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Prev Professional Automotive Repair Technical Discussions for October 23, 2013
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Open Help Requests for GM
Help Request Answers
2011 Buick Enclave CXL 3.6L Cooling Systems VIN: 5GAKVBEDXB
I know there are common water pump leaks on this vehicle but I cannot see it. What am I missing?
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1995 Chevrolet Tahoe LS 5.7L Hesitation, Cuts out VIN: 1GNEK13K2S
Vehicle runs good at idle and off idle. Will run good the first 2-3 miles after cold start, then will have a hesitation/ bog between 1/2 and 3/4 throttle. Fuel trims and o2 showing rich when problem occurs. Fuel pressure stays high, over 20 psi, even after rep... Trouble codes: 45 (Rich exhaust)
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1996 Chevrolet K1500 Suburban 5.7L airbag/derm VIN: 3GNFK16R5T
we replaced the derm on this truck after performing diag. for codes 55,61 and 71. checked ground and power circuits and found to be ok. the sir light blinks 6 times with koeo, light is on solid when stating and light blinks 7 times after engine starts. this is...
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2005 Chevrolet Equinox LT 3.4L Brake Lamps VIN: 2CNDL73F55
Customer concern was for cruise control intermittently inoperative. Found brake lamps on whenever key is in "run." Disconnected stop lamp switch, found lamps still on. Found good power on CKT 540, red & white wire at stop lamp switch, also found battery voltag...
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2008 Chevrolet Silverado 1500 LT 5.3L Misfire
I have a miss fire in cly number 1 ran a comp test it was 150 when cranking over it was shooting gas out the comp.tester I did some reading on other post and found to have a lifter problem so we pulled the head off and replaced all 4 lifters on 1&7 had the hea... Trouble codes: P0300
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2001 GMC Sierra 3500 SL 8.1L MIL Lamp on VIN: 3GDKC34G11
I have this truck belongs to city street department. Cust complaint hard start intermittently, but more noticeable when hot. Got the condition to duplicate, sounded like timing way off. Ran camshaft 1X signal at PCM pin 73 (brn/wht) and started with a good 12 ... Trouble codes: P0341 (Cam position sensor signal out of range), P0342 (Cam position sensor signal low), P0343 (Cam position sensor signal high)
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2003 GMC C6500 Topkick C6C042 8.1L No Start VIN: 1GDJ6J1EX3
Sorry for this long post. Truck towed in and would not start. Both tanks empty but guage read full. Put fuel in left fuel tank and engine started. Drained left tank and put fuel in rt tank. Guage read 1/2. Disconected sending unit from rt tank still read 1/2. ...
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2005 GMC Yukon Denali 6.0L MIL Lamp on VIN: 1GKEK63U75
this one is killing me. Sets a p0455 ,i have checked for evap leks and have found none. I saw on the scan tool that the fuel tank pressure is 15.33 in of h20. We pulled the tank down and did a vissual inspection of wiring and installed a fuel pressure sensor, ... Trouble codes: P0455 (Evap leak)
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Fixes & Summaries for GM
Fix/Summary Answers
2007 Buick LaCrosse CX 3.8L Compressor VIN: 2G4WC58247
WELL GUYS THANKS FOR THE HELP. CHECKED CLUTCH AIR GAP WAS IN SPECS. DROVE CAR SEVERAL DAYS NEVER WAS ABLE TO DUPLICATE THE PROBLEM. WIGGLE TEST WIRES AND CHECKED RELAYS AND CONTACTS NEVER LOCATED A PROBLEM. RELEASED TO CUSTOMER AND INSTRUCTED THEM TO BRING VEH...
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1988 Chevrolet Caprice 4.3L Ecm VIN: 1G1BL51Z3J
Thank you to everyone who replied. After much searching I stumbled accross this website... Listed are all the original applications for the service numbers along with all the YMM applications, all the PROM...
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2005 Chevrolet Silverado 2500 HD 6.6L power steering VIN: 1GCHK232X5
Im considering this truck fixed, after the reman parts did not help the issue and actually made it a little worse we decided to install new gm pump, hydroboost and box. Also tightened the nut on the flow/pressure valve to raise the pump pressure. After that th...
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2006 Chevrolet Silverado 1500 LS 4.3L turn signal VIN: 3GCEC14XX6
found voltage drop between ign. e fuse and turn switch.this fleet truck had a wire spliced into the pink wire going to a after market starter relay for an axillary battery .I rewired it to axillary box.. Clocked 3 hours not .3 Thanks for all Replies i can te...
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2011 Chevrolet Express 3500 4.8L chimsl (3rd stop lamp) VIN: 1GB0G2BA5B
Unfortunately, no one had a diagram that differed from mine. I am not sure why the vehicle did not match the diagrams but it certainly was different. So, I just winged it by checking each wire from end to end with an Ohm meter. Finally determined that the BCM ...
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