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Prev Professional Automotive Repair Technical Discussions for October 4, 2013
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Open Help Requests for GM
Help Request Answers
1989 Chevrolet R1500 Suburban Scottsdale 5.7L Engine VIN: 1GCER16K9K
Good morning. I needing some help with a egine that is runnng very bad. It stumbles and surges under a slight load to the point it well not gain any road speed, if you run the thortle to the floor mat it will take off and run. If we unplug the alternator it wi...
2002 Chevrolet S10 4.3L Mode door VIN: 1GCCS19W22
My customer brought his truck in complaining that heat was coming through the heat & defroster vents when the truck was going down the road even with the unit turned off.I replaced the air door actuator,no change.I checked the mode door & air mixer pods & they...
2005 Chevrolet Malibu LS 3.5L communication VIN: 1G1ZT52875
Vehicle towed in as no crank, no start. test battery pass. Security light on dash on any time key is on. retrieve codes in body control module and p/s module. U2108 U2109 and U2100 retrieved. Confirm no comm. with ebcm or pcm. Clear codes and same codes return...

Fixes & Summaries for GM
Fix/Summary Answers
1992 Chevrolet K3500 Cheyenne 5.7L shifting VIN: 1GBJK34K6N
Thanks to Peter-Craig-Jerry and Marsden all of you sent us on the right path. It ended up being the wiring harness which we replaced and it straighten the transmission up. Behind the story is the owner said this was a 1994 truck, after putting in the vin for t...
2003 Chevrolet Tahoe LT 5.3L temp/blend door VIN: 1GNEK13ZX3
veichle is fixed !!! thanks for all your replies.doug,doug,and bill hit it right on the money.found interior temp on scan tool and it read 147.degrees.(how did i miss that). I guess frustration is a factor.removed aspirator and was covered with dirt on temp se...
2005 Chevrolet C4500 Kodiak C4U042 6.6L Various VIN: 1GBE4C12X5
Thank you for all who replied. Vehicle is finally fixed. We found a power wire from the alternator to the started hanging on by a few strands. After fixing that, operating voltage returned to normal. We then went through everthing related to the low coolant le...
2007 Chevrolet Silverado 3500 Classic LS 6.6L Excessive Emissions VIN: 1GCHC33D47
injectors list 615. sell was 430 from gm. i didnt look for the best deal. i bought 2. replaced #6 and #8. everything is ok except now #7 shows +7 max balance when all others were negative. smoked a little when warm. replaced fuel filter, filled with marvel m...
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