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Prev Professional Automotive Repair Technical Discussions for April 29, 2014
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Open Help Requests for GM
Help Request Answers
1999 Cadillac Seville SLS 4.6L oil level VIN: 1G6KS54YXX
I have a 1999 (vin X) Cadillac Seville SLS with northstar 4.9 (vin Y), owner stated it was 2 quarts low on oil, he filled it and drove it for aprox 250 miles and it was 2 quarts low again. Oil leak from around "rear main" by his description. when we got it the...
2006 Cadillac SRX 3.6L Numerous codes VIN: 1GYEE637X6
This vehicle came in on 02/11/14 (mileage 80310) with the following complaint traction control light came on and now vehicle is hard to turn, also a grinding when idling. Grinding noise was coming from the bearing in the bracket for the cooling fan. Performed ... Trouble codes: P0318 (Rough Road sensor circuit), P1629 (Theft Deterrent Fuel Enable Signal Not Received), U1040 (No Communications EBCM), U1064 (No Communication DIM), U1153 (No Communication Climate control), U1192 (No Communication Theft deterant)
1994 Chevrolet K1500 5.7L Poor Idle Quality, Hesitation, Surge, Stall VIN: 2GCEK19K9R
hey guys this pickup came into my shop with a complaint that it lopes and surges at idle and will die shortly thereafter. it was in a shop about a month ago for a new GM crate engine due to excessive oil consumption. it shows no codes. the list of new parts th...
2005 Chevrolet Silverado 2500 HD 6.6L Temperature Gauge VIN: 1GCHK29265
Customer complained of dash gauge and driver information center shows engine overheating. Coolant level and condition looks good. All fluids under hood checked OK. Engine did not appear to be overheating, but dash gauge and driver information center indicated ...
2007 Chevrolet Colorado LT 3.7L ignition VIN: 1GCCS13E07
Car came in a tow truck customer says he had another mechanic try to fix wiper speed not working properly by the time he din't figure it out the truck came to me with a no crank condition. Replaced ign. Switch,bcm and Ecm they had clear burnt marks, had someon...
2008 Chevrolet Colorado LS 3.7L ABS/traction control VIN: 1GBDS14E28
Hello people. Thanks in advance for any tips..These rigs have been out for years and somehow I have never had the honor? of working on one till now..This vehicle came in originally as a simple parts replacement job. Customer wanted front hubs/sensors, and pads...

Fixes & Summaries for GM
Fix/Summary Answers
2002 Pontiac Grand Prix GT 3.8L Stall VIN: 1G2WP52K82
This one is finally fixed. Turned out many of you were right with the MAP sensor. It was functioning so it wouldn't set a code but it was lying to the PCM with bad info at higher speeds. Replaced MAP with ACDelco and all is well. Thanks for all the insight... Trouble codes: P0101 (Mass air flow circuit out of range).
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