Problem: Explain your problem in concise language (ie: Cranks but won’t fire). ___Thought ti was a transmission issue do to shifting funny. The real issue caused the transmission issue._________The Suburban is cutting out and causing excessive pressure in the transmission________________
Demographics: tell us about your truck and your ambient conditions:
- Year: _1996_____
- Truck model and class (ie: c2500) __GMC K1500 Suburban_______
- Automatic or Standard _____Auto_____
- Mileage: (indicate miles or km) _350,000 miles________
- Replaced parts and mods (IP, PMD, chip/PCM, TM, injectors etc) ___________
- Model: ‘S’ or ‘F’ engine, NA or Turbo, EGR? _____F eninge_________
- Ambient outside temp: (indicate *C or *F) _All temps_________
- What fuel are you using? (#1 Diesel, #2 Diesel, Bio, VO, WVO, etc) _All fuels____generally 11% bio____
- What fuel additives are you using? ____Schaeffer’s mostly_______
- Where are you located? 60927_____________
General maintenance: inspect and evaluate the condition of each. When were they last changed?
- Air filter ___ last oil change ______
- Fuel filter _____last oil change____
- CDR Valve? ______unknown___
- Coolant – last flushed/replaced at _______maybe 300,000______
- Oil – synthetic/regular, changed at ___Synthetic every 10,000 miles________
- Batteries – state of charge, (matched set) replaced at ____good_________
- Battery cables and grounds (removed, cleaned and tightened): ____unknown__________
- Glow Plugs - how many miles on them? __unknown_______ What type? __AC Delco 60G___________
- Injectors - last changed at ___230,000 miles___________
History: (Describe how the problem first appeared.)
- What were you doing when it happened? _______I think it has been ongoing for a while. Long enough for the chugging to take out the transmission_______
- How was the truck running before this problem appeared? ___ fine __________
- Has this problem ever happened before? __________I am guessing it has been happening since the trans went out the first time. But at 300,000 miles plus the trans could have just gone out the first time_____________
- Describe any related factors that might be part of the problem. ______________
- Have you checked for DTC (Diagnostic Trouble Codes)? (Y.N) __Y__ And? ___No results with my cheap code reader_____
[FONT="]
[/FONT] Diagnostics:
1] Starting:
1a] Does the engine start? __Yes_______
1b] Does the engine crank over? _yes_______
1c] Are your batteries fully charged? __yes_______
1d] Have you removed, cleaned, and tightened all battery connections? ________
1e] Does your Wait to Start light come on for a time? How long? normal_________
1f] Does your glow plug light come on? _________ For how long? ___normal - starts great______
1g] Do you see smoke from the exhaust while cranking? What color? ________
1h] Does the Service Engine Light Glow during Start/bulb check? ________
2] Fuel Issues (if not running):
2a] Can you hear your lift pump working? _____yes_______
2b] Do you get a steady flow of fuel from the water drain (T-handle) ? __last I checked_______
2c] Loosen the inlet line from the IP – is fuel coming out (Lift Pump on)? ___________
2d] Loosen an injector line and crank the engine - does fuel come out? _________
2e] Do you hear a vacuum (hiss) when you remove the fuel cap? ___________
3] PMD / IP Issues
3a] Location of PMD (on pump, on intake, remote mounted) ____in bumper on a heat sink_______
3b] Condition of Extension harness (if used) Vendor or Homemade? ____Vendor made in the USA_____
3c] Condition of grounds / ground wires to IP / PMD. Check Harness. _________
3d] PMD Make: ____Flight Systems_______
3e] PMD Age: ________Fairly recent_____
4] Stalling Issues
4a] Do you experience stalling only when hot? ___No stalling_________
4b] Does it stall under particular circumstances? (ie hit bump, or on accel) ______
4c] Does pouring cool water over the IP seem to help with restarting? _________
4d] Is stalling momentary (engine recovers)? _________
4e] Does SES light come on when engine hiccups? _________
4f] Does cruise control quit working when engine hiccups? ___________
4g] Does re-starting seem to reset engine, restoring cruise and power? _________
4h] Changes to dash lights or instruments during stalling events? ___________
5] Running Issues
5a] On cold start, does upper rad hose get hard before engine warms up? _____N__
5b] Any bubbles or oil film in coolant overflow tank? __ N _____
5c] Any white slime on oil surfaces (dipstick, CDR, oil Fill cap)? _______N___
5d] Excessive white smoke from exhaust on cold start? ______ ___
5e] Excessive black smoke from exhaust under hard acceleration? __________
6] Performance Issues
6a] Do you have gauges (boost, EGT) ? _______ N ____
6b] Maximum boost under load? ____________
6c] Have you added a performance PCM (reflash) or Chip? ___NO___________
6d] Have you changed exhaust / downpipe / crossover? __Don’t remember______________
6e] Wastegate – mechanical or vacuum (OEM)? ___OEM___________
List and describe any other factors which are not addressed in this checklist. We can’t see, hear, smell, or touch your truck, so the more descriptive information you can give, the more likely it is that somebody can assist you.
_________________________________
