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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for January 18, 2013
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Open Help Requests for GM
Help Request Answers
1999 Cadillac Escalade 5.7L turning VIN: 1GYEK13R2X
when turning sharp either left or right vehicle feels like its binding not a crow hop but an actual bind steering stops look ok
1997 Chevrolet K1500 5.7L Rear Brakes VIN: 1GCEK14R8V
Brake pedal goes to the floor. We can run the truck in the air in gear and can not make the rear wheels stop until the pedal hits the floor with quite a lot of pressure. Repair history since this vehicle came into our shop about a month ago. Replaced master c...
2000 Chevrolet C2500 5.7L cng system VIN: 1GCGC24R2Y
2000 chevy c2500 with dual fuel cng/gas .Truck starts and idles on cng as soon as I accelerate past 1100 rpms it switches over to gas. Iv read the manual on the cng system,so Im familiar with the system.The fuel switch light dosent come on at all. I did replac...
2004 Chevrolet Express 2500 4.8L No Start VIN: 1GCGG25V74
Hi & thank you for taking time to look at this request for help. Vehicle was towed to shop. Concern stated to us was the dash warning lights go on & off. Vehicle will crank over but will not start. Visual inspection of vehicle found no SES light when key was o... Trouble codes: B0951 (Headlight on indicator), B2625 (Display driving pwm output circuit malfuntion), U1016 (Lost communication with engine control module), U1096 (Lost com with driver imformation display), U1041 (Loss of comunication ebcm), U1000 (Loss of class 2 serial communication)
2007 Chevrolet Impala LTZ 3.9L High idle VIN: 2G1WU58R77
Okay G.M. guys. Customer complaint check engine light and engine surge. We noticed that idle will climb to 2,200 rpm if! you touch the gas pedal. Bring it down by shifting into drive while holding your foot on the brake. Cleaned throttle, performed idle relear... Trouble codes: P0121 (p2119-), P2119
2008 Chevrolet Aveo LS 1.6L oil pressure VIN: KL1TD66668
After driving about 10 miles the oil pressure light comes on and the engine gets noisey,checked the oil and it was low, let it sit and cool and the oil came up, let cool down,noise goes away until driven again, we have cleaned the top end and cleaned the oil p...
1996 Geo Tracker 1.6L Poor Idle Quality VIN: 2CNBJ1865T
Vehicle was towed in . Had to crank several times to start,had low fuel pressure. Pulled tank to replace pump, but found hole in hose to pump .replaced hose.vehicle hadn't been driven for 1 1/2 yrs . Drained old gas added new gas installed tank. Starts on firs...
2002 GMC Sierra 2500 SL 6.0L Hesitation, Misfire, MIL Lamp on VIN: 1GTGK29U22
when it acts up ,running rough ,misfiring, there is about 9 volts @ the 5volt reference wire from pcm to tps.Note (this is a throttle cable truck not fly by wire).When tps is disconnected it straigtens out and doesnt act up.I've traced the wire back to pcm,and... Trouble codes: P0122 (Tp/app sensor 1 circuit open/short.), P0332 (Knock sensor2 signal short/low.), P1122 (Tp circuit intermittent low voltage.), P1639 (5v reference bor tcm a/d fault.)
2003 GMC Sierra 3500 SLE 6.6L oil pressure VIN: 1GTJK33103
The truck came in they say it has low oil pressure looked at the gauges shows low oil pressure on the cluster .I pulled the sending unit out hooked up a master gauge found to have 45 psi when cold drops below 14 at idle when warm the spec is 14 when warm it ha...
2005 GMC C5500 Topkick C5C042 6.6L MIL Lamp on VIN: 1GDE5C32X5
My mitchell is quite limited and I am going off of a cab and chassis as closest description with a 6.6L AS mentioned this is a Medium duty GMC TOPkick 5500 that I am not well versed on. This truck belongs to my brother who just got bent over for an $1800 rea... Trouble codes: P0046
2006 GMC W4500 Forward W4S042 5.2L Hesitation, Cuts out, Stall, Misfire, no throttle response VIN: J8DC4B1677
Thank you for taking the time to help me here. I don't do a lot of diesel work but this is a really good customer and I need to help him. The truck was purchased at auction in June of 2012 and has run pretty well for the 15K miles since the purchase. It has ha... Trouble codes: P0301, P0303

Fixes & Summaries for GM
Fix/Summary Answers
2004 Buick Regal LS 3.8L turn lever VIN: 2G4WB52K64
To all of the 33 replies that I received thank you very much.. the ignition switch was the fix.. Most of you were right. I appreciate ALL the requests though because it gives me more information to look ahead on other possibilities in the future. Thanks agai...
2007 Cadillac Escalade 6.2L Poor Idle Quality VIN: 1GYFK63807
2000 Chevrolet Corvette 5.7L Hesitation, Cuts out VIN: 1G1YY22G1Y
Thank you for all the help guys. This vehicle ended up having a traction control issue. I was able to narrow it down to being a probable EBTCM. The module had good power and good ground, tested with a headlight. All the inputs were consistant with known good. ...
2006 Chevrolet Impala SS 5.3L Stall VIN: 2G1WD58C16
Thanks everyone for your thoughts. Discussed situation with owner, explained that ecm may not be needed. He decided to go with new ecm on dealer advice. Myself next time if a weak battery was involved I think a reprogram will cure. Thanks again for all your gr... Trouble codes: P0601.
2007 GMC W4500 Forward W4S042 5.2L Stall, power loss VIN: J8DC4B1677
I need to close this request because the problem is not fuel related. It is a temperature alarm that goes off, not water in fuel alarm as the customer stated. It has progressively gotten worse and now will only run for about 2 minutes before shutting the engin...
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