 0 on acceleration. It appeared to be fuel delivery issue but now it has a new fuel pump assembly, good volume and pressure. The MA... Trouble codes: P0171 (Lean bank 1), P0174 (Lean bank 2)
2009 Chevrolet Impala LT 3.9L Hesitation, Surge, MIL Lamp on VIN: 2G1WC57M59
2009 impala 3.9 surges at idle and while driving will stumble with codes for maf and tps issues p0101 p0121 p1101 and running rich p0172. Air filter housing was not attached so air was bypassing filter. Maf and honeycomb were dirty and appeared to have bee... Trouble codes: P0101 (p1101-), P1101 (p0121-), P0121 (p0172-), P0172

Fixes & Summaries for GM
Fix/Summary Answers
2009 Chevrolet Colorado LT 5.3L comm. line VIN: 1GCDT13L09
CRITTERS!!! Lol i hate em. got new module and same thing. got to testing again and found intermittent ground at my transfer case shift module. grounds at right front fender. look up by where it grounds behind air box and lots of chewed up wires. got them all f...
2011 Chevrolet Silverado 1500 LTZ 6.2L xm VIN: 3GCPKTE28B
Fixed ! how to say I missed an dot over an I, maybe didn't cross a T. I had the radio module under the dash still unplugged , it was the xm module . funny how things work much better when they're plugged in . Sorry all I screwed it up
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